Method for recovering gold from refractory carbonaceous ores

Details Method for recovering gold from refractory carbonaceous ores Method for recovering gold from refractory carbonaceous ores

C - Chemistry, Metallurgy

22

B

C22B 11/00 (2006.01) C22B 3/04 (2006.01) C22B 3/20 (2006.01)

Patent

CA 2278044

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.

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