150
REPORT No. 2067 LIST OF UNRESTRICTED NIM PUBLICATIONS ISSUED FROM 1966 TO 1980 by H.W. Glen NATIONAL INSTITUTE for METALLURGY 200 Hans Strijdom Hoad RANDBURG SOUth Africa 29th August, 1980

REPORT...and nickel, by ore-dressing techniques with special reference to mixed sulphides 76 Hydrometallurgy Development of hydrometallurgical processes for base metals, especially

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  • REPORT No. 2067

    LIST OF UNRESTRICTED NIM PUBLICATIONS ISSUED FROM 1966 TO 1980

    by

    H.W. Glen

    NATIONAL INSTITUTE

    for METALLURGY

    200 Hans Strijdom Hoad RANDBURG SOUth Africa 29th August, 1980

  • NATIONAL INSTITUTE FOR METALLURGY

    LIAISON AND INFORMATION DIVISION

    REPORT No. 2067

    LIST OF UNRESTRICTED NIM PUBLICATIONS ISSUED FROM 1966 TO 1980

    Investigator H.W. Glen

    Head of Division L.F. Haughton

    29th August, 1980

    All correspondence to the National Institute for Metallurgy, Private Bag X30I5. Ranuburg. 2125 South Afric

    ISBN 0 K69W 516 2

  • SYNOPSIS

    This publication lists the 742 unrestricted reports, 337 papers, 26 patents, and 4 other technical publications that were issued as publications of the National Institute for Metallurgy (NIM) from 1966 (the year of its inception) to 1st April, 1980. For ease of reference, these publications are also classified under research topics.

    Also included are details of the 2 periodicals issued by NIM and a list of the current miscellaneous publications of the Institute, which include the annual report, and brochures and leaflets of various kinds.

    SAMEVATTING

    Hierdie publikasie lys die 742 onbeperkte verslae, 337 referate, 26 patente en 4 ander tegniese publikasies wat sedert 1966 — die stigtingsjaar van die Nasionale Instituut vir Metallurgie (NIM) — tot 1 April 1980 as publikasies van NIM uitgegee is. Hierdie publikasies word vir maklike verwysing ook onder navorsingsonderwerpe, geklassifiseer

    Daar word ook besonderhede verstrek van die 2 blaaie wat NIM uitgee en n lys van diverse publikasies van die Instituut soos die jaarverslag en verslvillende soorte brosjures en pamflette, ingesluit.

  • PREFACE

    This report, which supersedes Report 2013. is a compilation of all the publications of the National Institute for Metallurgy (NIM) having an unrestricted distribution list. It includes all the unrestricted reports and the patents issued and registered by NIM from 1966 to 1 st April. 1980. the confidential reports that were declassified during that period, all the papers published during that period where one of the authors was, or is, a member of NIM staff, and the other technical publications that do not fall into the categories already mentioned. The total number of unrestricted reports included is 742, the patents amount to 26. the number of papers published is 337, and the other technical p. blications amount to 4.

    For ease of reference, all the reports, papers, patents, and ether technical publications listed here have been classified as far as possible into variou research topics. A list of these topics is given in Section 1. together with the numbers of the pages on which the publications are classified according to iopic.

    This report also gives details of the 2 periodicals issued by NIM and concludes with a list of NIM miscellaneous publications, which are additional to those mentioned above. These include the current annual report, together with brochures and leaflets of various kinds.

  • CONTENTS

    PREFACE

    1. COMPREHENSIVE LIST OF RESEARCH TOPICS 1

    A. NIM Research Topics 2

    B. Research on Uranium Involving NIM Staff 6

    2. LIST OF UNRESTRICTED NIM REPORTS 8

    3. PAPERS BY NIM STAFF 43

    4. NIM PATENTS 65

    5. OTHER TECHNICAL PUBLICATIONS 68

    6. CLASSIFICATION OF PUBLICATIONS ACCORDING TO RESEARCH TOPIC 69

    7. PERIODICAL PUBLICATIONS 143

    8. MISCELLANEOUS PUBLICATIONS 144

  • 1. COMPREHENSIVE UST OF RESEARCH TOPICS

    The page numbers on which the publications are arranged according to topic are given on the right-hand side of the following Hst. Where no page number is given for a topic, it means that no publications have been issued under that topic.

    l

  • NIM PUBLICATIONS

    A. NIM RESEARCH TOPICS

    No. of page

    Ferro-alloys, stainless steels, iron and steel, and related fields

    Ferro-alloys Fundamental metallurgical studies of ferro-alloy processes and the application of results to operating plants 70

    Development of new and improved processes for the major ferro-alloys (ferrochromium, ferromanganese. ferrosilicon) 73

    Instrumentation, optimization, and control of ferro-alloy processes 74

    Stainless steel Research and development of stainless-steel processes 75

    Iron and steel Research associated with conventional processes for the production of iron and steel . . . 75

    Minor ferro-alloys Research and development of processes for minor ferro-alloys 75

    Reduction

    Direct reduction processes for iron ores

    Properties of carbonaceous reducing agents with special reference to ferro-alloy processes 76

    Chromium metal and chemicals Development of processes for the production of chromium metal and chemicals

    Manganese metal Development of processes for the production of manganese metal 76

    Silicon metal

    Development of processes for the production of silicon metal

    Base metals (copper, nickel, zinc, lead, cobalt, cadmium)

    Ore-dressing Development of processes for the concentration of base metals, especially copper, zinc, lead, and nickel, by ore-dressing techniques with special reference to mixed sulphides 76

    Hydrometallurgy Development of hydrometallurgical processes for base metals, especially copper, nickel, and cobalt, including non-sulphidic raw materials 77

    Lead and zinc — refining Pyrometallurgical processes for the production and refining of lead and zinc

    Copper and nickel — pyrometallurgy Pyrometallurgical processes for the smelting and refining of copper and nickel 80

    Recovery processes Instrumentation, optimization, and control of processes for the recovery of base metals

    2

  • NIM PUBLICATIONS

    No. of page

    Zinc — hydrometallurgy Development of hydrometallurgical processes for the recovery of zinc 81

    Nickel-bearing serpentinites Processing of nickel-bearing serpentinites with special reference to their occurrence in South Africa 81

    Analysis of base-metal sulphides Development of new and improved methods for the analysis of base-metal sulphide ores, concentrates, metals, and byproducts 83

    Mineralog» of base-metal sulphides Mineralogical studies of base-metal sulphides 84

    Gold and silver

    Gold — ore-dressing Development of improved ore-dressing processes for the recovery of gold and pyrite from Witwatersrand and O.F.S. gold mines 85

    Gold — hydrometallurgy Development of improved hydrometallurgical extraction processes for gold from Witwatersrand ard O.F.S. gold mines 86

    Gold — instrumentation and control Instrumentation, optimization, and control of processes for the recovery of gold 88

    Gold — mineralogy Mineralogical and geochemical studies of gold ores 88

    Gold from refractory ores Recovery of gold from refractory ores 89

    Gold and silver — refining

    Refining processes for gold and silver 90

    Platinum-group metals and other associated metals

    PGM — refining Research and development of new processes for the recovery of platinum-group metals . 91

    Anode sludges Research and development of new processes for the treatment of anode sludges from copper refineries 92

    PGM — ore-dressing and smelting Research and development of improved ore-dressing and smelting processes for the recovery of platinum-group metals and chromite from ores, including ores of the Merensky and Chromitite Reefs 93

    PGM and gold — analysis Development of new and improved methods for the analysis of platinum-group metals and gold in ores, concentrates, mattes, and pure metals 93

    3

  • NIM PUBLICATIONS

    No. of page

    PGM — mineralogy Mineralogical studies of platinum-group metals and chromite-containing reefs in the Bushveld Complex 97

    Base minerals

    Phosphates and phosphorus Development of improved processes for the recovery of phosphates and phosphorus chemicals 98

    Fluorspar Development of improved processes for the recovery of fluorspar 98

    Aluminium Investigation of processes for the production of alumina and aluminium from local raw materials 99

    Aluminous refractories Investigation of processes for the production of aluminous refractories, with special reference to sillimanite and andalusite 100

    Magnesite Processes for the production of magnesitc and magnesium oxide 100

    Lime Processes for the production of limestone and lime

    Sodium chemicals Processes for the production of sodium chemicals (e.g., salt, soda ash) 100

    Potassium chemicals Processes for the production of potassium chemicals 101

    Asbestos Recovery «nd processing of asbestos

    Miscellaneous minerals and metals

    Pegmatite Processing of pegmatites for the recovery of niobium, tantalum, spodumene, mica, beryl, etc. 101

    llmenite, rutile, zircon Recovery of ilmenite, rutile, zircon, and other minerals from beach-sand and similar deposits 102

    Tungsten Recovery of tungsten concentrates from ores, and the development of processes for the refining of tungsten 102

    Manganese Processes for the upgrading of manganese ores and for the production of manganese dioxide ard manganese chemicals 103

    Magnesium Production and refining of magnesium metal and magnesium-metal alloys

    4

  • NIM PUBLICATIONS

    No. of page

    Zirconium (non-nuclear) Research and development for the production and use of zirconium and its alloys in non-nuclear fields 103

    Iron, titanium, vanadium Recovery of iron, titanium dioxide, and vanadium from iron ores containing titanium arJ vanadium 104

    Production and refining of titanium metal and its alloys

    Tin Recovery of tin concentrates from ores, and refining of tin 105

    Niobium and tantalum Processes for the production and refining of niobium and tantalum metal and their alloys . 105

    Rare earths Recovery and refining of the rare-earth minerals and metals

    Antimony Recovery and refining of antimony

    Silicate analysis Development of new and improved methods for the analysis of silicate-containing ores and concentrates 106

    Research and development of equipment, processes, reagents, and research techniques

    Flotation and fiocculation — physicochemical General physicochemical study of flotation and fiocculation, and the development of reagents for these processes 109

    Hydrometallurgy — physicochemical General physicochemical study of hydrometallurgy '12

