Study on Copper Recovery of Lead-zinc Smelting Waste

According to problems of superfine dissemination size and low liberation degree of lead and zinc smelting waste in one company,the way of two stage rougher flotation and one stage scavenging,two segment regrinding and two cleaning operations of rough concentrate is used under the condition of grinding fineness of 85%-0.074 mm.Through the process above,the grinding fineness is 90%-0.049 mm,and a copper concentrate containing 20.36%Cu and 478.87 g/t Ag is obtained,with 64.86% Cu and 59.79% Ag recovered.