A kind of beneficiation method of copper-zinc ore containing easy pumice gangue

A beneficiation method and technology of copper and zinc sulfide, which are applied in flotation, solid separation and other directions, can solve the problems of low and low zinc recovery rate, and achieve the effect of strengthening zinc recovery, improving recovery rate and improving recovery rate.

Active Publication Date: 2017-03-15
BEIJING GENERAL RES INST OF MINING & METALLURGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these gangue inhibitors will have a great negative impact on the flotation of zinc concentrates, resulting in a low zinc recovery rate, generally not higher than 69%.

Method used

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  • A kind of beneficiation method of copper-zinc ore containing easy pumice gangue
  • A kind of beneficiation method of copper-zinc ore containing easy pumice gangue
  • A kind of beneficiation method of copper-zinc ore containing easy pumice gangue

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0077] In the raw ore of a copper-zinc sulfide mine in Xinjiang, by weight percentage, the chalcopyrite content is 3.2%, the sphalerite content is 3.4%, the pyrite content is 1.9%, the talc content is 23.2%, and the calcite content is 15.2%. %, the overall content of sericite and chlorite is 20.8%, the overall content of quartz and feldspar is 27.1%, and the content of amphibole is 4.6%.

[0078] Adopt the copper-zinc sulfide ore beneficiation method of the embodiment of the present invention to carry out beneficiation to this raw ore, its concrete steps are as follows:

[0079] (1) The step of ore grinding: add the raw ore and lime of copper sulfide zinc ore to the ball mill, the consumption of lime is 1500g / t, and add water to the raw ore and lime in the ball mill, the liquid-solid ratio of water to raw ore and lime 1:1; after adding water, grind the ore until the ore with a particle size of no more than 0.074mm accounts for 85% of the total weight of the raw ore, stop the g...

Embodiment 2

[0095] In the raw ore of a copper-zinc sulfide mine in Yunnan, it contains 0.23% copper and 3.16% zinc by weight percentage. Metal minerals mainly include chalcopyrite, sphalerite, magnetite, pyrrhotite, pyrite, and cassiterite; gangue minerals include pyroxene, quartz, mica, chlorite, calcite, talc, feldspar, Fluorite, apatite, titanite, andandrite, etc.

[0096] The copper sulfide-zinc ore beneficiation method in the embodiment of the present invention is used to beneficiate the raw ore, and the beneficiation result is as follows: by weight percentage, in the obtained copper concentrate, the copper grade is 18.54%, and the copper recovery rate is 66.72%. ; In the obtained zinc concentrate, the zinc grade is 46.07%, and the zinc recovery rate is 86.29%.

[0097] The raw ore is beneficiated by the sulfide ore beneficiation method in the prior art; the beneficiation results are as follows: by weight percentage, in the obtained copper concentrate, the copper grade is 15.44%, an...

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Abstract

The invention discloses a beneficiation method for copper sulphide zinc ore containing easily-floating gangue. The beneficiation method comprises the steps that copper roughing is carried out, wherein zinc depressants, copper collecting agents and foaming agents are added in raw ore pulp of the copper sulphide zinc ore, flotation operation is carried out, and thus copper rough concentrate mainly containing copper and the easily-floating gangue and copper rougher tailings mainly containing zinc are obtained; separation between copper and gangue is carried out, wherein gangue depressants and zinc depressants are added in the copper rough concentrate, floatation is carried out, and copper secondary rough concentrate mainly containing copper and copper and gangue separated tailings mainly containing the easily-floating gangue are obtained. According to the beneficiation method for copper sulphide zinc ore containing easily-floating gangue, the easily-floating gangue can be effectively removed so that high-grade copper concentrate and high-grade zinc concentrate are obtained, the recovery rate of the copper concentrate and the recovery rate of the zinc concentrate can be substantially improved.

Description

technical field [0001] The invention relates to the technical field of mineral processing, in particular to a mineral processing method for copper-zinc sulfide ore containing buoyant gangue. Background technique [0002] At present, most of the deposits of sulfide minerals will contain different degrees of pumice gangue. The easily floating gangues in sulfide ores are mainly talc, serpentine, chlorite and other minerals. According to the ore properties of various types of pumiceous gangue, there are subtle differences in the buoyancy of pumiceous gangue; well-crystallized talc is very easy to float, and only a small amount of foaming agent can cause a large amount of pumiceous gangue. Floating; talc or serpentine with slightly poor crystallization has good buoyancy. With the gradual increase of the amount of collector and foaming agent, this kind of gangue will float up in large quantities. [0003] During the flotation process of sulfide ores containing buoyant gangue, th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03B1/04B03D1/02B03D101/02B03D101/04B03D101/06B03D103/02
Inventor 孙志健李成必王立刚叶岳华刘万峰曾克文陈经华刘水红田祎兰
Owner BEIJING GENERAL RES INST OF MINING & METALLURGY
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