    Ore-dressing Research and development of equipment for ore-dressing processes, and new concepts in ore-dressing (excluding flotation and comminution) 115

    Simulation and control Fundamental investigations of the simulation, optimization, and control of processes and computation techniques 116

    Analytical techniques Research and development of analytical techniques and methods '17

    Reference materials Preparation of international and secondary reference materials 119

    Mineralogical techniques Development of mineralogical techniques and methods 120

    Neutron-activation analysis Development of neutron-activation techniques as methods for the analysis of minerals and metals 121

    5

  • N1M PUBLICATIONS

    No. of page

    Hydrometallurgy and electrometallurgy — equipment Research and development of equipment for hydrometallurgical and electrometallurgical processes 124

    Pyrometallurgy — equipment Research and development of equipment for pyrometallurgicaJ processes 125

    Measurement and control — equipment Research and development of instruments and associated equipment for measurement and control 126

    Electrochemistry General studies of electrochemistry 127

    Flotation — modelling and control Engineering studies of the flotation process and equipment, including modelling, scale-up, optimization, and control 129

    Hydrometallurgy — reagents Development of solvent-extraction, ion-exchange, and other reagents for hydrometallurgy 139

    High-temperature processes General chemical studies of high-temperature processes

    Comminution and classification Engineering studies of comminution and of associated classification processes and equipment, including modelling, scale-up, optimization, and control 131

    Processing and properties of metals

    Selection of materials Selection of matei ials and optimization 133

    Special processing Further processing of metals with special reference to end-usage and properties that are particularly suited to local raw materials

    Miscellaneous

    Costs and commodities Miscellaneous economic, cost, and commodity studies 133

    Manpower Minerals manpower, training, and recruitment 134

    Miscellaneous Miscellaneous unallocatable topics 134

    B. RESEARCH ON URANIUM INVOLVING NIM STAFF

    The work done by the Extraction Metallurgy Division of the Atomic Energy Board with the assist of NIM staff is classified under the following headings:

    Beneficiation Beneficiation of ores for the recovery of uranium 137

  • MM PUBLICATIONS

    Noofpmge

    HydrometaUurgy Fundamental studies on the hydrome'allurgy of uranium ores 137

    Instrumentation Instrumentation for uranium plants 13S

    Determination of associated materials Methods for the determination of baddelcyite. zirconium compounds, and nuclear-grade zirconium metals 139

    Determination of trace impurities in uranium Methods for the determination oi trace impurities in uranium compounds 139

    Determination of uranium and thorium Methods for the determination of uranium and thorium 140

    Mineralogy Mineralogical studies of uranium minerals 141

    Recovery processes Processes for the recovery of uranium 142

    7

  • NIM PUBLICATIONS

    2. UST OF UNRESTRICTED NIM REPORTS

    Copies of most of these reports are available free of charge from the National Institute for Metallurgy, Private Bag X3015, Randburg, 2125 South Africa. For those reports that are out of print, photocopies can be supplied at a nominal charge.

    The report? that have become available since the previous issue of this Mst (Report 2013) are marked •.

    8

  • MM PUBLICATIONS

    No. Title Year

    2 The dissolution of gold in cyanide solutions containing copper in a

    carbonate/bicarbonate medium. Preliminary results 1966

    5 The spectrophotometry determination of trace amounts of tin 1966

    8 Mineralogy and chemical behaviour of some refractory gold ores from the Barberton

    Mountain Land 1966

    10 The determination of phosphate in silicate samples 1966

    11 Gravimetric determination of carbon dioxide in cyanide solutions 1966

    12 Exploratory tests on the concentration of tin ore from Kuils River, C.P. 1966

    14 A comparison of the effects of additions of carbonate/bicarbonate as opposed to

    additions of lime in the leaching of a Blyvooruitzicht gold ore 1966

    16 The rotating-disc system and its applications in the dissolution of gold 1966

    18 The 8th Commonwealth Mining and Metallurgical Congress — Australasia — 27th February to 15th April, 1965. Visits to various places in Australia and i .-mania 1966

    20 The determination of small amounts of gold in barren cyanide solution by atomic-absorption spectrophotometry 1966

    21 The use of heavy-medium separation for the recovery of spodumene 1966 24 Determination of gold in barren cyanide solutions by atomic-absorption

    spectrophotometry 1966

    25 Quantitative mineralogical examination of six samples of pulverized mine ores submitted by the Chemical Engineering Group, CSI R 1966

    26 Economic evaluations of the possible producion of alumina from Sasol ashes by the ammonium sulphate baking process and the ammonium fluoride and sulphuric acid leaching process 1967

    27 Spectrophotometry determination of gold in cyanide solutions after solvent extraction as the bromo-aurate complex 1966

    28 Exploratory tests on the dissolution of manganese dioxide by reaction with sulphuric

    acid and a metallic sulphide 1966

    29 The determination of selenium and tellurium in silver chloride 1966

    30 The extraction of alumina from Sasol coal ash 19o6 34 Qualitative clectron-microprobc investigation of cobalt-gadolinium intermetallic

    compounds 1966

    35 The determination of gold ores and solutions by neutron activation analysis 1966

    37 The determination of aluminium in silicate sampV, !,y complexomctric titration 1966

    38 Chemical treatment of refractory gold ores. Literature survey 1966

  • NIM PUBLICATIONS

    No. Title Year

    39 The determination of sma'l amounts of silica in zirconium ores and concentrates 1966

    40 The spectrophotometric determination of tin in silicate materials 1966

    41 Table of the isomeric states of stable nuclides 1966

    42 The redox potential of solutions of potassium ethyl xanthate 1966

    43 The effect of oxygen on the stability of solutions of potassium ethyl xanthate 1966

    44 The zero point of charge of uranium dioxide and uraninite 1966

    45 An apparatus used in the study of interactions between sulphide minerals, sulphydryl reagents and oxygen 1966

    48 The investigation of a suspected sillimanite-bearing sample 1966

    49 The spectrophotometric determination of silica in zirconium oxide 1966

    51 Exploratory tests on the recovery of diaspore from a ferruginous shale from the Gamagararand 1966

    53 Differential thermal investigation of Moore-filter residues for tiit Anglo American Research Laboratory 1966

    54 Electron-microprobe investigation of magnetite from the Bushveld Igneous Complex 1966

    63 X-ray and spectrographic analyses of seven samples of manganese ore 1966

    64 The determination of the hafnium/zirconium ratio in ammonium diuranate produced by the Bufflex Process 1966

    65 Samples of manganese dioxide for battery tests by the C SI R 1966

    66 The study of propagation modes effective in around-the-World radio-wave propagation in the 15-Mc/s to 30-Mc/s band 1966

    67 The application of silicon controlled rectifiers to instruments using half-cycle heating 19f»6

    69 Preliminary examination of ijolite from Spitzkop 1966

    76 The electron-microprobe investigation of a gold concentrate from the Louis Moore Mine 1966

    77 Concentration of fluorspar from the farm Strydfontein. Marico District. Preliminary investigation 1966

    78 X-ray investigation of four samples of manganese ore 1966

    79 Investigation into the improvement of gold recovery in the cyanidation circuit of the Louis Moore gold mine 1966

    80 The resolution of photopeaks obtained from the products of stable nuclides irradiated by neutrons 1966

    in

  • NIM PUBLICATIONS

    No. Title Year

    81 The solvent extraction of copper cyanide 1966

    82 The spectrophotometric determination of cobalt with 2-nitroso-l-naphthol 1966

    83 Qualitative X-ray exai. inatiort oi two samples of Mn0 2 ore 1966

    84 Leaching tests on the copper sulphide mineral valleriite from Palabora Mining Company — a preliminary report 1966

    85 The roasting of refractory gold ores and concentrates. Literature survey 1966

    86 The investigation of six samples of serpentinite from the Barberton area 1966

    88 Quantitative electron-microprobe investigation of the distribution of nickel in serpentinites and associated minerals and rocks from the Barberton area 1966

    89 Mineralogical examination of ijolite from Spitzkop 1966

    90 Mineralogical examination of schist sample from the Giant Reefs Mine 1966

    91 Half-cycle heating applied to an X-ray powder camera 1966

    96 The mode of occurrence of beryl in grey gneiss along the contact with the Gesie pegmatite 1966

    97 X-ray diffraction analysis of six samples of manganese ore from Graskop, eastern Transvaal 1966

    98 Qualitative X-ray analysis of manganese dioxide ore from Graskop 1966

    99 Determination of molybdenum in uranium compounds 1966

    101 Electron-microprobe identification of opaque minerals in gold ore from the Basal

    Reef, Free State Geduld Mine 1966

    102 Micas of the Noumas pegmatite 1966

    103 Techniques for the examination of inorganic compounds on an infrared spectrograph 1966 104 The infrared examination of microlite. muscovite, apatite in the presence of

    carbonate, asbestos, paragonite, and various uranium salts 1967

    105 Report on overseas visit 1966

    107 Investigations on the treatment rr refractory gold ores from the Giant Reefs Mine 1966

    108 An X-ray-diffraction method for the quantitative determination of nsutite (-y-MnO\) and cryptomelane («-MnO.,) in ores from Gopani Mine, Transvaal 1966

    109 The possibility of establishing a local cost index for the estimation of metallurgical and chemical plant 1967

    111 The X-ray investigation of a sample of upgraded material from the Graskop wad deposit 1966

    11

  • N1M PUBLICATIONS

    No. Title Year

    113 The identification, by means of the electron microprobe, of an opaque mineral from

    the Artonvilla Mine, Messina 1966

    120 Exploratory tests on the recovery of apatite and magnetite from the farm Schiel 1967

    127 Comments on the size of gold particles observed in polished sections of ore from the Giant Reefs Mine 1967

    128 Exploratory concentration test for the recovery of cassiterite from Sandspruit No. 51, Bronkhorstspruit district 1967

