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

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

C - Chemistry, Metallurgy

22

B

C22B 11/00 (2006.01) C22B 3/00 (2006.01) C22B 3/04 (2006.01) C22B 3/44 (2006.01)

Patent

CA 2505740

The process of the present invention recovers precious metals from refractory carbonaceous precious metal ores by floating a portion of the ground ore, blending the concentrate with an unfloated portion of the ore, autogenously autoclaving the blended material, cooling the oxidized slurry by dilution, leaching the oxidized slurry after dilution in the presence of a thiosulfate lixiviant, and recovering the precious metal by suitable techniques.

L'invention concerne des procédés permettant de récupérer des métaux précieux à partir de matériaux réfractaires au moyen de lixiviants au thiosulsufate. Dans ces procédés, on peut utiliser une lixiviation en tas ou des lixiviants renfermant au moins un agent masquant.

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