14-sample-data-art.pdf

7/27/2019 14-sample-data-art.pdf

1/6

CEMENT UNIVERSITY Search...

This Site

Home

Articles

Login

Cement Friends

Site Administrator

You are here: Home Articles Articles Rotary Kiln

Rotary Kiln

Category: Articles

Hits: 4417

Rotary kiln is refers to rotating calcining kiln (also known as rotatingkiln), which belongs to thermal equipment.Rotary kiln can be divided into metallurgy kiln, chemical engineeringkiln, and building material kiln according to its different dealing

materials. The building material kiln is mainly used in calcining clinkercement, limestone and porcelain granule. Metallurgy rotary kiln ismainly used for the magnetizing calcining of lean iron ore in iron andsteel plant in metallurgy industry, the chromites and josephiniteoxidizing calcining , calcining of dewalquite and clinker aggregate andaluminum hydroxide roasting in aluminum factory; Chemicalengineering rotary kiln is used in chemical plant for chromium ore andchromium ore powder roasting. The limestone kiln( activity limestonekiln ) is used for calcining activity lime and dolomite in iron and steelplant and ferroalloy works

Rotary kiln is the equipment which is widely used for dealing with solidmaterial mechanically, physically and chemically in building material,metallurgy, chemical, engineering and environment protectionindustries.

Metallurgy KilnMetallurgy rotary kiln: It is mainly used in lean iron and oxidized ore

magnetizing calcining; the chromites and josephinite oxidizingcalcining; calcining of high metallurgy ore in refractory works; calcining

of dewalquite and clinker aggregate and aluminum hydroxide calciningin aluminum factory; chromium ore and chromium ore powder in

chemical plant.Magnesium Kiln

Today

Yesterday

This week 2

This month 6

Total 63

Latest News

Waste Heat Recovery

System

Articles by Mr. Ricardo

Mosci

NDT - Coating thickness

Measurement Methods

NDT - Visual Inspection

NDT - Leak Testing

Methods

Visitor Counter

Sun 24 Mar 2013 10:44

META name=description content=`>

HOME CEMENT FRIENDS ABOUT ME

Page 1Rotary Kiln

3/24/2ttp://cementengineer.com/index.php/articles/14-sample-data-articles/108-rotary-kiln


2/6

The raw material{dolomite} which is the qualified material crushed bythe crusher is calcined into white by rotary kiln, cooled by the cooling

machine and then mixed evenly with silicon powder (75%) and silicapowder (including GaF2 fluorite=95%). Being grinded into powder byball mill, the marble machine will shape it as a ball which will be putinto the reducing furnace after being equipped with the heat-resistant

and stainless steel reduction jar. Then crude magnesium is restored andformed under the temperature of 1200-1250 degree celsius and vacuum

of -1.33PAa. By solvent refining, ingot casting and superficialtreatment, the magnesium ingot is formed.

Bauxite Rotary Kiln

This series of rotary kiln mainly consist of rotary bowl, supporting part,gearing, rotary hood, rotary hood and end sealer, and combustiondevice.Kiln eye frame cover is made in the form of block and it is easy to

install. It is of high heat-resistance, corrosion resistance, and wearingresistance. The cooling wind in the kiln hood packaged air conditionercan cool the kiln hood bowl and kiln eye frame cover evenly whichprolong its use span.Kiln hood cover adopts bulk mode which makes the air moving more

stable. The kiln hood and kiln end sealing introduces the double sealingmethod of radial friction labyrinth and flap. With simple structure and

easy maintenance, the double sealing is the most advanced sealingmethod inland.

Mineral Roasting Kiln

in order to lower the operation cost, the series of rotary kiln mix block

with powder in calcining. The green ore measured by the electronicbelt scale, belt conveyor, steady bunker, and air lock valves in the

reservoir will be fed into rotary kiln end directly. The steady bunker islocated only in kiln end in order to lower the cost. Ore put into the

rotary kiln will be heated first. Ore in the kiln moves oppositely to thehot air. Ore is heated to the reduction temperature in the heating area

and then enters into the reduction area where the temperature of thecentral flame zone is kept at about 1000 degree celsius and the

temperature of the steam zone is kept at about 700 degree celsius .Then the ore is reacted with the reduction gas and become magneticore for dressing by magnetic separation.

