摘要：An efficient chlorination roasting process for recovering zinc(Zn)and lead(Pb)from copper smelting slag was *** models were established,illustrating that Zn and Pb in copper smelting slag can be efficiently recycled during the chlorination roasting *** decreasing the partial pressure of the gaseous products,chlorination was *** Box−Behnken design was applied to assessing the interactive effects of the process variables and optimizing the chlorination roasting ***_(2) dosage and roasting temperature and time were used as variables,and metal recovery efficiencies were used as *** the roasting temperature was 1172℃ with a CaCl_(2) addition amount of 30 wt.%and a roasting time of 100 min,the predicted optimal recovery efficiencies of Zn and Pb were 87.85%and 99.26%,respectively,and the results were validated by experiments under the same *** residual Zn-and Pb-containing phases in the roasting slags were ZnFe_(2)O_(4),Zn_(2)SiO_(4),and PbS.