The practice of dealing with intermediate materials in lead smelting

Lead pyrometallurgical treatment process bottom-blown furnace soot needs to be opened periodically, about 1% of the feeding volume （composition: As: 1%-4%, Cd: 10%-20%, Pb: 34%-40%, Zn: 1%-6%）. Zinc oxide fumes are leached, electrowinned and slagged in the process of melting and casting zinc ingots, which is about 3% to 5% of the zinc ingot （composition Zn: 80%, of which zinc metal accounts for about 40%）. Gross silver （silver content: 50%-60%, copper 10%-20%） from lead anode slime smelting process. Conventional melting results in copper not being able to open the circuit and most closed-circuit cycles. Dust and scum intermediate material stockpiling not only cause capital backlog, but also pollute the environment, gross silver treatment is not only a long period, and the cost is high, for this part of the intermediate material handling process research, equipment selection, process design and other comprehensive recovery of valuable elements, to solve the material stockpiling, capital consumption, waste into treasure.