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In the electrolytic process, milled high-carbon ferrochromium is leached by a smelting cell, a chrome alum mother liquor based on a solution of ammonium cycled from a later stage in the process, and sulfuric acid. The resultant slurry is cooled, and silica and other undissolved solids are filtered from the solution.read more
【 Introduction】 ore deposits are mined by both underground and surface techniques. most ore must be processed by the ore processing plants. the mainly ore beneficiation method is gravity separation. so the mainly used ore concentrating equipments are ore washbox sometimes it is called jigger, concentrating table, spiral classifiers, etc.read more
· Domestic for chromite was restricted to a few locations in the United States, including Montana, California, and Oregon, and the mineral was only economically feasible during times of political conflict. During wartime, the United States government supported domestic production with price supports and strategic stockpiling programs.read more
Samancor Mines. With low electricity prices, South Africa has been able to expand chromite and ferrochrome production more or less continuously since the AOD was developed in the 1960s to use ferrochrome smelted from lower-grade ores.read more
UNESCO – EOLSS SAMPLE CHAPTERS CIVIL ENGINEERING – Vol. II - Surface Methods and Equipment - J. Yamatomi and S. Okubo ©Encyclopedia of Life Support Systems EOLSS SURFACE METHODS AND EQUIPMENT J. Yamatomi and S. Okubo University of Tokyo, Japan Keywords: method, surface , open pit , open cast , placer , solution , …read more
· Chrome mining process Process: First use hopper and vibration screen feeding stone chrome to preliminary crusher, then to fine crusher, Then use belt to a hopper, underside the hopper have a feeder, feeder 0-20mm size to ball mill, ball mill working together with spiral classifier, then get 0-1mm size to shaking table, shaking table also have two stage, one for preliminary, one for fine.read more
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