FIELD: 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
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF PROCESSING TIN-CONTAINING IRON-ARSENIC ALLOYS | 1994 |
|
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| METHOD FOR PROCESSING LEAD WASTES CONTAINING ANTIMONY, TIN AND COPPER | 1996 |
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| ORE-SMELTING ELECTRIC FURNACE | 1994 |
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| METHOD OF PROCESSING ZINC WASTES | 1999 |
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| METHOD OF PRODUCING NOBLE METALS FROM CARBONACEOUS MATERIALS | 1996 |
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RU2114202C1 |
