Best Good Price Lead Ingots Lead Ingots Lead Pipe Lead Wire Pure Lead Lead Ore 25kg Lead Ingot Lead Shot Lead Scrap

Lead extraction, metallurgy, pyrometallurgy and hydrometallurgy are two kinds of methods, the former is widely used in industrial production. The traditional pyrometallurgy method of lead generally includes three links: lead concentrate sintering and roasting, lead smelting, crude lead pyrorefining or (lead electrolytic refining). The blast furnace reduction smelting method is the most widely used traditional lead smelting method. The lead produced by this method accounts for 85% of the total lead production. Lead smelting by blast furnace reduction smelting method is a method of reducing lead oxide to coarse lead with coke as reducing agent. This method requires first sintering and roasting to convert most of PbS in lead sulfide concentrate into PbO, and then sintering and roasting materials into blocks. The crude lead produced by lead smelting also contains a lot of impurities. It needs to be refined by fire refining or electrolytic refining to obtain refined lead that meets the product quality standards and user requirements, and to recover valuable metals in the crude lead. Fire refining of crude lead plays a leading role in today's lead refining.

Lead is initially oxidized to PbO2 during heating and melting, and then decomposed to PbO after heating, and Pb3O4 (i.e. lead) is generated when heating to 603-723K. Pb2O3 or Pb3O4 is easy to dissociate at high temperature to form stable PbO.