    129 The polarographic determination of total hexavalent uranium as uranyl fluoride in uranous fluoride 1967

    131 The spectrographic determination of titanium oxide, ferric oxide, and silica, in baddeleyite 1967

    132 Mineralogical and spectrographic investigation of a mineral concentrate from Koster, western Transvaal 1967

    133 Gold recovery by cyanidation from mill products obtained after pyrite flotation. Progress made up to 1st July, 1967 1967

    136 Determination of aluminium in silicate materials by solvent extraction and atomic-absorption spectrophotometry 1967

    137 Determination of aluminium by atomic-absorption spectrophotometry with the

    nitrous oxide and acetylene flame 1966

    138 The determination of beryllium by atomic-absorption spectrophotometry 1967

    139 A preliminary survey of gold-recovery problems arising in the production of pyrite 1967

    140 A preliminary mineralogical investigation of pyrite from the Kimbe~vy and the Main Reefs, Vogelstruisbult Gold Mine 1967

    142 Micas from the Namaqualand pegmatite area 1967

    143 A review of the investigations into the possibility of producing alumina and aluminium from South African ores 1967

    148 The recovery of gold from the Fairview dump after pretreatment with sulphurous

    acid 1967

    149 The extraction of alumina, potash, and soda from a nepheline concentrate 1967

    151 The spectrophotometric determination of minor amounts of antimony 1967

    152 The determination of beryllium by irradiation with gamma rays 1967

    153 The spectrographic determination of zirconium in uranium oxide 1967 154 The leaching of various copper minerals with dilute sodium cyanide and dilute

    solutions containing sulphuric acid and ferric ions 1967

    12

  • NIM PUBLICATIONS

    N->. Tide Year

    155 The quantitative estimation of valleriite in the presence of other copper minerals 1967

    156 Preliminary observations on the automation of the TRP method for determining uranium 1967

    157 Results of tests to obtain pure valleriite 1967

    158 Aerosol formation with a high-speed spinning surface 1967

    159 A radioactive-tracer technique for the study of flotation of valleriite 1967

    160 The determination of copper in rocks and ores by atomic-absorption spectrophotometry 1967

    161 The quantitative electron-microprobe determination of magnesium content of magnetite from Phalaborwa 1967

    162 The growth of radioactivity in uranium after separation from its daughter products 1967

    163 The fluorimetric determination of uranium 1967

    165 Gold recovery from pyrite flotation mill products by cyanidation. Progress made ufi

    to 1st May, 1967 1967

    167 The determination of thiocyanate in uranium solutions 1967

    172 The solvent extraction of copper cyanide 1967

    173 The determination of beryllium by atomic-absorption spec rophotometry 1967

    174 Determination of chloride in uranium solutions 1967

    175 Copper extraction by leaching magnetites from Palabora Mining Company 1967

    177 Compensating for flux variation in neutron-activation analysis 1967

    179 The nickel distribution in weathered serpentinites from Volspruit, Potgietersrus 1967 180 The distribution of nickel in a rock sample from Louis Moore Mine, northern

    Transvaal 1967

    190 Micas from the Namaqualand pegmatite area 1967

    193 An investigation into the use of platinum ware for silicate analysis 1967

    200 The spectrochemical analysis of silicate material by a plasma-jet source 1967

    207 The analysis of bail Icleyite by X-ray-fluorescence spectroscopy 1967

    208 Determination of fluorine in fluorspar ores by neutron-activation analysts 1967

    211 Refractory gold ores. Report on investigations into roasting of gold concentrates in the Edwards roaster of the Fairview and the New Consort reduction plants 1967

    216 The determination of minor quantities of manganese in silicate materials 1967

    13

  • NIM PUBLICATIONS

    No. Title Year

    218 Exploratory comminution and flotation tests to indicate some characteristics of valleriite 1967

    219 A review of some of the mineralogical factors influencing the flotation of pyrite 1967

    225 Test to recover tantalite-columbite from a bulk sample of tailing from the Noumas pegmatite by pneumatic tabling 1967

    232 A comparison of open-circuit and closed-circuit grinding for the control of slime formation 1967

    .33 A chemical and mineralogical study of mtcrolite from the Noumas pegmatite [available only on loan from NIM library] 1967

    236 The determination of some of the major constituents of ores and minerals by fast-neutron activation analysis 1967

    237 The mineralogy of uranium in Western Areas ores 1967

    241 Investigation of the effects of sulphydryl flotation reagents on the cyanidation of native gold 1967

    244 The determination of selenium and tellurium in silver chloride and uranium compounds 1967

    256 The determination of carbon in uranium tetrafluoride 1967

    257 The determination of uranium by the TBP method 1967

    258 Exploratory concentration tests by Warren Spring Laboratory on the use of the fluidized-bed concentrator for the recovery of spodumene 1967

    260 The electron-microprobe investigation of two samples of magnetite catalyst from Sasol 1967

    262 Preliminary gravity concentration tests for the recovery of scheelite, wolframite, and cassiterite from the tailing dump at Boksputs in the Gordonia district 1967

    264 A new detector unit for the Techtron model AA3 atomic-absorption spectrophotometer 1967

    265 The spectrophotometric determination of minor quantities of chromium in silicate materials 1967

    266 Concentration tests for the recovery of lepidolite from tailing dumps at Helicon and Rubicon Mines by electrostatic separation and flotation 1968

    268 A power-failure safety device and operational aid for the electron microprobc 1968

    269 A literature survey of the vertical distribution of gold and uranium in various auriferous reefs 1968

    272 The determination of iron, titanium, and zirconium, in baddelcyite by X-ray-fluoresccncc spectroscopy 1968

    14

  • MM PUBLICATIONS

    No.

    276

    277

    278

    281

    286

    287

    288

    289

    291

    298

    300

    302

    306

    307

    308

    312

    313

    316

    317

    321

    323

    325

    327

    Title Year

    The determination of vanadium in silicate materials by atomic-absorption

    spectrophotometry 1968

    The determination of small quantities of xanthate in cyanide solution 1968

    Gold recovery by cyanidation from mill products obtained after pyrite flotation 1968

    The determination of xanthate in cyanide solutions 1968

    A mineralogical and petrographic study of the pre-Transvaal rocks in borehole K. 1.

    Koster district, western Transvaal 1968

    A preliminary examination of kieselguhr from Witdraai. south of Postmasburg 1968

    Ramsdellite (MnO..) from the Hotazel Mine, northern Cape Province 1968

    The determination of lead in silicate materials by atomic-absorption

    spectrophotometry 1968

    Nickel minerals from Barberton, South Africa. I. herroan trevorite 1968

    The recovery of potassium from phlogopite 1968

    The mixed-collector system xanthate plus quaternary ammonium halide. A literature survey 1968 Mineralogical examination of phosphate in pyroxenite from St. Agnesfontein. north-western Transvaal 1968 The effect of preaeration on two samples of thickener underflow from the

    Venterspost Gold Mine 1968

    Preliminary examination of kyanitc-bearing material from Granvilie. Leydsdorp 1968

    A mineralogical study of gold particles in pulp residues from the Bracken Gold Mine 1968

    An investigation of the influence of alkyl trimethyl ammonium halides on the stability of potassium ethyl xanthate in aqueous solution 1968 The qualitative investigation of inclusions in free-cutting steel with the electron microprobe 1968

    The flotation of pyrite from siliceous gangue by catinnic collectors. A literature survey 1968

    Results of tests carried out at the Loraine Gold Mine during the period 5th to 7th

    February. 1968 1968

    Aeration of ore from the Lorainc Gold Mine before the addition of cyanide 1968

    The colorimetric determination of cyanide in solutions from gold cvanidation plants 1968

    Investigation for nickel and precious metals in samples from Malelane 1968

    Information theory and the design of experiments 1968

    15

  • NtM PUBLICATIONS

    No. Tide Year

    328 A mineralogical examination of iron ore from Nooitgedacht. near Airlie Station.

    eastern Transvaal 1968

    331 A literature survey of the preparation of standard rock samples 1968

    332 Collection and preparation of standard rock samples 1968 333 The hot-water leaching process for refining arsenious oxide in flue dusts from the

    Fairview Mine 1968

    340 The detection of the formation of a bulk adduct between potassium ethyl xanthate and dodecyl trimethyl ammonium bromide in aqueous solution 1968

    341 An experimental on-stream colorimetric uranium monitor and solvent-addition controller for the Purlex process 1968

    343 A mineralogical investigation of gold-bearing sulphidic ore from the Florence-Devonian Mine, Barberton 1968

    344 Nickel minerals from Barberton: II. Nimite, a nickelian chlorite 1968

    347 Concentration tests on "rich blue nobby' kyanite-bearing ore from Nkandhla. Zululand 1968

    348 The determination of gold and silver in pyrite and banket by atomic-absorption spectrophotometry 1968

    349 The separation of platinum from solution after fusion with potassium bifluoride 1968

    350 Concentration of cassiterite from two samples from Enkeldoorn. Bronkhorstspruit

    district 1968

    352 Nickel minerals from Barberton: III. Willemseite, a nickelian talc 1968

    354 The determination of trace amounts of arsenic in uranium tetrafluoride 1968 358 The determination of mercury at concentrations of parts per thousand million in

    geological samples 1968

    359 The separation and determination of calcium and magnesium in silicate material 1M68

    360 The determination of the alkali metal carbonates and hydroxides or carbonates and bicarbonates in the presence of permanganate ions 1968

    36' The spectrophotometry determination of small amounts of calcium and magnesium in glass sands and allied materials 1968

    362 The determination of cobalt in geological samples by atomic-absorption spectrophotometry 1968

    363 The determination of thorium in solid samples of baddelcyite and carbonatite ores and in the solutions resulting from leaching these ores 1968

    367 Felix Project: imperfect mixing in continuous leaching at Buffclsfontcin uranium plant 1968

    16

  • NIM PUBLICATIONS

    No. Title Year

    371 A preliminary investigation of cyanide-sulphydryl mixed-ligand complexes of

    mercuric ion 1968

    377 Examination of pulp samples, treated with cyanide, for coated gold 1968

    378 A literature survey on the manufacture of ferrochrome 1968

    379 The inhibition of the rate of cyanidation of native gold by Aeromine 3037 1968

    380 Preparation of gold ore before cyanidation 1968 385 The determination of the nature of coatings on gold particles 1968

