Method for aqueous gold thiosulfate extraction using...

Details Method for aqueous gold thiosulfate extraction using... Method for aqueous gold thiosulfate extraction using...

C - Chemistry, Metallurgy

22

B

C22B 3/24 (2006.01) C22B 3/12 (2006.01) C22B 11/00 (2006.01)

Patent

CA 2738382

A gold thiosulfate leaching process uses carbon to remove gold from the leach liquor. The activated carbon is pretreated with copper cyanide. A copper (on the carbon) to gold (in solution) ratio of at least 1.5 optimizes gold recovery from solution. To recover the gold from the carbon, conventional elution technology works but is dependent on the copper to gold ratio on the carbon.

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