Oxidative leach process for extracting metal from ore

Details Oxidative leach process for extracting metal from ore Oxidative leach process for extracting metal from ore

C - Chemistry, Metallurgy

22

B

C22B 3/06 (2006.01) C22B 3/04 (2006.01) C22B 11/00 (2006.01) C23G 1/02 (2006.01)

Patent

CA 2446504

This invention relates to an improved electrochemical process for winning platinum group and incidental precious metals from ore. The process utilizes a peroxide leach in combination with electricity to produce hyper-oxides and comprises the following steps: combining ground ore a solution comprising water with a selected amount of H2O2 and an anion source to form a slurry, applying a direct current to the slurry while allowing the metal in the ore to leach into the solution for a selected period of time; filtering and clarifying the leached slurry to obtain a pregnant solution, and treating the pregnant solution to yield metal, metal salts or both.

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