    392 The spectrophotometric determination of small amounts of calcium and magnesium in glass sands and allied materials 1968

    414 The geochemistry >>i some uranium minerals in the Dominion Reef and Witwatersrand Systems 1968

    415 Uranium compounds in the Dominion Reefs, and their association with phosphorus compounds 1968

    416 Comminution kinetics: batch tests in small mills, and model development 1968

    417 Determination of molybdenum in uranium compounds 1968

    428 Nickel minerals from Barberton, South Africa: IV. Reevesite, a member of the hydrotalcite group 1968

    429 The determination of chromium in chromite 1968

    430 A mineralogical investigation of pyrite from the Loraine Gold Mine, Orange Free State 1968

    433 The spectrophotometry determination of microgram quantities of vanadium in

    U^O,,, UO„ and UF 4 1968

    434 The determination of titanium in uranium compounds 1968

    435 The liquid-liquid extraction of ferric thiocyanate complexes with Versatic 911 1968

    437 The bathochromic shift of 381 nm absorption peak in aqueous solutions of potassium ethyl xanthate containing dodecyltrimethyl ammonium bromide 1968

    439 The determination of free acid in the presence of hydrolysable cations 1968

    440 Separation of hafnium and zirconium oxides from uranium preliminary to the spectrographic determination of hafnium 1968

    442 'n Ondersoek na die gebruik van die Hallimondbuis vir die kwantitatiewe bestudering van flottasieverskynsels met besondere verwysing na die kondisionering van apatiet en kalsiet 1968

    443 The determination of anionic surface-active agents in dilute aqueous solution 1968

    17

  • NIM PUBLICATIONS

    No. Title Year

    445 The use of californium-252 fission neutron sources 1969

    447 Chemical beneficiation and agglomeration of low-grade chromite ores—a literature study 1969

    449 The determination of cationic surface-active agents in dilute aqueous solution 1968

    450 The spectrographs determination of alkali metals and alkaline earths in uranium oxide 1968

    451 The determination of thorium in baddeleyite and carbonatite ores and in the solutions resulting from leaching of these ores 1968

    452 The Purlex Process—a description of the pilot plant leading to the use of the process in South Africa 1969

    455 Determination of uranium by the TBP method after extraction with ethyl acetate 1968

    456 Method for the determination of vanadium in silicate materials by atomic-absorption spectrophotometry 1969

    457 The determination of rubidium and caesium in silicate materials by atomic-absorption spectrophotometry 1969

    459 Determination of tantalum in rocks and minerals by paper-partition chromatography 1969

    460 A rapid method for the determination of minor amounts cf thorium in aqueous solutions of uranyl nitrate or chloride 1969

    464 The saturation pressure of nitrogen in determinations of surface area 1969

    465 The determination of aminoid nitrogen in organic compounds by the Kjeldahl method 1969

    466 The volumetric determination of aluminium in silicate materials 1969

    470 Rapid estimation of uranium in raffinate solutions containing thorium by the pyridylazo-naphthol method 1969

    473 Mineralogical examination of tantalite-bearing samples from the Warmbad district, South West Africa 1968

    474 The IAEA Conference on thf Use of Nuclear Techniques in the Prospecting and Development of Mineral Resources 1969

    477 Balanced-temperature analysers 1969

    482 Review of work on the treatment of pegmatites 1969

    483 Summary of the mineralogical investigation of pegmatites 1969

    485 Gravimetric determination, using nitron, of nitrates in uranium compounds 1969

    486 Determination of strontium in ores by atomic-absorption and emission spectrophotometry 1969

    18

  • NIM PUBLICATIONS

    No. Tide Year

    487 The spectrophotometric determination of minor quantities of vanadium in silicate materials 1969

    489 Thermal analysis. Overseas visit 1969

    491 The determination of nickel, copper, and cobalt in a nickel alloy matte 1969

    493 Concentration of andalusite from alluvial sands from the farm Goecgelegen, Groot Marico district 1969

    494 A preliminary study of beryllium distribution in phyllosilicates from the Etiro pegmatite, Karibib, South West Africa 1969

    496 A preliminary study of beryllium distribution in quartzes from the Etiro pegmatite, Karibib, South West Africa 1969

    497 The determination of ferric iron using Tiron 1969

    498 An infrared investigation of the potassium alkyl xanthate and alkyl trimethyl ammonium bromide mixed-collector system 1969

    499 The determination of molybdenum by atomic-absorption spectrophotometry 196°

    502 The volumetric determination of chloride and bromide using mercurous perchlorate 1969

    503 Rapid estimation, by the ammonium thiocyanate method, of uranium in raffinate solutions containing thorium, lead, and copper 1969

    504 The influence of preadsorbed oleate ions on the adsorption of water vapour by insoluble ionic crystals 1969

    508 The distribution of nickel in serpentinite samples of borehole cores from the Msauli

    Mine, Barberton 1969

    510 The performance of a clarifier subject to low-intensity turbulence 1969

    511 The determination of silica in chrome ores and chrome refractories 1969

    512 The distribution of nickel in two surface samples of serpentinite 1969

    513 Gold recovery by cyanidation from mill products obtained after pyrite flotation 1969

    515 The influence of sulphydryl and cationic flotation reagents on the cyanidation of

    native gold 1969

    517 Radiotracer tests on the pachucas on the uranium plant at Western Reefs Mine 1969

    518 The prediction of gravity or inertial separation efficiencies from heavy-liquid tests

    and Tromp-type efficiency curves. An improved method 1969

    524 The determination of minor amounts of molybdenum in soil samples 1969

    526 The determination of the platinum-group metals and gold in ore samples 1969

    527 Quantitative aspects of the interaction between galena, xanthate, and oxygen at a pH value of 10 1969 19

  • NIM PUBLICATIONS

    No. Title Year

    529 The determination of uranium in the organic solvent from the Purlex Process 1969

    530 The measurement of 14MeV neutron fluxes from a neutron generator 1969

    533 Determination of the stoichiometry and stability constants of mercury(H)-cyanide-xanthate complexes. I. Low-concentration region 1969

    536 The distribution of nickel in limonite-bearing birbiri e and gossan from Vlakfontein and Groenfontein in the western Transvaal 1969

    537 Flame-photometric determination of lithium with the Techtron AA4 spectrophotometer 1969

    837 The association of gold and uranium with other minerals in different Witwatersrand reefs 1969

    845 An electron-microprobe study of the nick.l distribution in a serpentinite from

    Volspruit, Potgietersrus 1969

    847 The liquid-liquid extraction of ferric thiocyanate complexes with carboxylic acids 1969

    848 The distribution of nickel in serpentine from Lusinzi, north-eastern Transvaal 1969

    853 The determination of silicon in ferrochrome alloys 1970

    857 The volumetric determination of bismuth in metallurgical ores and concentrates 1969

    870 Determination of the stoichiometry and stability constants of mercury(ll)-cyanide-xanthate complexes. II. High-concentration region 1970

    884 Review of information on the mineral industry of Mozambique 1970

    889 The simultaneous determination, by instrumental thermal-neutron activation analysis, of some selected trace elements likely to be present in lunar material 1969

    890 The determination of the platinum-group metals and gold in ore samples — Part II 1969

    891 Calibration of the 'Universal Voltronics' power supply for the neutron generator manufactured by Accelerators Incorporated 1969

    894 The determination of thorium in silicate rocks 1969

    897 Nickel in South Africa with special reference to low-grade nickeliferous ores 1970

    898 The development of a computer programme for countercurrent operations involving liquid-solid solute separations 1970

    911 The recovery of gold from sulphidic and arsenical ores mainly from the Barberton

    area 1970

    938 Life test on IRA 400 resin during the recovery of zinc chloride 1970

    943 An electron-microprobe investigation of chiastolite crystals 1970

    950 A mineralogical study of eight samples of phosphate ore from Stcenkampskraal, Van Rhynsdorp, Cape Province 1970

    20

  • NI!M PUBLICATIONS

    No. Tate Year

    951 Colorimetric determination of minor quantities of nitrate in uranniA compounds 1970

    952 The analyse of ferrochromc slag 1970

    961 The preparation of standard solutions for the platinum-group metab and gold 1970

    964 The recovery of copper from sulphate leach liquors by liquid ion exchange with LIX-64N 1970

    965 The spectrophotometric determination of phosphate in leach residues and solutions 1970

    967 Automatic timing of the neutron-generator counting station 1970

    970 The determination, by atomic-absorption spectrophotometry, of platinum, palladium, rhodium, ruthenium, gold, silver, and lead, in prills 1970

    971 The determination of gold by atomic absorption, and of platinum, palladium, rhodium, and iridium by spectrophotometry, in solutions 1970

    975 Visit to the Tripartite Chemical Engineering Conference in Montreal 1970

    976 The determination, by atomic-absorption spectrophotometry, of gold in cupeDatinn prills and in platinum-metal concentrates 1970

    977 The collection and rapid determination of noble metals in ores and concentrates by

    the fusion technique using lcací as a collector 1970

    987 Rhythmic-activation analysis 1970

    991 The determination of thorium in solid samples and in solutions resulting from the leaching of ores 1970

    994 The separation and determination of noble metals by reversed-phasc extraction

    chromatography 1971

    996 An improved distributed-parameter model for the kinetics of mineral flotation 1970

    998 The determination of macroscopic amounts of total rare-earth oxides and thorium oxide 1970

    1003 The chromatographic separation and determination of platinum, palladium.

    rhodium, and iridium 1970

    1005 Modifications to the Intertechnique 4000-channel analyser 1970

    1010 The leaching, with hydrofluoric acid, of materials containing tantalum and niobium 1970 1012 The coordination numbers of cyanide complexes of zinc, cadmium, and mercury in

    aqueous solution 1970

    1013 The instrumental neutron-activation analysis of samples taken at diftcreni levels of the E.R.P.M. Mine 1970

    1017 The spectrophotometric determination of rhodium 1970

    21

  • N1M PUBLICATIONS

    No. Title Year

    1020 Phase relationships involving iron, chromium, silicon, and carbon, with special reference to high-carbon ferrochromium and ferrochromium-silicide alloys. A literature survey 1970