Nickel Kiln

Fetch the nickel and mix it with lime; filter the mixture and put the

powder agglomates into the rotary kiln chamber directly, crush theblock into powder agglomates and put them into rotary kiln chamber;

crush the coke and put them into rotary kiln chamber; deliver the

powder agglomates and coke; put the powder agglomates and coketogether into the first-degree mixture bowl to be mixed; after the first-degree mixture then comes to the second-degree mixture and somewater should be added to keep it moisture; deliver the mixed materialinto the rotary kiln and inlet the hot coal gas to reduction calcining;

put the roasted product into the hot furnace to smelt.

Building Materials Kiln

The building material kiln is mainly used in cement industry, such as

lime kiln, cement kiln and mud kiln.

Page 2Rotary Kiln



3/6

In the building material industry, besides calcining clinker cement, it

can be used to calcine clay, limestone, and dry slag. It also can be usedto produce ceramsite which can take the place of the green carpolite

and sand and add the buildings toughness and earthquake-resistanceperformance functionIn the production of refractory material, rotary is used to calcine the

material, making it stable in dimension and solid in strength. Then it isreprocessed and made formation.

Lime Kiln

. With advanced structure, the low pressure loss of the vertical

preheater can speed up the preheating process, the decomposition ratein the kiln of the preheated limestone can be 20-25%, and can usedirectly the 10-15mm fine grade limestone.2.Both ends of rotary kiln is sealed by combination scale, which ensuresthe index of air leakage less than 10%. In order to lessen the radiation

loss, it adopts compound refractory materials3.Round or square vertical cooler with filling type and ventilated area,which make the lime temperature 800 degree celsius + ambient

temperature. It is easy to transport, store, and can be preheated thesecondary kiln air to above 700 degree celsius , which reduce the

moving parts and special materials

Cement Rotary Kiln

Cement rotary kiln belongs to the building material equipment.Cement rotary is the main equipment in the dry production line ofclinker cement. This series of rotary kiln consist of bowl, supporting

part, supporting device with catch wheel, gearing rigging, flexible kilnhood, kiln hood and kiln end sealing device, nozzle device and so on.

The rotary kiln is higher than the horizon as the whole body issupported by the riding wheel with the catch wheel controlling the upand down move of the kiln body. Besides the main transmission, thetransmission system sets auxiliary transmission device which can keep

the kiln body move when the main power is off to protect it frombending deflection. The kiln hood and kiln end sealing device adoptsadvanced technology which ensures the security of the sealing.Cement rotary kiln is of solid structure, stable operation, and highquality output product.

Mud Kiln

Mud is the waste of paper-making factory. Due to the high contents in

silicon dioxide and other impurity, the lime recycling is hard. Presently,

most factories just transport and bury the mud. The problem is thefactory need investment to the mud bury and the secondary pollutionafter burying affect the local people's life and this may lead to

environmental-protection department's investigate. How to deal withthe mud bothers the factories for a long time.After many years' study, our company introduces the key technology ofmud rotary kiln from aboard and has produced the series of alkalirecycle mud calcining rotary kiln with proprietary intellectual property

rights. This technology offers new way for the multipurpose use of

Page 3Rotary Kiln



4/6

burweed alkali mud recycle, which has obvious social benefit and goodeconomic benefit.Chemical Kiln

Chemical kiln is used for calcining minerals in chemical engineeringfactory, such as: zinc oxide, titanium dioxide, kaolin, aluminum acidcalcium etc.The rotary kiln of our company features in simple structure, easycontrol production process, less wearing parts, high service factor, and

high quality. We have professional engineer to design product for you

and will send professional man to install for you. With first-class qualityand perfect after service, we are waiting for you consultation.

Zinc-oxide Rotary Kiln

Crush the zinc charging and the coke coal into powder lot less than 40.Mix the zinc charging with the coke coal pro rata 1:0.30~1.35 evenlyand make the mixture into granule with diameter being 8-15 mm. In the

end, put the granule into the brick kiln to smelt and produce zincoxide. This technics greatly saves the coke or fire coal. The productgained by smelting is of fine quality and high productivity.

Titanium Dioxide Kiln

The structure of titanium dioxide calcining kiln is similar to the rotary

kiln in alumina and cement industry. The bowl is made up of armorplate coil with fire-resisting lining inside and slant to the horizon. The

bowl is set with belting leather and the bearing is on the bearing deviceof its corresponding gear. Fix a bull gear with a tangential spring board

on the bowl around the central belting leather which is jointed with thepinion bellowing. In normal operation, the main transmission electricmotor transmits motion onto the open type gear by the main speedreducer thus drive the rotary kiln.

