Abstract:By collating production data of the oxygen enrichment side-blowing melting – multiple gun top blowing copper smelting process, the distribution rate of iron, zinc, lead and arsenic in the whole system was calculated. The phase composition and microstructure of some intermediates such as matte, smelting slag and converting slag were characterized by XRD, SEM/EDS and other test methods. The distribution behavior of main impurity elements such as iron, zinc, lead and arsenic in oxygen enrichment side blowing melting – multiple gun top blowing copper smelting process was comprehensively analyzed. The results show that iron is distributed in the slag in the form of iron olivine, zinc ferrite, and copper ferrite, etc., and most of zinc would also enter the slag in the form of zinc ferrate, so most of iron and zinc could be directly removed in the slag. Most of lead and arsenic enter the slag and dust, which can be removed and recovered in the form of slag and volatilization mechanism, but a considerable amount of lead and arsenic will remain in crude copper and can only be removed in subsequent electrolysis process. The effective methods and approaches of reduction and control of these impurity elements were summarized, which provides a reference for comprehensive treatment and stable production of impurity elements in copper smelting process.