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US 4,389,248 AGranted
Method of recovering gold from anode slimes
AssigneeSumitomo Metal Mining Co., Ltd.
InventorsToshimasa Iio, Toyokazu Ohkubo
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Abstract
A method of recovering gold from anode slimes resulting from electrolytic copper refining comprises treating the anode slimes to remove copper and selenium, forming an aqueous slurry from the treated slimes, blowing chlorine gas into the aqueous slurry to dissolve the gold therein, and separating the so-dissolved gold from the residue.
Claims18
A method of recovering gold from anode slimes generated during electrolytic copper refining, said method comprising the steps of
- (1) removing copper and selenium from said anode slimes;
- (2) adding exclusively water to the anode slimes from which the copper and selenium have been removed in step (1) in order to form an aqueous slurry;
- (3) blowing exclusively chlorine gas into said aqueous slurry of step (2) to dissolve the gold;
- and
- (4) separating said dissolved gold from the residue.
2 more elements
Dependencies are inferred from the claim text.