A method for recovering gold and other precious metals from...

Details A method for recovering gold and other precious metals from... A method for recovering gold and other precious metals from...

C - Chemistry, Metallurgy

22

B

C22B 3/04 (2006.01) C22B 1/00 (2006.01) C22B 11/00 (2006.01) C22B 11/08 (2006.01)

Patent

CA 2123810

2123810 9406944 PCTABS00030 A method for recovering precious metals from carbonaceous ore comprising leaching the ore with a lixiviant solution and then preg-robbingly concentrating the precious metal-lixiviant complexes in solution on to the native carbonaceous component of the ore for subsequent recovery. The preg-robbing capacity of the native carbonaceous component of the ore can be augmented by adding recycled carbonaceous matter or finely ground carbon to the ore-lixiviant mixture. Furthermore, after the carbonaceous component of the ore is separated from the gangue, the gangue material can be treated in a hot CIL process to further increase the recovery of the precious metal.

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