Mixed treatment technology of copper and lead anode slime

Abstract

The invention provides a mixed treatment technology of copper and lead anode slime. The mixed treatment technology comprises the technical steps that crude selenium and calcine are obtained after copper anode slime is subjected to sulfatizing roasting, a selenium dioxide product is obtained after crude selenium is subjected to oxidation, calcine is rinsed, and copper is removed; decoppering slagsare mixed with lead anode slime after being dried, a mixture of the decopper slags and lead anode slime is subjected to reduction smelting through a bullion lead furnace, soot, slags and primary bullion lead are obtained, and antimony is recycled from soot and the slags; primary bullion lead enters an antimony removing furnace, antimony is removed, antimony soot and secondary bullion lead are obtained, antimony is recycled from antimony soot, and secondary bullion lead is subjected to oxidation refining through a silver-smelting furnace; bismuth slags, tellurium slags, soot and a silver anodeplate are obtained through oxidation refining of the silver-smelting furnace, bismuth is recycled from the bismuth slags, tellurium is recycled from the tellurium slags, soot returns to a pyrometallurgy system to be treated, and the silver anode plate is subjected to silver electrolysis; and silver powder and black gold dust are generated through silver electrolysis, gold is recycled from black gold dust, silver powder is molten, and silver ingots are generated through pouring. According to the technology, mixed treatment of copper and lead anode slime and comprehensive recovery of various valuable metals like gold, silver, copper, lead, selenium, antimony, bismuth, tellurium are mainly achieved, and the problem that the quantity of wastewater generated in a traditional copper anode slimetreatment technology is effectively solved.

Description

technical field [0001] The invention belongs to the technical field of nonferrous smelting, and in particular relates to a process for mixing copper and lead anode slime. Background technique [0002] Copper anode slime and lead anode slime are anode slime products produced in the process of electrolytic copper and lead. At present, lead anode slime is generally treated by fire method, and copper anode slime treatment methods mainly include sulfate roasting-copper and silver leaching method, pressurized Sulfuric acid leaching for copper removal-Kaldo furnace smelting method, etc. Sulfuric acid roasting-copper and silver leaching method is mainly wet treatment, which produces a large amount of wastewater and high wastewater treatment costs, resulting in high cost of copper anode slime treatment; pressurization Copper removal by sulfuric acid leaching—Kaldo furnace smelting method, using pressure leaching to decopper, requires high operating technology, and there are certain s...

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Problems solved by technology

[0003] In order to solve the above problems, the present invention provides a mixed treatment process of copper and lead anode slime. After copper anode slime is sulfated and roasted to recover selenium and copper, it is mixed with lead anode slime and treated by fire method, which effectively solves the problem of traditional wet method. Dealing with problems such as scattered process flow, large amount of waste water, and difficulty in recovering valuable metals

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