Abstract:Using copper as the raw material for floating anode slime, the effects of acid/alkali concentration, reaction temperature, liquid solid ratio, oxygen partial pressure and stirring rate on the leaching rate of copper and arsenic were studied, and the optimum technological conditions were determined. The results showed that the leaching rate of copper and arsenic in black copper sludge by oxidizing acid leaching was 93.15% and 94.74%. The leaching rate of copper and arsenic in black copper sludge by oxidation alkali leaching was 90.27%. The effective separation copper and arsenic from other valuable metals was realized by oxidation leaching process of black copper sludge.