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Method for flotation separation of valuable minerals from polymetallic sulfide ores containing lead and zinc

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

Active Publication Date: 2016-11-30
CHANGSHA RES INST OF MINING & METALLURGY +1
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  • Description
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  • Application Information

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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 flotation separation of valuable minerals from polymetallic sulfide ores containing lead and zinc
  • Method for flotation separation of valuable minerals from polymetallic sulfide ores containing lead and zinc

Examples

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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 flotation separation of valuable minerals from lead-zinc-containing polymetallic sulfide ores, which comprises the following steps: firstly grinding the raw ore; then adding a combined flotation agent to grind the raw ore after grinding Full mixed flotation roughing treatment; continue to select the coarse concentrate after roughing, continue to add combined flotation agent to sweep the tailings after roughing; Carry out regrinding; add a combined impurity remover to the regrinded lead-zinc-sulfur mixed rough concentrate for impurity removal, and the tailings after deimpurity return to the sweeping process. On the basis of the aforementioned method, lead-sulfur roughing, lead-sulfur concentration, and lead-sulfur separation can be added to obtain lead concentrate, and the tailings after flotation and separation are subjected to lead sweeping to finally obtain sulfur concentrate. The method of the invention has the advantages of simple and convenient process operation, reasonable process, less dosage of medicine, low energy consumption, long service life of equipment, good 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 Patents(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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