Production of metallic lead

摘要

Metallic lead may be obtained from lead bearing sources such as lead sulfide ores or concentrates by halogenating the lead source, brine leaching the lead halide to separate the soluble lead halide from solid material such as gangue and recrystallizing the lead halide at a reduced temperature. Following this the lead halide is then converted to lead carbonate by treatment with carbon dioxide followed by solubilizing the lead carbonate in hydrofluosilicic acid and electrowinning the product to produce a purer lead sheet on the cathodes.