METHOD FOR CHEMICAL TREATMENT OF LEAD DUST CONSISTING OF LEAD SULFIDE AS A MAIN COMPONENT

摘要

A first step of producing lead sulfate by sulphating the main lead as lead sulfide using a mixture of sulfuric acid and nitric acid as a powerful oxidizing agent, and a second step of producing lead carbonate by carbonizing lead sulfate using a carbonate solution, carbonic acid Disclosed is a method for chemical treatment of lead comprising a third step of leaching lead with nitric acid to produce purified lead nitrate. This method of chemical treatment of fumes minimizes the release of environmental pollutants, facilitates cupola operations without the need to re-inject fumes into the dry smelting process, while producing high value-added lead at low cost. Can be.