The sequential lixivation and precipitation of metals from...

Details The sequential lixivation and precipitation of metals from... The sequential lixivation and precipitation of metals from...

C - Chemistry, Metallurgy

25

C

C25C 1/20 (2006.01) C22B 1/00 (2006.01) C22B 3/08 (2006.01) C22B 3/10 (2006.01) C22B 3/22 (2006.01) C22B 11/00 (2006.01)

Patent

CA 2595275

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 higher valency metals 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 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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