Process for the extraction of gold from anode sludges in the form of a material containing lead sulphate as the main ingredient and low proportions of silver and precious metal

摘要

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.