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    • 6. 发明申请
    • PRECIOUS METAL RECOVERY
    • 精美的金属回收
    • WO1984002148A1
    • 1984-06-07
    • PCT/AU1983000176
    • 1983-12-01
    • CLARKE, Stuart, Guy
    • C22B11/08
    • C22B15/0091C22B3/44C22B11/08C22B15/0076C22B15/0089Y02P10/234Y02P10/236
    • A process for recovering precious metals from an alkaline cyanide process liquor containing a base metal component. The liquor is treated with precipitant for at least one base metal of said component, the precipitant being selected from mineral acids and reducing agents and being added in an amount sufficient to precipitate a major portion of said at least one base metal and to coprecipitate said precious metal values. The process is exemplified by cyanide leaching a Cu/Ag/Au tailing and a coprecipitating Cu/Ag/Au by adding H2SO4 to bring the pH to 2.5 to 1.0, or by using a sulphite as a reductant; with the base metal component being supplemented by adding Cu or Fe salts to the leach liquor. The precipitate product of precious metal and base metal salts (preferably both as cyanide salts) is filtered, roasted and sold for further refining.
    • 从含有贱金属成分的碱性氰化物处理液中回收贵金属的方法。 所述液体用所述组分的至少一种贱金属的沉淀剂处理,所述沉淀剂选自无机酸和还原剂,并且以足以沉淀所述至少一种贱金属的主要部分并且共沉淀所述贵重金属 金属价值。 该方法的例子是氰化物浸出Cu / Ag / Au拖尾和共沉淀的Cu / Ag / Au,通过加入H 2 SO 4使pH达到2.5至1.0,或通过使用亚硫酸盐作为还原剂; 其中贱金属组分通过向浸出液中加入Cu或Fe盐来补充。 贵金属和碱金属盐(优选氰化物盐)的沉淀产物被过滤,焙烧和出售以进一步精制。