China Nonferrous Metallurgy

Zinc leaching residue from zinc hydrometallargy is a kind of solid waste with both resource endowment and environmental hazard. Treating zinc leaching residue is of great significance for resource recovery and environmental protection. Various zinc leaching residue treatment technologies have been successfully applied in China, such as hot acid leaching, rotary kiln volatilization, fuming furnace fuming, top blowing smelting, side blowing smelting, and sulfur dioxide reduction leaching. However, there is still a certain gap in meeting the requirements of solid waste reduction, resource utilization, and harmless treatment. In this paper, characteristics of residue generated in the zinc leaching process and present industrial treatment of zinc leaching residue were discussed from the perspective of solid waste reduction, resource utilization and harmlessness. The difficulties of treatment for zinc leaching residue were discussed. Finally, suggestions and prospects were put forward.