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Flotation zinc oxide concentrate wet method smelting process

A technology of hydrometallurgy and zinc oxide, which is applied in flotation, solid separation, etc., can solve the problems of burning board, foam layer, remelting, etc., and achieve the effects of reducing production cost, avoiding loss, and simplifying the process

Inactive Publication Date: 2006-02-15
LANPING JINDING ZINC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a flotation zinc oxide concentrate wet smelting process, the process is simple, does not increase equipment investment, and can solve the problem of foam layer generated by flotation organic reagents in the process of zinc smelting and leaching, and the impact on electrolysis Problems such as burnt plates and remelting, etc. have also been solved, and the production interface problem of low-grade industrial mines that can be put into zinc smelting after enrichment is also solved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Take low-grade zinc oxide raw ore or zinc sulfide raw ore containing 11% zinc, and use a mixture of pine oil and dodecylamine as a flotation agent for flotation to obtain rich and concentrated ore containing 30% zinc. Slurry according to the liquid-solid ratio of zinc oxide concentrate and acid leaching solution 6:1, add acid solution for leaching for 3 hours, the leaching temperature is at 70°C, and at the same time add permanganate and tetravalent manganese accounting for 5.6% of the ore weight Ion mixture, remove iron, silicon ions and organic matter in ore. The leached pulp is flocculated with polyacrylamide and concentrated. The concentration time is 35 minutes. The concentrated underflow is used for the second-stage acid leaching operation, and the operating temperature is 60°C. The second-stage acid leaching pulp is subjected to full pulp pressure filtration, the filtrate is returned to the slurry, and the filter residue is stored; the concentrated supernatant is...

Embodiment 2

[0013] Take low-grade zinc oxide raw ore or zinc sulfide raw ore containing 8% zinc, and use a mixture of pine oil and dodecylamine as a flotation agent for flotation to obtain rich and concentrated ore containing 28% zinc. Slurry according to the liquid-solid ratio of zinc oxide concentrate and acid leaching solution 7:1, add acid solution for leaching for 2.5 hours, the leaching temperature is at 75°C, and at the same time, add permanganate and tetravalent manganese accounting for 3.0% of the ore weight Ion mixture, remove iron, silicon ions and organic matter in ore. The leached pulp is flocculated with polyacrylamide and concentrated. The concentration time is 54 minutes. The concentrated underflow is used for the second-stage acid leaching operation, and the operating temperature is 65°C. The second-stage acid leaching pulp is subjected to full pulp pressure filtration, the filtrate is returned to the slurry, and the filter residue is stored; the concentrated supernatant ...

Embodiment 3

[0015] Take low-grade zinc oxide raw ore or zinc sulfide raw ore containing 6% zinc, and use a mixture of pine oil and dodecylamine as a flotation agent for flotation to obtain rich and concentrated ore containing 24% zinc. Slurry according to the liquid-solid ratio of zinc oxide concentrate and acid leaching solution 6.5:1, add acid solution for leaching for 2 hours, the leaching temperature is at 80°C, and at the same time put in 4.6% of ore weight permanganate and tetravalent manganese Ion mixture, remove iron, silicon ions and organic matter in ore. The leached pulp is flocculated with polyacrylamide and concentrated. The concentration time is 65 minutes. The concentrated underflow is used for the second-stage acid leaching operation, and the operating temperature is 70°C. The second-stage acid leaching pulp is used for gold pulp pressure filtration, the filtrate is returned to the slurry, and the filter residue is stored; the concentrated supernatant is sent to the purifi...

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Abstract

The hydrometallurgy method for flotation zinc oxide concentrate comprises: (1) when acid leaching, adding permanganate and quadrivalent manganese ion; (2) after entering condensation tank, adding char powder or active carbon bar to adsorb residual organic solvent for supermatant. This invention solves generating foam layer, redissolving, interface and other problems.

Description

technical field [0001] The invention belongs to a smelting process, in particular to a wet smelting process for flotation zinc oxide concentrate. technical background [0002] The production of zinc both at home and abroad uses zinc calcine as raw material. In Yunnan, some mines have been exploited disorderly for many years, and the reserves of rich ore are declining day by day, and a large amount of industrial zinc oxide raw ore with a zinc content lower than 14% is produced. Due to the low zinc content, it cannot directly enter the zinc smelting process . In order to prolong the service life of mines and solve the serious situation of declining rich mines and increasing low-grade industrial mines, some enterprises adopt flotation of low-grade ores, and use the zinc oxide concentrate obtained from flotation as the main raw material for zinc smelting plants Tried and explored. In the test, it was found that the active substance molecules of the flotation organic reagents ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B3/06C22B3/24B03D1/01C22B19/00
Inventor 杨生安李树龙赵世春杨再兴赵道全杨道群黄大雄鹿辉阳周颂荣颜丽云
Owner LANPING JINDING ZINC
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