    1025 An introduction to stochastic differential equations. Abbreviated lecture notes 1971

    1026 Small-scale flotation techniques 1970

    1028 Exploratory heavy-liquid separation tesis on a low-grade apatite concentrate 1970

    1031 The dissolution of U 0 2 as an electron-transfer reaction 1970

    1037 The detennination of gold in concentrates of the platinum-group metals after

    extraction with dibutyl 'CarbitoP 1970

    1043 The determination of ruthenium in uranyl fluoride 1970

    1044 The determination of ruthenium in uranyl fluoride 1970

    1048 The determination, by neutron-activation and tracer techniques, of the losses of iridium during the fire-assay procedure for the platinum-group metals 1970

    1049 Exchange visit to the Institut fur Spektrochemie und Angewandte Spektroskopie in Dortmund, West Germany 1970

    1075 The preparation of PADAP — 2-(2-pyridylazo)-5-diethylaminophenol (zinc complex) 1970

    1076 The direct determination of acid-soluble uranium in silicate ores and in the solutions resulting from leaching these ores 1970

    1077 The determination of acid-soluble, acid-insoluble, and n I uranium in silicate ores 1970

    1078 The complexometric determination of zinc in ores and concentrates, with ion-exchange resin 1970

    1085 The optimi7^tion of the design of a countercurrent liquid-liquid-extraction plant using LIX-64N 1970

    1086 The determination, by atomic-absorption spectroscopy, of platinum, palladium, rhodium, ruthenium, and gold in the presence of base metals 1970

    1088 The determination of ferrous iron in refractory minerals 1970

    1089 The rapid volumetric determination of calcium in pregnant solutions in uranium plants 1970

    1093 The calculation of the equilibrium distribution of metal-ion complexes in multicomponent aqueous ystems 1970

    1096 The spectrophotometry determination of titanium in ores, rocks, and minerals, with diantipyrylmethane 1970

    1106 Computerization of atomic-absorption data with the Olivetti Programma 101 1970

    22

  • NIM PUBLICATIONS

    No. Title Year

    1108 Interferences relating to the determination of the noble metals by atomic-absorption

    spectrophotometry 1970

    1113 The determination cf uranium in ores and solutions by X-ray fluorescence 1970

    1114 A study of the products of reaction between galena and aqueous xanthate solutions 1970

    1125 Studies of the stability of xanthates and dixanthogen in aqueous solution, and the chemistry of iron xanthates and cobalt xanthates 1971

    1137 The determination of the platinum-group metals and gold in ore samples — Part HI 1971

    1144 Three-dimensional predominant-area and solubility diagrams for the uranyl carbonate and uranyl sulphate systems at 25 °C 1971

    1145 The use of 2-(2-pyridylazo)-5-diethylaminophenol as a spectrophotometric reagent for the determination of uranium 1970

    1153 EJE 0 diagrams. Their use in the estimation of unknown standard reduction potentials, with particular reference to the d,n electron-configuration ions 1970

    1154 The extraction and separation of niobium and tantalum by liquid-liquid extraction using tri-n-butyl phosphate 1970

    11 f

  • SIM PUBLICATIONS

    No. Title Year

    1219 Spectrographs analysis for the toble metals present in solutions 1971

    1222 The liquid-liquid extraction of zinc from zinc chloride solutions by the use of di-2-ethyl hexyl phosphoric acid 1971

    1230 The determination of copper and zinc in borehole cores with the Ekco Mineral

    Analyser 1971

    1232 The determination of osmium 1971

    1245 The separation of non-volatile noble metals by reversed-phase extraction chromatography 1971

    1247 The pelletizing of chromite fines. A preliminary investigation of the preparation of

    cold-bonded pellets 1971

    1257 Aspects of the Seventh X-ray Analytical Conference, Durham, September 1970 1971

    1260 Interference by base metals in the spectrophotometric determination of platinum

    metals 1°/1

    1267 The development of an electrodeless conductivity meter 1971

    1268 A two-stage process for the recovery of flotation concentrates from copper-zinc ores 1971

    1273 The coprecipitation of noble metals from tellurium. I. Platinum, palladium, rhodium, and gold 1971

    1281 The heavy-medium cyclone concentration plant for the treatment of andalusite sands on the farm 'Wonderfontein', Groot Marico district 1971

    1282 The determination of free hydrofluoric acid in the leach liquors from tantalum-niobium ores 1971

    1296 A review of reactions in the flotation system galena-xanthate-oxygen 1971

    1305 The determination of total sulphur in the dust from nylon thread 1971

    1308 Heavy-medium tests for the treatment of pegmatite ores and dump material in

    Namaqualand 1971

    1310 South African costs of industrial equipment for the metallurgical industry 1971

    1318 The determination, by atomic-absorption spectrophotometry, of osmium and

    iridium in solution 1971

    1319 Nickel minerals from Barberton. V. Trevorite 1971

    1322 The preparation and analysis of minerals for use as reference material. Progress

    report no. 1 ' 971

    1324 The separation of base metals from noble metals by cation exchange 1971

    1340 The cadmium-cyanide-xanthate system 1971 24

  • NIM PUBLICATIONS

    No. Tide Year

    1343 The Pyrometallurgical Research Group's current research programme on

    ferro-alloys 1971

    1351 Preliminary report on the analysis of the six NIMROCgeochemical standard samples 1972

    1356 Nickel in samples of serpentinite from Kaapsehoop, Barbertcn 1971

    1361 An electron-microprobe analysis of gold in the Witwatersrand banket and in ores

    from the Barberton Mountain Land 1971

    • 1364 Thiourea anion-exchange resins for the recovery of platinum-group metals and gold 1971

    1365 Studies of incipient fusion in the system chromite-MgO-Al-.03-Si02-C 1972 1366 Liquidus temperatures, viscosities, and electrical conductivities of lime-containing

    slags produced during the smelting of high-carbon ferrochromium and ferrochromium-silicide ailoys 1971

    1371 Concentration of noble metals by a fire-assay technique using nickel sulphide as the collector 1971

    1372 The electrical double-layer properties of kimberlite suspensions 1971

    1374 Rotation tests on copper-zinc ore from Letaba district 1°71

    1380 An electrochemical model for the leaching of uranium dioxide 1972

    1384 Flotation tests on samples of Canadian copper-zinc ores 1971

    1388 Flotation tests on samples of copper-zinc ores from Finland 1971

    1394 The determination of ferrous iron in chromites and chromium ores 1972

    1398 The peptization of chromite fines. Preparation of pellets bonded with bentonite and indurated by heat treatment 1971

    1401 The pressure dissolution of platiniferous materials by the sealed-tube technique [superseded by Report 1852] 1972

    1402 A study of mineral-surface properties by the use of gas-adsorption measurement 1972

    1403 The coagulation and flocculation of suspensions of kimberlite 1972

    1408 The determination of molybdenum in the solids and solutions resulting from the processing of Witwatersrand uranium ores 1972

    1414 The use of a closed recirculation apparatus in the study of the galena-oxygen-xanthate system 1972

    1415 The interrelation of the chemical, physical, and certain metallurgical properties of chrome spinels from the Bushvetd Igneous Complex 1972

    1423 The effects of chromium oxide, iron oxide, and calcium oxide on the liquidus temperatures, viscosities, and electrical conductivities of slags in the system MgO-AI2Or-Si02 197?

    25

  • NIM PUBLICATIONS

    No. Title Ytar 1424 A review of the World's fluorspar industry, with particular reference to South Africa 1972

    1425 The effect of the reactivity of lime on desulphurization efficiency in the basic oxygen furnace 1972

    1427 The pressed-fused disc — a technique for the preparation of ore samples to be analysed for uranium by X-ray fluorescence 1972

    1428 The separation and determination of trace and minor amounts of individual rare earths in silicates 1972

    1430 The use of the Ekco Mineral Analyser for the determination of copper and zinc in the presence of iron 1972

    1432 The determination of ruthenium and osmium in the residues resulting from the leaching of mattes 1972

    1435 The determination of chromium, manganese, iron, cobalt, and nickel by atomic-absorption spectrophotometry using the nitrous oxide-acetylene flame 1972

    1436 A computer programme for the simulation of the performance of a flotation plant. Revised report 1973

    1438 A mineralogical examination of fluorspar ores from the Ottoshoop area 1972

    1439 The reaction of sulphide minerals with thiol compounds 1972

    1443 Gravity concentiation tests on four samples from Tantalite Valley, S.W.A. 1972

    1445 Cost assessments for the production of andalusite concentrates 1972

    1447 A preliminary electrochemical investigation of the galena-xanthate-oxygen system in aqueous solution 1972

    1448 A potentiostatic study of the anodic dissolution of uranium dioxide in aqueous solutions 1972

    1454 A dynamic model for the extraction bank of Purlex plants 1972

    1457 Phase equilibria in the Cr-Fe-Si-C system in the composition range representative of high-carbon ferrochromium alloys produced in South Africa 1972

    1458 Liquidus temperatures in the Cr-Fe-Si system in the composition range representative of ferrochromium-silicide alloys produced in South Africa 1972

    1463 Liquidus temperatures - d activities of manganese(ll) oxide in slags associated with the production of high-carbon ferromanganese alloys 1972

