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Method for obtaining valuable ores from multi-metal sulfide ores containing lead and zinc through flotation separation

A technology for polymetallic and sulfide ore, applied in the field of flotation process, can solve the problems of increasing difficulty in operation, high cost of reagents, and high requirements for flotation equipment, so as to improve the efficiency and effect of beneficiation, reduce the cost of reagents, and reduce the grinding energy. consumption effect

Active Publication Date: 2014-08-27
CHANGSHA RES INST OF MINING & METALLURGY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The above-mentioned traditional process has the following two disadvantages: 1. The cost of chemicals is high; 2. The high-alkali and high-acid process increases the difficulty of operation. At the same time, the requirements for flotation equipment are higher, and the relevant equipment must be treated with special anti-corrosion treatment

Method used

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  • Method for obtaining valuable ores from multi-metal sulfide ores containing lead and zinc through flotation separation
  • Method for obtaining valuable ores from multi-metal sulfide ores containing lead and zinc through flotation separation

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Embodiment 1

[0037] Taking a lead-zinc-silver sulfide ore in Hunan as the object of treatment, the main metal minerals of this ore include galena, sphalerite, and pyrite, and the main gangue mineral is quartz. The oxidation rate of lead and zinc in the ore is about 5%. use as figure 1 The shown method for flotation separation of valuable minerals from lead-zinc-containing polymetallic sulfide ores comprises the following steps:

[0038] (1) Grinding: Grinding the raw ore first, grinding the raw ore to -0.074mm (or -200 mesh) accounts for 60%;

[0039](2) roughing: add combined flotation agent to carry out full-mix flotation roughing treatment to the ore after the above-mentioned step (1) grinding; the flotation concentration is 37%; the combined flotation agent includes dixanthate, Xanthate and MIBC, and the addition amount of second xanthate is 90g / t raw ore, the addition amount of butyl xanthate is 30g / t raw ore, the addition of MIBC is 60g / t raw ore, the dosage ratio of second xanthate...

Embodiment 2

[0048] Taking a lead-zinc mine in Guangxi as the object of treatment, the main metal minerals of this ore include galena, sphalerite, and pyrite, and the main gangue mineral is quartz. The oxidation rate of lead in the ore is relatively high, reaching about 30%, and zinc The oxidation rate is about 10%. use as figure 2 The shown method for flotation separation of valuable minerals from lead-zinc-containing polymetallic sulfide ores comprises the following steps:

[0049] (1) Grinding: Grinding the raw ore first, grinding the raw ore to -0.074mm (or -200 mesh) accounts for 50%;

[0050] (2) roughing: add combined flotation agent to carry out full-mix flotation roughing treatment to the ore after the above-mentioned step (1) grinding; flotation concentration is 37%; the combined flotation agent includes sodium sulfide, copper sulfate , dixanthate, butyl xanthate and MIBC, and the addition of sodium sulfide is 40g / t raw ore, the addition of copper sulfate is 40g / t raw ore, the...

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Abstract

The invention discloses a method for obtaining valuable ores from multi-metal sulfide ores containing lead and zinc through flotation separation. The method comprises the steps of firstly performing ore grinding on raw ores; then adding a combined flotation agent to perform complete-mixing rough flotation treatment on the raw ores subjected to the ore grinding; continuing to perform fine flotation on rough concentrates subjected to the rough flotation, and continuing to add the combined flotation agent to perform scavenging on tailings subjected to the rough flotation; re-grinding lead-zinc-sulfur mixed rough concentrates subjected to the fine flotation; adding the combined flotation agent into the grinded lead-zinc-sulfur mixed rough concentrates to perform impurity removal treatment, and performing scavenging on the tailings subjected to the impurity removal. On the basis of the method, lead-sulfur rough flotation, lead-sulfur fine flotation and lead-sulfur separation can be additionally performed to obtain lead concentrates, the tailings subjected to the flotation separation is subjected to lead scavenging, and finally sulfur concentrates are obtained. The method has the advantages of being simple and convenient to operate, reasonable in technological process, small in agent dosage, low in energy consumption, long in service life, good in separation effect and the like.

Description

technical field [0001] The invention relates to a flotation process, in particular to a flotation process of lead-zinc sulfide ore. Background technique [0002] The traditional process of beneficiation of lead-zinc sulfide ore is mainly high alkalinity priority floating lead process. When recovering lead minerals in this process, a large amount of lime needs to be added to the chemical system to suppress pyrite. In order to comprehensively utilize the pyrite resources in the ore, a large amount of sulfuric acid must be added to the tailings after recovery of lead minerals to activate the suppressed pyrite. [0003] The above-mentioned traditional process has the following two disadvantages: 1. The cost of chemicals is high; 2. The high-alkali and high-acid process increases the difficulty of operation. At the same time, the requirements for flotation equipment are higher, and the relevant equipment must be treated with special anti-corrosion treatment. Contents of the inv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/00B03B1/00
Inventor 何从行朱超英李淮湘聂世华周清波欧也斐聂正才易峦白成庆阳华玲吴希明
Owner CHANGSHA RES INST OF MINING & METALLURGY
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