The working principal of titanium dioxide rotary kiln:

Send the filter pressed titanium dioxide filter mass to the rotary kilnend (the high end of the bowl) meanwhile the combustion nozzle in thekiln hood (the lower end of the bowl) blows the clean fire and hot wind

to the kiln and dehydrates and calcines the filter mass. The titaniumdioxide filter mass after being dehydrated and calcined under the hightemperature of above 1000 degree celsius can turn around the circleand move with the axial direction( from the high end to the low end) by

the slanted rotary kiln body. Being continuously like that , thedehydration and calcining will be finished. Finally through the double

hydraulic pressure reverse turning bed discharge valve in the lower partof the kiln hood cover, the material enters into the cooling machine.

The titanium dioxide is made after being cooled and filtered.Calcium Aluminate Rotary Kiln

The chemical composition of calcium aluminate is AL203 and CaO whichhave strong activity. The acid-solution method of producing water

purification agent can greatly save the human race and electric power,as well as cut the cost. With easy equipment and manipulation, it is the

ideal raw material to produce polyaluminium chloride.The products of calcium aluminate can be categorized into watertreatment, steel-making and deslagging and high alumina cement.

Page 4Rotary Kiln



5/6

The production method: crush the proportioned alumyte and limestone,

make them into ball and send them into the rotary kiln. Cool themafter calcining at the temperature of 1300 degree celsius. The calcium

aluminate is produced after crush and package.This series of equipment consist of bowl, supporting device, supportingdevice with catch wheel, gearing rigging, flexible kiln hood, kiln hood

and kiln end sealing device and combustion device. It have features ofsimple structure, stable operation, and easy control in product process.

Energy-saving Rotary Kiln

With the greatly increase of the price of energy, it brings great

pressure to the lime production enterprises, who face great challengesof their survival and development. With the more powerful inspectionabout the environment, the operation of enterprises becomes moredifficult. Thus, it is very important for the enterprises to seek a new

kind energy-saving, and environmental-protection active limecalcinations process. So it breaks the traditional lime productionprocess by absorbing the energy-saving and environmental-protectionlime production plant with vertical pre-heater and vertical cooler. And

it has already been recognized by the enterprises.

Efficiency of Energy-saving Rotary Kiln.The applicant of energy-saving rotary active lime kiln decreases thecoal consumption and exhaust emission .It cleans up the tail gas with

pulse jet bag filter and has passed the actual operating measurement.The productivity rises about 30%,the energy is saved about 40%, and the

area is saved about 40% which achieves the aims of energy-saving, high-efficiency, environmental protection. This kind of calcinations is themore advanced process in nowadays'active lime production and worthyto be popularized.

Ceramic Sand Kiln

At present the production equipment of ceramic sand is industrialrotary kiln. The columnar main kiln body has 2 degree obliquity angleto the level standard and is placed on the carrier roller. The material issent into the kiln from the high end. As the kiln is doing swivel motion,the material rolls from the high place (kiln end) down to the lowerplace (kiln hood). Meanwhile in the kiln hood, the nozzle sprays the gasinto the kiln to make it blaze fully. The heat produced makes thematerial change physically and chemically, and the ceramic sand isformed after the material being cooled down

Drying Kiln

This series of rotary kiln is an important equipment widely used in themanufacturing process of metallurgy, chemical engineering, cement,and food. For its difficulty in self-control, it is mostly controlledartificially or some control loop is controlled by analogue instrument.

The change in thermal current's speed and temperature of dryingmedium is the main factor affecting the operation and drying quality ofdrying rotary kiln in the manufacturing process of drying rotary kiln.The guiding theory of drying rotary kiln's temperature field control: bycontrolling the distribution of thermal current's speed and temperatureof drying medium in rotary kiln and the quality of the gas combustion, astable and appropriate drying environment can be formed in the kiln,that is temperature field, to satisfy the demand of drying techniques.

Page 5Rotary Kiln



6/6

Translator

Select Language

Powered by Translate

Share With Friends

Delicious

Powered by Joomla!. Designed by: reseller web hosting domain names and ssl Valid XHTML and CSS.

Page 6Rotary Kiln

Documents

14-sample-data-art.pdf