    1467 The spectral analysis of solutions. I. The analysis of rare-earth minerals 1972

    1476 A magnetic-tape-oriented system for data reduction in neutron-activation analysis 1972

    1477 The control of Purlex plants 1972

    1478 An examination of two andalusite-bearing samples from Magostad No. 6, Marico district, western Transvaal 1972

    26

  • NIM PUBLICATIONS

    No. Title Year

    1479 Infrared studies of the adsorption of oleate species on mineral surfaces, with special reference to fluorite 1972

    1482 Reactions occurring during the smelting of high-carbon ferrochromium from Transvaal chromite ores 1973

    1483 The South African manpower requirements in extractive metallurgy 1972

    1484 Cost estimates for the production of copper wirebars from sulphidic ores 1972

    1486 Review of the fluorochemical industry of the World 1972

    1488 Extraction of rutile from Highveld smelter slags 1972

    1489 The breakage of Soderberg electrodes 1972

    1490 The adsorption of krypton, nitrogen, and water vapour on sodium oleate 1972

    1491 Technology and economics of the Gaus kiln under South African conditions 1972

    1495 A method for the determination of elemental sulphur on the surface of sulphide minerals 1972

    1499 The production of medium-carbon ferrochromium 1972

    1500 The chromatographic separation and determination of noble metals in matte-leach residues 1973

    1503 Fast-neutron-activation analysis for the determination of oxygen in rock samples 1973

    1505 The production of the refractory aluminium silicates, with special reference to South Africa 1973

    1508 The selection of economically mineralized pegmatites according to their border-zone characteristics 1973

    1509 The instrumentation developed for electrochemical studies of the leaching of uranium oxide 1973

    1513 The upgrading of chromite ore from Moreesburg 1973

    1514 The determination by X-ray-fluorescence spectrometry of minor amounts of niobium and tantalum in geological materials 1973

    1515 A mineralogical investigation of titaniferous magnetite from the Mambula Intrusion,

    Natal 1973

    1517 Computer-controlled flotation plants in Canada and Finland 1973

    1521 The dissipation of electrical power in the burden of a submerged-arc furnace 1973 1522 An electron-microprobe investigation of an exsolved mineral in a sample of

    magnetite 1973

    1526 Heat of solution as a control of aqueous-ammonia concentration 1973

    27

  • N1M PUBLICATIONS

    No. Title Year 1527 The physicochemical properties of slags associated with the smelting of nickel

    sulphide concentrates 1973

    1529 South African costs of equipment for the metallurgical industry (1972) 1973

    1530 AUREOL — an X-ray-absorption analyser for the determination of the uranium on loaded resin in ion-exchange plants 1973

    1533 Fields of application for dispersive and non-dispersive X-ray-fluorescence instruments 1973

    1534 The determination, by atomic-absorption spectrophotometry, of noble metals in the presence of sodium, barium, or sulphate ions. A comparison of uranium and lanthanum as releasing agents 1973

    1541 Further tests on beach sands from Bantu Area No. 4, Nhlabane, Zululand 1973

    1544 The recovery of salable ferrochromium from material discarded by Ferrometals Limited 1973

    1545 A mineral ogical investigation of leach residues from the Blyvooruitzicht Gold Mine 1973

    1546 Pilot-plant smelting campaign on iron ores from Tete 1973

    1547 Physicochemical and thermodynamic properties of slags in the system MgO-AIO,.,-Si02 1973

    1548 Physicochemical properties of slags in the system MgO-Al20:,-Si02 and their application to the technology of ferro-alloy smelting 1973

    1549 Thermodynamic and related physicochemical factors pertaining to the production of ferromanganese. A literature survey 1973

    1550 A fundamental study of the dissolution in acid solutions of uranium minerals from South African ores 1973

    1552 The preparation and analysis of minerals for use as reference material. Progress report no. 2 1973

    1553 Characterization of the flotation properties of fluorspar from small-scale batch and pilot-plant tests 1973

    1555 The analysis, by atomic-absorption spectrophotometry, of matte-leach residues 1973

    1556 The spectral analysis of solutions. 2. The analysis of leach liquors, concentrates, slags,

    and residues 1973

    1557 Cost estimates for the production of pig iron in the Tete district of Mocambique 1973

    1559 A cost assessment of the production of elemental sulphur by chlorination roasting 1973

    1562 Application of a flotation model to an industrial plant 1973

    1563 Neutron-activation analysis of samples from the Kimberley Reef conglomerate 1973 1565 A mineralogical investigation of the vanadium-rich titaniferous iron ore from Tete,

    and the slag produced from it 1971

    28

  • NIM PUBLICATIONS

    No. Tide Year

    1566 Comparative tests on coke, char, and anthracite 1973

    1567 Estimation of the parameters in the distributed-constant flotation model 1974

    1568 A computer programme for the estimation of parameters in flotation 1973

    1569 The use of DDTU as an analytical reagent for the noble metals 1973

    157] The commissioning of a direct-reading spectrometer for the analysis of silicate rocks by the use of the graphite-pellet technique 1973

    1573 A pilot-plant investigation of a flotation model 1974

    1574 The chromatographic separation and gravimetric determination of noble metals in matte-leach residues 1973

    1575 The recovery of zinc from pickle liquors by ion exchange 1973

    1577 Quantitative analysis of fluorite ores by X-ray diffraction 1973

    1579 The determination of tin in geochemical-survey samples 1973

    1580 The determination of silver in ores, concentrates, and mattes 1973

    1581 The computer calculation, from fundamental parameters, of influence coefficients

    for X-ray spectrometry 1974

    1582 The construction and testing of a precision calorimeter 1973

    1583 Preliminary tests on winnowing for the recovery of mica 1973

    1587 A preliminary investigation of the flotation of copper-activated sphalerite without the use of collectors 1973

    1589 Preliminary investigations into the flotation of tin dioxide, cassiterite, and some related gangue minerals 1973

    1590 The separation of osmium from ruthenium in hydrochloric acid solutions 1974

    1591 The inductive measurement of conductivity in slags 1974

    1592 The determination of line intensities in the presence of interfering spectra in dispersive X-ray-fluorescence spectrometry 1974

    1595 Preliminary tests on low-grade breccia ted fluorspar ore from the Ottoshoop district 1973

    1597 The role of sulphur in the flotation of sulphide minerals 1974

    1598 The use of carbon-rod devices in the determination of noble metals by atomic-absorption spectrophotometry 1974

    1599 The analysis of silicate rocks and metallurgical slags by X-ray-fluorescence spectrometry 1974

    1600 Dilute-acid leaching of slag from Tete ore 1973

    29

  • NIM PUBLICATIONS

    No. Title Year 1602 The roasting of Tete slag for the extraction of vanadium 1973

    1606 The electrical-resistance characteristics of the charge in the electric reduction furnace 1974

    1607 The analysis of ion-exchange resins by X-ray fluorescence 1974

    1609 An interlaboratory analysis of two ferrochromium slags 1974

    1611 The X-ray-fluorescence determination of percentage concentrations of niobium and tantalum in ores and minerals 1974

    1612 Flotation tests on sulphide-bearing high-grade brecciated and wad ores 1974

    1613 The deactivation of copper-activated sphalerite with cyanide 1974

    1614 The extraction of rutile from smeher slags 1974

    1615 Fluorspar pellets. A survey of the World market and an assessment of future South African production 1974

    1617 An electronic differential precision thermometer 1974

    1619 Reduction of the chromium in ilmenite concentrates 1974

    1620 The recovery of titanium dioxide from Tete slag by the sulphate route 1974

    1621 Correction for matrix effects in the analysis of solutic.is by X-ray-fluorescence spectrometry 1974

    1622 The electrical conductivity of the charge in a ferrosilicon furnace 1974

    1625 The determination of uranium and thorium by the use of delayed neutrons 1974

    1626 Formation constants of zinc chlorocomplexes in perchlorate medium 1974

    1628 The recovery of non-ferrous metals from a secondary blast-furnace slag 1974

    1629 The thermodynamics of the formation of complexes of silver with some substituted pyridines 1974

    1630 An electrochemical investigation of the dissolution of copper, nickel, and copper-nickel alloys in ammonium carbonate solutions 1974

    1632 A mineralogical examination of beach-sand concentrates from a pilot plant at

    Richards Bay 1974

    1635 Magnetic separation tests on Tete slag and ore 1974

    1636 Trace elements in diamonds from the Premier, Finsch, and Jagersfontein Mines, and their petrogenetic significance 1975

    1638 The determination of trace elements in natural diamonds by instrumental neutron-activation analysis 1975

    1639 The determination, by 14MeV neutron-activation analysis, of small amounts of oxygen and silicon in diamond 1974

    30

  • NIM PUBLICATIONS

    No. Title Year

    1640 A semi-automatic titrimeter for cyanide analysis 1974

    1643 Further tests on low-grade breccia ted fluorspar ore from the Ottoshoop district 1974

    1644 Prospects for the recovery of minerals from the sea 1974

    1646 Examination of the methods of analysis for calcium fluoride in fluorspar 1974

    1647 The industrial application of KEGOLD electrodes 1974

    1649 The establishment of preferred values for a series of fluorspar samples 1974

    1650 The production of medium-carbon ferrochromium alloys by solid-state reduction 1974

    1652 The identification of diamonds from Premier, Finsch, and Jagersfontein Mines, by

    statistical analysis of data obtained from instrumental neutron-activation analysis 1975

    1654 The determination of osmium in platiniferous media 1975

    1656 The analysis of geological samples for trace elements by direct-reading emission

    spectrometry 1974

    1660 An economic assessment of the production of high-grade fluorspar pellets 1974

    1664 The smelting of copper-nickel concentrates in an electric furnace 1974 1665 The determination of minor amounts of antimony in ores and concentrates by

    atomic-absorption spectrophotometry 1974

    1668 An updated summary of the World's fluorspar industry 1974

    1669 An assessment of the carbon-rod atomizer for the determination of silver 1974

    1670 Neutron-activation analysis of routine mineral-processing samples 1974

    1671 Pyrometallurgiba! retreatment of a slag for the recovery of vanadium 1974

    1679 The detection of noble-metal impurities in refined noble-metal solutions by thin-layer chromatography 1974

    1681 The determination of sulphur and phosphorus in chromite 1975

    1684 The application of three-phase liquid-liquid extraction to the separation and concentration of noble metals 1974

    1685 The METSEP process for the separation and recovery of zinc, iron, and hydrochloric acid from spent pickle liquors 1974

