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Hydrometallurgical extraction of nickel and cobalt from chloride or sulfide or laterite ores assisted by chloride
Hydrometallurgical extraction of nickel and cobalt from chloride or sulfide or laterite ores assisted by chloride
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机译:湿法冶金从氯化物,硫化物或红土矿石中氯化物辅助萃取镍和钴
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摘要
A process for the extraction of metal from an ore or concentrate which contains nickel and/or cobalt values and other metals, comprises subjecting the ore or concentrate to acid leaching under pressure at pH=2 to obtain a liquor containing nickel and/or cobalt values, subjecting the liquor to a first precipitation stage at pH of about 5 to 6 to produce a solid containing non nickel and non cobalt metals and a resultant solution containing the nickel and/or cobalt values and subjecting the resultant solution to a second precipitation stage at a pH of about 7 to 8 to produce a solid containing nickel and/or cobalt.
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