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1. 发明授权

US3901776A Process for the recovery of copper from its sulfide ores 失效
标题翻译：从其硫酸盐还原铜的方法
公开(公告)号：US3901776A
公开(公告)日：1975-08-26
申请号：US52358874
申请日：1974-11-14
申请人： CYPRUS METALLURG PROCESS
发明人： KRUESI PAUL R , GOENS DUANE N
IPC分类号： C22B15/00 , C25C1/12 , C22D1/16
CPC分类号： C22B15/0069 , C25C1/12 , Y02P10/236
摘要： An improvement in the process for recovering copper from its sulfide ores or concentrates thereof which comprises treating the ore with cupric chloride and/or ferric chloride to form a copper chloride electrolyte and a residue, electrolytically recovering copper from the electrolyte and further treating the residue with ferric chloride to solubilize substantially all of the copper remaining therein for conversion to copper chloride electrolyte, with ferrous chloride from the electrolyte being regenerated to ferric chloride for leaching the residue, the improvement which comprises conducting the electrolysis without the conversion of any cuprous copper to cupric copper, using a separator between the anolyte and catholyte compartments of the electrolytic cell to prevent passage of ions of copper and iron between the catholyte and anolyte, continuously further treating the residue with regenerated ferric chloride of a concentration to insure there is no cuprous copper in the resulting solution and regenerating ferric chloride from ferrous chloride in the solution free of cuprous chloride by passing the solution through the anolyte compartment of the electrolytic cell as copper is continuously being recovered at the cathode of the cell.

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