Abstract:In order to solve the problem of continuous enrichment of cadmium in lead fume in the process of oxygen-rich top blowing lead, the advantages of combined lead-zinc smelting process were brought into play, and the wet zinc smelting process was used to jointly dispose of lead fume in the process of oxygen-rich top blowing lead, so as to realize the separation and recovery of cadmium. Lead dust dilute sulphuric acid leaching period of cadmium leaching rate is 85.7%, smoke lead in silver into the leaching residue return lead system realize the recycling of lead, leaching liquid adopts copper slag dechlorination control of chlorine ion concentration is less than 200 mg/L, after the chloride liquid into wet zinc smelting leaching, purification process, the recovery of cadmium realize the recycling use of cadmium, realize the effective way of cadmium in lead dust. The technology is economical and environmentally friendly, and has strong operability.