Method for thiosulfate leaching of precious metal-containing...

C - Chemistry – Metallurgy – 22 – B

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C22B 11/00 (2006.01) C22B 3/12 (2006.01) C22B 3/26 (2006.01) C25C 1/20 (2006.01)

Patent

CA 2756715

Processes are provided for recovering precious metals from precious metal-containing materials. The processes comprise the steps of contacting the precious metal-containing material with a lixiviant to solubilize the precious metal, and electrowinning a resulting pregnant solution containing the solubilized precious metal in the presence of a sulfite to form a recovered precious metal and a barren solution.

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