Production of metallic lead

摘要

The production of metallic lead from lead bearing sources such as lead sulfide concentrates may be improved by subjecting the lead sulfide concentrates to a prehalogenation activation treatment at a temperature in the range of from about 300 DEG to about 600 DEG C. before subjecting said concentrate to the halogenation step which is effected at a temperature in the range of from about 80 DEG to about 120 DEG C. followed by leaching, filtering, crystallization and electrolysis.