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MINERAL BENEFICIATION & VALUE ADDITION
IDENTIFIED BY GOVERNMENT UNDERZIMBABWE AGENDA FOR SOCIO-ECONOMIC TRANSFORMATION (ZIMASSET)
AS ONE OF THE MAIN PILLARS IN ECONOMIC RECOVERY
PRESENTATION OUTLINEREQUIREMENTS FOR BENEFICIATION &
VALUE ADDITIONBENEFICIATION & VALUE ADDITION
METHODS & TECHNOLOGYADVANTAGES OF BENEFICIATION & VALUE
ADDITIONCHALLENGES FACED & SUGGESTED
SOLUTIONS
ZIMBABWE Empowered LivesResilient Nations
What are the key requirements for Beneficiation and Value AdditionSkilled personnel (metallurgists,chemists, etc)Efficient technologyWater Electrical powerTransport Infrastructure (rail, road, air)
REQUIREMENTS FOR BENEFICIATION & VALUE ADDITION
RAIL NETWORK AND DISTANCE FROM PORTS
6
Centre Rail Distances (km)
Beira Maputo Durban Richards Bay
Gweru 869 967 1,764 1,684
Bulawayo 1,051 1,083 1,880 1,800
Hwange 1,389 1,421 2,218 2,138
Mutare 290 1,546 2,641 2,561
Beitbridge 1,333 745 1,598 1,518
Chicualacuala 1,300 536 1,879 1,799
Liberation due to Crushing & Grinding
Liberated mineral particle
Middlings
Liberated gangue particle
CRUSHING FORCES
GOLD PROCESSING FLOWSHEET
Ore
Ball mill
Crusher
Boiler
Cyanidation tanks
Smelting furnace
Bullion
u/s
o/s
u/f
o/f
Loaded Carbon
Conc
Tails
Conc
Tails
Gravity concentrator
Gemine table
Screen Final
tails
GOLD PROCESSING FLOWSHEET 1
Stamp mill
Ore
Boiler
Cyanidation tanks
Smelting furnace
Bullion
Loaded Carbon
Conc
Tails
TailsGravity concentrator
Gemine table
Final tails
EXPLORATION
MINING
CONCENTRATION
Crushing, Grinding & Flotation
SMELTING AND CONVERTING
BASE METAL REFINING
PRECIOUS METAL REFINING
Ore
High grade concentrate
SO2 rich off-gas
Slag
Tailings
Nickel, copper & cobalt
Gold & Silver
Platinum, Rhodium, PalladiumRuthenium, Irridium & Osmium
High grade matte
BENEFICIATION
Flotation Process to Upgrade PGMs & Base Metals
The PGMs and Base Metals are floated using specialised reagents
EXPLORATION
MINING
CONCENTRATION
Crushing, Grinding & Flotation
SMELTING AND CONVERTING
BASE METAL REFINING
PRECIOUS METAL REFINING
Ore
High grade concentrate
SO2 rich off-gas
Slag
Tailings
Nickel, copper & cobalt
Gold & Silver
Platinum, Rhodium, PalladiumRuthenium, Irridium & Osmium
High grade matte
BNC,UNKI&MIMOSA
BENEFICIATION
EXPLORATION
MINING
CONCENTRATION
Crushing, Grinding & Flotation
SMELTING AND CONVERTING
BASE METAL REFINING
PRECIOUS METAL REFINING
Ore
High grade concentrate
SO2 rich off-gas
Slag
Tailings
Nickel, copper & cobalt
Gold & Silver
Platinum, Rhodium, PalladiumRuthenium, Irridium & Osmium
High grade matte
ZIMPLATS
BENEFICIATION
THE CASE FOR VALUE ADDITIONFluctuating metal prices place producers at a
disadvantageEmployment creation
VALUE ADDITION:refining of by-products from conversion of coal to coke. Crude benzole to benzene, toluene & xylene.Crude tar to creosote, road tar and soft pitch
© Rowan Gibson
LeadershipProcesses, Equipment and Tools
Leadership and Structure
Culture and Values
Managing for growth & efficiency
People and Skills