Chromite ore is available in nature mainly in the form of which contains 40 52% Cr2O3 and 15 20% FeO by weight Global annual output of chromite ore is approximately 20 Mt which has
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The chromite ores are generally part of the spinel crystal family having the general formula Fe2 Mg2 O Al3 Cr3 Fe3 2O3 pelletizing and iii briquetting Also the efficiency of the process for the production of Fe Cr depends on the type and pre conditioning of the feed materials namely i pre heating and ii pre reduction
A direct reduction process for the production of ferrochrome from chromite ore or concentrate is disclosed According to the present invention calcium chloride CaCl2 is added as a catalyst to accelerate the solid reduction and enhance the particle growth of the metallic phase ferrochrome during reduction The reduction of chromite ore or concentrate takes place at
Ferrochrome >62%Cr and charge chrome 45 52%Cr production using the submerged arc furnace SAF is an established practice in India As the majority of Cr rich Indian chromite ore are friable
A comparative description of these three processes demonstrates the advantages of cold briquetting of iron ore fines to be used as a suitable raw material for ironmaking shows the sectional view
The ease with which briquets can be made using sodium silicate is determined mainly by the conditions under which moisture is removed from the mixture that is prepared for briquetting The best approach is to mix sodium silicate with fines of the raw material which have a moisture content in the range % Realizing this range is quite feasible at many existing mining
However as discussed previously the briquetting of chromite ore fines requires costly binders exhibits poor performance in the ferrochrome production The making of green pellet with suitable cold handling strength from a chromite ore is difficult Also the crushing of raw materials for pelletization and the subsequent firing of the green
Normal chromite agglomeration processes include briquetting pelletizing or sintering Presently many ferro chrome plants make pellets utilizing the friable chromite ore fines by grinding it to suitable finer size say 60% < 45 μm and pelletize them
Chromite ore is available in nature mainly in the form of which contains 40 52% Cr2O3 and 15 20% FeO by weight Global annual output of chromite ore is approximately 20 Mt which has
In this work the effectiveness of using briquettes made from chromite ore mill scale and petroleum coke for direct chromium alloying is tested by induction furnace trials carried out in three
Reduction of chromite fines in solid state using a mixture of gases containing natural gas hydrogen and nitrogen Harman // INFACON 12 Helsinki Finland pp 283 388 Briquetting
beneficiating chromite ores from the Yuzho Kimpersaisk deposits in Kazakhstan However the market for those ores and concentrates has recently fallen off [7 8] decided to install a unit for briquetting the chromite concentrate at one of the concentration plants of the combine DOF 1 After considering different technologies for units
The three available processes for agglomeration are sintering briquetting and pelletising High capital investment coupled with introduction of gangue through solid fuel prohibits the use of sintering for chromite ores Briquetting is most commonly used as the investment is quite low and the process is simple
Request PDF Studies on Briquetting of Chromite Ore with Waste Plastic binder Plastics Binder ore fines Find read and cite all the research you need on ResearchGate
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Chromite ore is available in nature mainly in the form of which contains 40 52% Cr2O3 and 15 20% FeO by weight Global annual output of chromite ore is approximately 20 Mt which has
Sintering of a mixture of chromite ore fines and flux with the optimum composition at 1 600 degrees C was carried out in; i resistance furnace 100 g scale without using carbon and ii a pot
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Traditional chromite pretreatment methods including briquetting sintering and the Outokumpu process have a total energy consumption exceeding 2000 kgce/t 14 15 These methods have significant drawbacks including low production output high energy consumption and insufficient sinter strength Thus more effective chromite pretreatment
Our briquetting lines can process fines with grain size 0 8 mm The briquettes can be composed of up to five different raw materials which are continually mixed with liquid binder prior to briquetting The briquettes are oval the standard size of briquettes is 55 x 50 x 40 mm If necessary the briquettes can be forced dried
Supply of world chromite chrome ore has come under severe pressure over the past year driven by strong demand for ferrochrome used in ferroalloy production for making stainless steel
Operation of RMHS unit for 2 60 mva furnaces & 3 27 mva furnaces including 100 tph & 60 tph ore fines agglomeration unit & 100 tph metal recovery unit RMHS Agglomeration Chromite fines Briquetting Millscale/Pollution dust Briquetting Coke/Coal fines
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