    1687 The viscosities and electrical conductivities of slags associated with the production of high-carbon ferromanganese alloys 1975

    1688 The analysis of nickel-refining solutions: separation of trace elements by liquid-liquid extraction followed by atomic-absorption measurement 1974

    1689 The determination, by atomic-absorption spectrophotometry, of arsenic, selenium, tellurium, antimony, and bismuth on ion-exchange resins 1975

    .11

  • MM PUBLICATIONS

    No. Tide Year

    1691 The determination of zirconium and aluminium by 14 MeV neutron-activation analysis 1975

    1693 Research at the National Institute for Metallurgy on the engineering aspects of copper electrowinning 1975

    1696 The preparation and certification of a reference sample of a precious metal ore 1975

    1697 A petrographic and mineralogical investigation of silica samples from the farm Elandskraal 470 JO, Rustenburg district 1975

    1698 Measurement of the electrical resistance of ferrochromium furnace charges 1975

    1703 The geochemistry of some selected South African kimberlites and associated heavy minerals 1976

    1705 The effects of various matrix elements on the efficiency of the fire-assay procedure using nickel sulphide as the collector 1975

    1706 Concentration of magnesite from Apiesbomen, Burgersfort district 1975

    1707 The work of the Pyrometallurgy Research Group at the University of the Witwatersrand 1975

    1708 An examination of the suitability of various reducing agents for the production of ferrochromium 197 5

    1709 The mineralogy, chemistry, and certain aspects of reactivity of chromitite from the Bushveld Igneous Complex 1975

    1710 The recovery of scheelite from Shongona, north-western Transvaal 1975

    1711 The oxidation of aqueous solutions of ferrous sulphate in a bubble column 1975

    1712 The thermodynamics of the formation of chlorocomplexes of nickel and copper(ll) in perchlorate medium 1975

    1714 The efficiency of the fire-assay procedure with nickel sulphide as the collector in the determination of platinum, silver, gold, and iridium 1975

    1715 Flotation tests on various types of ore from the Ottoshoop district 1975

    1717 The use of isothioronium compounds as liquid-liquid extractants 1975

    1718 The determination of silver in lead, copper, and zinc concentrates by instrumental neutron-activation analysis 1975

    1719 An evaluation of the X-ray-fluorescence analysis of rocks and silicates under routine conditions 1975

    1720 The initial development of processes for the direct leaching of iron-nickel-copper mattes containing platinum-group metals, and for the production of ferronickel 1975

    1721 A preliminary investigation into the mechanism of depression in the flotation of sulphide minerals 1975

    32

  • NIM PUBLICATIONS

    No. Title Year

    1722 The determination of small amounts of fluoride in uranium compounds by use of an ion-selective electrode 1975

    1723 The determination of zirconium and aluminium in zirconium-aluminium alloys 1975

    1724 The preparation and reduction of chromite pellets containing a reducing agent 1975

    1725 The determination of silica in fluorspar by 14MeV neutron-activation analysis 1975

    1726 Mertieite and an unnamed compound of palladium with arsenic and tin in a mineral intergrowth from the Atok Mine 1975

    1730 The chromitite from the Marico occurrence, western Transvaal, its alteration, and possible reasons for its refractory nature 1975

    1732 A mineralogical examination of eight nickel-bearing rocks from the Grasvally Chromite Mine 1975

    1733 A mineralogical investigation of weathered carbonatite from Salpeterkop 1975

    1736 The determination, by atomic-absorption spectrophotometry and liquid-liquid

    extraction, of antimony (parts per million) in ores and concentrates 1975

    1739 The determination of trace amounts of noble metals in sulphate media 1975

    1741 South African costs of equipment for the metallurgical industry (1975) 1975 1742 The determination of tin in ores, residues, and concentrates by X-ray-fluorescence

    spectrometry 1975

    1744 The refining of the platinum-group metals 1975

    1746 The determination, by atomic-absorption spectrophotometry, of minor elements in zinc. lead, and copper sulphide concentrates 1975

    1747 Magnetohydrostatic separation of gold from gravity concentrates 1975

    1749 Epithermal-neutron-activation analysis for uranium in Barberton and Bushveld granites 1975

    1750 A review of the present and future development of sulphur production in South

    Africa 1975

    1753 Full-scale flotation-plant data for modelling purposes 1975

    1754 A new three-dimensional anodic electrode for reduced power consumption during the electrowinning of metals 1975

    1761 The determination, by atomic-absorption spectrophotometry, of minor elements in anode sludges and residues 1975

    1762 The determination, by instrumental neutron-activation analysis, of some elements in the NIMROC standard reference materials 1975

    1764 Correlations of the free-energy and enthalpy changes of the

  • NIM PUBLICATIONS

    No. Title Year

    1768 Some developments in gold extraction from Witwatersrand ores 1975

    1769 An evaluation of the low-pressure ammonia-ammonium sulphate system for the leaching of local base-metal sulphides 19"*6

    1770 The spectrophott metric determination of vanadium in chromium-bearing materiak 1975

    1771 The determination of silver, selenium, tellurium, antimony, tin, lead, and arsenic in

    anode sludges 1975

    1772 A study of copper recovery by the lime-roast leach process 1975

    1776 The extraction of copper from copper-nickel catholyte by cation exchange 1975

    1777 Ferro-alloys in Brazil 1976 1778 An apparatus for the automatic measurement of current efficiencies during the

    electrodeposition of nickel in chloride media 1976

    1779 A summary of work done on the concentration of andalusite from deposits in the western Transvaal 1976

    1781 The determination, by ion-selective electrode, of fluoride in complex materials 1976

    1782 The application of air-sparging techniques to industrial electrodeposition of zinc from acidic zinc sulphate solutions 1976

    1783 The spectrographs determination of minor and trace elements in copper, lead, and zinc concentrates 1976

    1784 A single-standard calibration method for use in analysis by X-ray-fluorescence spectrometry 1976

    1785 Some thermodynamic aspects of systems relevant to the flotation of sphalerite 1976

    1787 The determination, by atomic-absorption spectrophotometry, of trace elements in sulphide concentrates 1976

    1788 A computer programme for emission-spectrographic calculations 1976

    1790 The rapid determination of manganese, vanadium, and aluminium by instrumental neutron-activation analysis 1976

    1791 A motivation for a pyrometallurgical pilot plant 1976

    1792 The determination, by instrumental neutron-activation analysis, of some trace elements in sulphide ores and concentrates 1976

    1793 The kinetics of mechanism of solvent extraction of copper by LIX 64N and KELEX 100 1976

    1794 The application of three-phase liquid-liquid extraction to the analysis of bismuth and tellurium in sulphide concentrates 1976

    1795 The determination of minor and trace elements in the leach liquors from anode sludges 1976

    .14

  • SIM PUBLICATIONS

    No. TO*

    1796 The mechanism of the eiectrodeposition and dissolution of nickd from chloride media I 976

    1797 A rapid atomic-absorption method for the determination of silver in sulphide ores and concentrates 1976

    1798 Interferences in the deteraiiitttam. by atomic-absorption spectrophotometry, of copper, lead, and zinc in sulphide concentrates 1976

    1799 An electrochemical investigation of copper cementation on iron 1976

    1800 An electrochemical investigation of the dissolution and passivation of platinum in acid solutions 1976

    1803 The preparation and analysis «if minerals for use as reference material. Progress

    report no. 3. 1976

    1804 The eiectrodeposition of nickel from ammoniacal solutions 1976

    1807 The establishment of preferred values for a scries of rare-earth samples 1976

    1808 Spectrophotometry determination (with pyrocatcchol violet as chromogenk agent) of aluminium in zirconium metals and in the residues from anode sludges 1976

    1809 The analysis, by flamclcss atomic absorption spectrophotometry, of pure selenium and tellurium 1976

    1812 List of unrestricted NIM reports and papers published during the first decade of NIMs existence (1966 to 1975) [superseded by Report 1894] 1976

    1813 The economic potential of some pegmatites from the Kcnhardt area in relation to the trace-clement content of their border zones 1976

    1814 An updated summary of the World's fluoroar industry. 1975 1976

    1815 The commissioning of an induction-coupled plasma system and its application to the analysis of copper, lead, and zinc concentrates 1976

    1817 The rapid determination by X -ray-fluorescence spectrometry of tungsten in tungsten

    ores and concentrates 1976

    1818 A microprocessor-based system to control the feed to a ferro-alloy fumacc 1976

    1820 The thermodynamics of the formation of chlorocomplcxcs of iron(lll). coba!tdl>.

    ironilh. manganese*ID. and coppcrdh in pcrchloratc medium 1976

    1822 Stability constants and linear free-energy relations for the platinum-group metals 1976

    1823 The recovery of gold and pyritc from a residue dump at Crown Mines 1976

    1825 The full automation of a Philips 1220 X-ray spectrometer 1976

    1826 Dithiocnrbamatc as a releasing agent in the atomic-absorption determination ol noble met;ils in organic mediii 1976

    i<

  • NIM PUBLICATIONS

    No. Title Year

    1828 -y-picoline adducts of the nickel, copper, and zinc chelates of 2-thenoyltrifluoroacetone 1976

    1829 An investigation of weathered carbonatite from Salpeterkop 1976

    1830 The determination of iron in zircon beach sands and its leachability 1977

    1833 Effective thermal conductivities of packed beds of chromite ores 1976

    1834 The analysis of slag and silicate samples with a fully automatic sequential X-ray spectrometer 1976

    1836 The analysis of pilot-plant products for copper, zinc, and lead wi'h the Telsec Lab-X-250 Analyser 1977

    1837 The rapid and precise determination of noble metals in matte-leach residues bv atomic-absorption spectrophotometry 1976

