发明名称 Recovering magnetite and ammonium sulphate from ammonium jarosite
摘要 Ammonium jarosite is converted to hematite or magnetite and ammonium sulphate. The invention can be used for removing iron from a feed solution containing dissolved ferrous sulphate. The feed solution is treated with ammonium sulphate and oxygen to precipitate ammonium jarosite which is then separated from the treated solution to produce an ammonium jarosite slurry and a separated solution containing sulphate ions. The ammonium jarosite slurry is treated with ammonia to convert the ammonium jarosite to hematite or magnetite and ammonium sulphate solution. The ammonium sulphate solution is separated from the hematite or magnetite, and a portion of the separated ammonium sulphate solution is recycled to the ammonium jarosite precipitation step, the remaining portion of the separated ammonium sulphate solution being recovered.
申请公布号 US4150095(A) 申请公布日期 1979.04.17
申请号 US19780876778 申请日期 1978.02.10
申请人 SHERRITT GORDON MINES LIMITED 发明人 KUNDA, WASYL;VELTMAN, HERBERT
分类号 C01C1/242;C01G49/08;(IPC1-7):C01G49/14;C01C1/24 主分类号 C01C1/242
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