Noble metal recovery

Details Noble metal recovery Noble metal recovery

C - Chemistry, Metallurgy

22

B

C22B 3/24 (2006.01)

Patent

CA 2147307

Gold recovery up to and above fire assay grades achieved by adding prior to or during the leaching step a cationic complex solubilising agent such as E.D.T.A. which does not act as a collector for gold values in the solution. This agent in an amount of .001 to 10% by weight removes cationic sites in the ore orprecipitate thought to be caused by the presence of base metals such as lead in the ore.

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