Lead smelting - Wikipedia
The lead containing components are processed in blast furnaces for hard lead or rotary reverberatory furnaces for fine particles. The blast furnace is similar in structure to a cupola furnace used in iron foundries. The furnace is charged with slag, scrap iron, limestone, coke, oxides, dross, and reverberatory slag.The Principle of Blast Furnace Operational Technology and,,The Principle of Blast Furnace Operational Technology and Centralized Gas Flow by Center Coke Charging Dr. Yoshiyuki MATSUI, Research & Development Laboratory, Kakogawa Works, Iron & Steel Sector Dr. Koichiro SHIBATA, Yasuo YOSHIDA, Ironmaking Department, Kakogawa Works, Iron &Lead: Secondary Lead Smelter eTool - Smelting - Blast Furnace,Blast air for the combustion process enters the blast furnace through "tuyeres." The tuyeres occasionally begin to fill with accretions and must be physically punched, usually with a steel rod, to keep them unobstructed.