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本文介绍了用分段氧化法从铅锑银粗合金中回收金银的方法,由于粗合金中含有许多贱金属,如铅、锑、砷、铜、锡、铋以及碲等,而贵金属金、银含量却很少,因此,采用了二段氧化法处理这种粗合金。第一段氧化是将粗合金中大量的杂质氧化除去,金银含量浓缩至30～35％。第二段氧化是将第一段氧化的浓缩物逐次地合并,以除去铅、锑、砷、铜、锡、铋、碲等杂质,得到了Au+Ag>98％的金银合金锭,再予以电解精炼成电解银与电解金。
In this paper, the method of segregation oxidation to recover gold and silver from lead-antimony silver crude is introduced. As the crude alloy contains many base metals such as lead, antimony, arsenic, copper, tin, bismuth and tellurium, Silver content is very small, therefore, the use of two-stage oxidation of crude steel. Oxidation of the first stage is a large number of impurities in the crude oxide oxidation, silver and silver content is concentrated to 30 ~ 35%. The second oxidation is the first oxidation of the concentrates were sequentially combined to remove lead, antimony, arsenic, copper, tin, bismuth, tellurium and other impurities obtained Au + Ag> 98% of the gold and silver alloy ingot, and then Electrolyzed into electrolytic silver and electrolytic gold.