Abstract:The material characteristics of oxidation cleaning residue in a copper smelter were analyzed and the bismuth extraction process was studied. The results show that the harmful impurity arsenic enrichment in coarse grain and the sulfur has good floatability, a new process of bismuth extraction by staged arsenic removal and flotation desulfurization is proposed. The combined dispersant CXS-1 and collector GJH were developed to realize the separation and enrichment of bismuth and impurities. The semi industrial test results show that the new process can remove arsenic and sulfur, and obtain bismuth rich slag with bismuth grade of 14.34 % and recovery rate of 83.02%.