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Method for comprehensively recycling zinc, copper, lead, gold, silver and sulfur from floatation silver concentrate

A silver concentrate and copper recovery technology, which is applied in the field of comprehensive recovery of sulfur, copper, silver, lead, zinc, and gold, can solve problems such as low recovery rate, complicated process, and impact on comprehensive recovery benefits, so as to reduce recycling production costs, Improve the effect of economic and technical indicators

Inactive Publication Date: 2013-07-24
HUNAN SHUI KOU SHAN NONFERROUS METALS GRP
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Problems solved by technology

[0002] Most of the conventional zinc system flotation silver concentrates are directly returned to the lead system for comprehensive recovery of zinc, copper, lead, gold, silver and sulfur, and the flotation silver concentrates are directly returned to the lead system for comprehensive recovery of zinc, copper, lead, gold, silver, Sulfur has the disadvantages of complex process, high cost, and low recovery rate, which seriously affects the comprehensive recovery efficiency

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  • Method for comprehensively recycling zinc, copper, lead, gold, silver and sulfur from floatation silver concentrate

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Embodiment 1

[0022] Embodiment 1: A method for comprehensively recovering zinc, copper, lead, gold, silver, and sulfur from flotation silver concentrate, which is the product of conventional hydrometallurgy acid leaching slag after flotation , its composition is: Pb 2~6%, Cu 1~6%, Fe 10~30%, Zn 20~40%, S 15~30%, Au 10~20g / t, Ag 4000~10000g / t, of which , Pb, Cu, Fe, Zn, and S components are weight percentages, and Au and Ag components are weight ratios.

[0023] Among the above Ag components: elemental silver content is 1738-4347 g / t, silver sulfide content is 1992-4981 g / t, silver oxide content is 1-25 g / t, silver content in sulfide is 239-597 g / t, sulfate radical The silver content in the silver is 1-25 g / t, and the silver content in the silicate is 28-70 g / t; among the above-mentioned Zn components: the content of zinc sulfate is 1.21-2.42%, the content of zinc oxide is 1.58-3.16%, and the content of zinc sulfide is 10.13-20.27%, the zinc content in zinc-iron spinel is 7.07-14.14%; amon...

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Abstract

The invention relates to a method for comprehensively recycling zinc, copper, lead, gold, silver and sulfur from floatation silver concentrate. The method comprises the following steps of: firstly carrying out size mixing on flotation silver concentrate, mixing the flotation silver concentrate and zinc electrolytic waste liquid for size mixing in the size mixing process, wherein the sulfuric acid concentration of the zinc electrolytic waste liquid is 180-250g / L, and the proportion of the flotation silver concentrate to the zinc electrolytic waste liquid is 1: (6-10); then adding the flotation silver concentrate subjected to size mixing to a high-pressure reactor for carrying out high-temperature high-pressure dispersion; after the high-temperature high-pressure dispersion is ended, carrying out oxygen pressure acid leaching on the flotation silver concentrate, then carrying out filtering separation on the flotation silver concentrate by a filter press, and filtering and separating to obtain leachate and leaching residues, wherein the leachate enters an electrolytic zinc system so as to recycle copper, zinc, lead, gold, silver, while elemental sulfur is enriched in the form of leaching residues, and finally returning to a bottom blowing furnace of a lead system for recycling.

Description

technical field [0001] The invention relates to the technical field of metal smelting, in particular to a method for comprehensively recovering zinc, copper, lead, gold, silver and sulfur from flotation silver concentrate. Background technique [0002] Most of the conventional zinc system flotation silver concentrates are directly returned to the lead system for comprehensive recovery of zinc, copper, lead, gold, silver and sulfur, and the flotation silver concentrates are directly returned to the lead system for comprehensive recovery of zinc, copper, lead, gold, silver, Sulfur has the disadvantages of complex process, high cost, and low recovery rate, which seriously affects the comprehensive recovery efficiency. [0003] At present, the oxygen pressure acid leaching technology has been widely used in the field of zinc hydrometallurgy. For example, the oxygen pressure acid leaching technology is used to add oxygen and pressure to the lead-zinc mixed concentrate, then sulfu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B1/00C22B3/08C22B13/00C22B19/00C22B11/00C22B15/00
CPCY02P10/20
Inventor 付绸琳何从行谭振华钟雄曾小冬付高明张晓林
Owner HUNAN SHUI KOU SHAN NONFERROUS METALS GRP
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