METHOD OF EXTRACTION OF SILVER FROM LEAD-TIN ALLOYS

摘要

non-ferrous metallurgy; refining of lead-tin alloys. SUBSTANCE: lead-tin alloys are treated with zinc. After introduction of zinc, alloys are treated with elementary sulfur in the amount of 1 to 5% of mass of alloy, thus ensuring formation of sulfide zinc-silver dross. EFFECT: high percentage of extraction of silver from lead-tin alloys (up to 99%) without additional amount of noble metals. 3 tbl