Recovery of gold and silver values

Details Recovery of gold and silver values Recovery of gold and silver values

C - Chemistry, Metallurgy

22

B

53/234

C22B 11/08 (2006.01) C22B 3/00 (2006.01) C22B 11/00 (2006.01)

Patent

CA 1125033

ABSTRACT OF DISCLOSURE A method of recovering gold and silver values from a solution obtained as a result of the leaching of a gold and silver bearing ore with a cyanide solution and contacting the solution with activated carbon to adsorb the gold and silver values in solution, the method being characterised by lowering the pH of the solution to a suitable value below 8, generally between 4 and 5, prior to contacting it with carbon and by the contact time being such that substantially all the gold and silver values are adsorbed on to the activated carbon.

333957

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