Process for the enhanced production of silver from gold and...

C - Chemistry – Metallurgy – 22 – B

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C22B 3/24 (2006.01) B01J 20/20 (2006.01) C01B 31/08 (2006.01) C01G 5/00 (2006.01) C22B 11/00 (2006.01) C22B 11/08 (2006.01)

Patent

CA 2041719

A PROCESS FOR THE ENHANCED PRODUCTION OF SILVER FORM GOLD AND SILVER BEARING ORE ABSTRACT OF THE DISCLOSURE There is disclosed a process for recovering gold and silver values from ore using activated carbon for adsorbing the values, wherein the activated carbon is treated with a suitable oxidant having an oxidation potential higher than that of oxygen. A preferred oxidant is potassium permanganate. Activated carbon so treated has an enhanced affinity for adsorbing silver, even under conditions which traditionally have favoured loading of carbon with gold.

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