Lead and Zinc Smelting Industry - Pollution Prevention ...
1998year1month1day · Industry Description and Practices. Lead and zinc can be produced pyrometallurgically or hydrometallurgically, depending on the type of ore used as a charge. In the pyrometallurgical process, ore concentrate containing lead, zinc, or both is fed, in some cases after sintering, into a primary smelter. Lead concentrations can be 50–70%,