    1838 An investigation of the atomic-absorption spectrophotometric measurement of the elements that form gaseous hydrides and their determination in metal sulphide concentrates 1976

    1839 A valence-bond study of dialkalis and alkali hydrides 1977

    1840 The spectrophotometric determination of total uranium in silicate ores and leach

    liquors by use of bromo-PADAP 1976

    1841 The determination of acid-soluble uranium in silicate ores and solutions 1976

    1843 The treatment of Athlone Sewerage-plant effluent by the DESAL process 1976

    1845 The composition and mode of occurrence of gold in Witwatersrand ores and leach residues 1976

    1847 A pilot-plant investigation of a kinetic model for flotation 1976 1852 A revised method for the dissolution of platiniferous materials by the sealed-tube

    technique [supersedes Report 1401] 1976

    1853 Chloromethylation of polystyrene resins 1977

    1854 The interaction of pyrite, oxygen, and xanthate 1977

    1856 A study of model systems in anion exchange 1977

    1857 The determination of some trace elements in sulphide concentrate by spectrophotometry 1977

    1858 The kinetics and mechanism of the non-oxidative dissolution of some iron sulphides in aqueous acidic solutions 1976

    1859 Increased current efficiency during electrodeposition of manganese from sulphate electrolytes 1976

    1860 /% preliminary investigation of materials of construction for ore hoppers 1976

    36

  • M M PUBLICATIONS

    No. Title Year

    1861 The determination of some impurities in zirconium metal by instrumental neutron-activation analysis 1976

    1864 The preparation of primary standard solutions for each of the noble metals 1977

    1865 A sensitive method for the measurement of osmium by atomic-absorption spectrophotometry 1977

    1867 N1M decennial review (1966 to 1976) 1977

    1868 The reduction of fluxed and non-fluxed manganese ores by ferromanganese silicide 1977

    1869 The separation and determination of trace elements in iron ore 1977

    1871 Batch and pilot-plant flotation tests on copper-nickel ore from the Uitkomst ore-body 1976

    1872 The determination of mercury by cold-vapour atomic-absorption spectrophotometry 1977

    1873 The rapid reduction of gamma-ray spectra with a desk-top calculator 1977

    1874 Activation analysis and classification to source of samples from the Kimberley Reef conglomerates 1977

    1875 The determination of tungsten and iron in ferrotungsten alloys by X-Tay-fluorescence spectrometry 1977

    1876 The determination, by ultrasonic measurement, of the mud level in a thickener and

    the resin level in an ton-exchange column 1977

    1878 The electrochemical dissolution of galena in aqueous solutions 1977

    1879 Alkalis in the iron blast furnace 1977

    1880 The electrochemical reduction of silver chloride and its application to the refining of silver 1977

    1881 n-octylaniline, a new treatment for noble metals 1977

    1883 The determination of iron, chromium, titanium, and tungsten in ores and other materials, by X-ray-fluorescence spectrometry 1977

    1884 The use of capacitance probes for the determination of interfaces 1977

    1885 A data-logging system for a submerged-arc ferro-alloy furnace 1977

    1886 A rapid method for the determination of fluoride in geological samples 1977

    1888 The Imperial Smelting Process and its ap^ ication to the smelting of complex zinc-lead-copper ores 1977

    1889 Entropy relations in the formation of complexes of silver(l), mercury(H), and cadmium(li) with monodentate ligands 1977

    37

  • NIM PUBLICATIONS

    No. Title Year

    1894 List of unrestricted NIM publications issued from 1966 to 1977 [superseded by Report 1970] 1977

    1895 A review of applications of plasma technology with particular reference to ferro-alloy production 1977

    1896 The interaction of chalcocite. oxygen, and xanthates 1977

    1897 A study of aggregation in the organic phase of solvent-extraction systems and its influence on the extraction process 1977

    1898 Batch and pilot-plant tests on Merensky Reef ore from the Western Platinum Mine 1977

    1899 The production of stainless steel in South Africa 1977

    1902 The determination of boron in aluminium of high purity 1977

    1904 Separation of rare earths from solutions of phosphoric acid 1977

    1905 An examination of fire-assay techniques as applied to chromite-bearing materials 1977

    Í 906 An automated instru "it for measuring the effects of impurities on cathodic-current efficiency during the electrowinning of zinc 1977

    1907 The application of the induction-coupled plasma system to spectral analysis 1977

    1908 An analysis of the replies to a questionnaire on materials of construction for ore hoppers 1977

    1911 Methods for the analysis of zinc-bearing materials, electrolytes, and process solutions 1977

    1912 The determination, by X-ray-fluorescence spectrometry, of noble and base metals in matte-leach residues 1977

    1913 The mechanism and rate of reduction of Mamatwan manganese-ore fines by carbon 1977

    1914 The thermodynamics of the formation of sulphate complexes of iron(iii), cobalt(li). iron(ll), manganese(ii), and copper(ll) in perchlorate medium 1977

    1917 The instrumental neutron-activation analysis of granites from the Bushveld Complex 1978

    1919 The determination, by X-ray-fluorescence spectrometry, of gold in activated charcoal 1977

    1920 A mineralogical investigation of Mamatwan and Wessels manganese ores 1977

    1924 The composition of chromite grains from various Witwatersrand reefs 1977

    1926 The analysis of anode sludges by X-ray-fluorescence spectrometry 1978

    1928 A liquid-nitrogen monitor for lithium-drifted germanium detectors 1977

    1931 The equilibrium between the slag and the metal in the production of low-carl.on ferromanganese 1977

    3X

  • MM PUBLICATIONS

    No. Tale Year

    1932 A basic computer programme for the evaluation of intensity data from the Telsec Lab-X-250 Analyser 1978

    1933 The determination of trace elements by thin-film X-ray-fluorescence spectrometry. and its application to zirconium 1977

    1934 The spectrometric analysis of chromium-bearing materials with particular reference to ferrochromium slags and chromite ores 1977

    1935 The construction and testing of a small mixer-settler for use in the laboratory 1977

    1936 The analysis of mineralogical and metallurgical materials. A guide to the analytical techniques and instrumentation available at the National Institute for Metallurgy 1978

    1939 An industrial microprocessor system 1978

    1940 The extraction of the noble metals with n-octylaniline, and its application to the analysis of platinum-bearing materials 1978

    •1941 The recovery of chromite and platinum from the UG-2 Upper Chromitite Layer of the Bushveld Complex at the Pandora Mine 1978

    1942 The accuracy of assays for platinum-group metals and gold on flotation tailings of platinum ores from the Merensky Reef 1977

    1943 A review of the literature on the separation and determination of rare-earth elements 1978

    1945 Analyses of the NIMROC reference samples for minor and trace elements 1978

    1947 The cation- and anion-exchange behaviour of various base-metal chlorides in polar organic solvents 1978

    1948 The measurement of trace amounts of gold in solution by atomic-absorption spectrophotometry and carbon-rod atomization 1978

    1949 The kinetics of the leaching of zinc sulphide concentrates in acidic solutions containing ferric sulphate 1978

    1950 Faciors affecting the carbon contents of alloys formed during the prereduction of chromite ores 1978

    IS.'I Potentialities and limitations of four-parameter equations for the correlation of

    formation constants of metal-ion complexes in aqueous solution 1978

    1952 The effect of slag composition on topper losses to silica-saturated iron silicate slags 1978

    1953 A fundamental investigation into the depression of copper-activated sphalerite 1978 1956 An improved ion-exchange separation of rare-earth elements for spectrographs

    analysis 1978

    1957 Solid-state reduction, by graphite and carbon monoxide, of chromite from the Bushveld Complex 1978

    .19

  • MM PUBLICATIONS

    So. Title Year

    1959 The slag-metal equilibrium and the activities of slag and metal components in the production of high-carbon ferromanganese 1978

    1960 The recovery of ferrochromium furnace slags and related products 1976

    1962 Supergene alteration of sulphide ores. I. Literature survey, measurement, and effect on floatability and leachability 1978

    1963 An evaluation of the methods used at the National Institute for Metallurgy for the analysis of base-metal sulphide concentrates 1978

    1964 The separation, by anion exchange, of noble metals on substituted cellulose 1978

    1965 Analyses, by several laboratories, of three ferromanganese slags 1978

    • 1966 A mineralogicai investigation of ores from the Merensky Reef and their flotation products 1978

    1967 The movement of the burden in submerged-arc furnaces for the production of high-carbon ferromanganese 1978

    1968 The influence of cabonaceous reducing agents on the rate of reduction of representative manganese and chromium ores 1978

    1969 The interaction of silicon monoxide gas with carbonaceous reducing agents 1978

    1970 List of unrestricted NIM publications issued from 1966 to 1978 [superseded by Report 2013] 1978

    • 1971 The effect of open- and closed-circuit operation in the copper-cleaning flo:ation circuit of a complex sulphide ore 1978

    1972 The preparation and certification of a reference sample of high-carbon

    ferrochromium 1978

    1975 Reactions in the production of high-carbon ferromanganese from Mamatwan ore 1978

    1976 The preparation and certification of two samples of chromium ore 1978

    1977 The preparation and certification of a reference sample of hematite ore 1978

    1978 The preparation and certification of a reference sample of magnetite ore 1978

    1982 The resistivity of mixtures of Mamatwan manganese ore and reducing agents I97S

    1984 The commissioning of the AF-I MS702 mass spectrometer 1978 1985 The determination of boron in high-purity aluminium metal by spark-source mass

    spectrometry 1978

    1988 The effect of particles on !he stability of flotation froths 1978

    1991 The determination, by atomic-absorption spectrophotometry, of europium in phosphoric acid and in rare-earth oxides 1978

    40

  • NIM PUBLICATIONS

    No. Title Year

    1992 The use of optical emission spectrometry for the determination of impurities in

    metals 1979

    1996 The extraction of gold from chloride solutions 1978

    1997 A laboratory investigation of reducing agents for use in the electric-smelting industry 1979

    1998 Electrode r