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Copper-zinc separation beneficiation method

A beneficiation method, copper and zinc technology, applied in solid separation, flotation and other directions, can solve the problems of excessive copper content in zinc concentrate and high zinc content in copper concentrate

Inactive Publication Date: 2009-05-13
杭州建铜集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in spite of this, in actual production, the problem of excessive zinc content in copper concentrate or excessive copper content in zinc concentrate often occurs

Method used

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  • Copper-zinc separation beneficiation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0031] Example: figure 1 and figure 2 The dosage unit of the chemical in the ore is gram / ton. It can be seen from the study of the material composition that the copper, zinc and sulfur minerals in the ore are embedded in a relatively coarse particle size. Under the condition that the grinding particle size is 65-70%-0.074 mm, the chalcopyrite The monomer dissociation degree of zinc blende has reached 90%, and the monomer dissociation degree of sphalerite is also nearly 85%. Under this condition, copper, zinc and sulfur have already met the conditions for separation. The copper minerals are mainly chalcopyrite, and there are few secondary copper minerals. Except for sphalerite containing milky copper minerals, which is difficult to suppress, pure sphalerite is not activated by heavy metal ions, and its floatability is higher than that of copper. Minerals are poor, so it is necessary to make full use of the difference in their floatability, and it is reasonable to prefer coppe...

example A

[0033] If the ratio of Cu / Zn is less than 1.5, it is called sample A, and the ore blending is shown in the table.

[0034]

example B

[0036] Those with Cu / Zn ratio less than 2.5 are called B samples, and the ore blending is shown in the table.

[0037]

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Abstract

The invention relates to a copper-zinc separation beneficiation method which comprises the following steps: (1) primary grinding, that is, adopting a combined depressant comprising lime, sodium sulfide, zinc sulfate, and sodium sulfite under the condition that the size and the content of grinding particles are respectively -0.074 mm and 65 to 70 percent; (2) copper rough concentrates regrinding and concentration, that is, selecting out high-quality copper concentrates which contain high-grade copper and silver, but low zinc by adopting single groove speed flotation method and continually using the combined depressant constituted by lime, sodium sulfide, zinc sulfate, and sodium sulfite, so as to realize the zinc depressing and copper flotation; (3) zinc-sulfur separation, that is, using butyl xanthate as a collecting agent to float zinc, obtaining zinc-sulphur bulk concentrate, conducting pulp conditioning by adding lime so as to depress sulfur and float copper and obtain zinc concentrates and partial sulfur concentrates, conducting the iso-flotation on the tailings and further adding the butyl xanthate to conduct flotation and obtain partial sulfur concentrate. The invention has the advantages of adopting the processes of ore blending, primary grinding, copper rough concentrates regrinding and concentration, and zinc-sulphur iso-flotation technological process, thereby better solving the problem that the copper concentrates contain too much zinc or the copper content in the zinc concentrates is over standard.

Description

technical field [0001] The invention relates to a beneficiation technology for polymetallic ores, mainly a copper-zinc separation and beneficiation method. Background technique [0002] Polymetallic ore is a copper-zinc-sulfur primary sulfide ore rich in silver. The recoverable elements are copper, silver, sulfur, zinc, gold, etc. After flotation, three concentrates of copper, zinc and sulfur can be obtained, gold and silver. Concentrated in copper concentrate. Due to the changeable properties of copper-zinc-sulfur ore, the complex inlaid relationship and the various metal minerals, it brings great difficulty to the separation and beneficiation of copper and zinc. It is precisely because the flotation separation of copper-zinc ore is relatively difficult, so there are various conventional flotation processes at home and abroad, such as priority, mixed, partial priority or mixed floatable, etc. At the same time, in order to fully dissociate copper-zinc minerals, use In mult...

Claims

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Application Information

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IPC IPC(8): B03D1/00B03D1/004B03D1/002B03B1/00B03D101/02B03D101/06B03D103/02
Inventor 简富荣邵平胡晓锋齐民
Owner 杭州建铜集团有限公司
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