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Resourceful treatment method of high-sulfur copper tailings, and product and application thereof

A treatment method and technology for copper tailings, applied in chemical instruments and methods, grain treatment, wet separation, etc., can solve the problems of fine particle size, complex copper tailings components, and difficulty in reducing and comprehensive utilization, etc. To achieve the effect of efficient recycling, convenient operation and simple process

Active Publication Date: 2021-01-26
铜陵有色金属集团股份有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because most copper tailings have the characteristics of complex components and fine particle size, it is difficult to reduce and comprehensively utilize them on a large scale

Method used

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  • Resourceful treatment method of high-sulfur copper tailings, and product and application thereof
  • Resourceful treatment method of high-sulfur copper tailings, and product and application thereof
  • Resourceful treatment method of high-sulfur copper tailings, and product and application thereof

Examples

Experimental program
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Effect test

Embodiment approach

[0065]As an optional embodiment of the present invention, the tailings slurry B is dehydrated and then subjected to pulverization modification treatment, and grinding aids and modifiers are added during the pulverization modification treatment to obtain cement active mixed materials.

[0066]Since tailings slurry B contains a certain amount of water, it is necessary to dewater the tailings slurry B before pulverizing and modifying it to obtain a cement active mixture. The specific method of dehydration treatment can be a treatment method commonly used in the art, such as thickening, filtering or drying.

[0067]Since the tailings obtained after the dehydration treatment of the tailings slurry B are large in block or granular, which is not conducive to subsequent processing and utilization, it needs to be crushed. At the same time, because copper tailings have no pozzolanic activity compared with commonly used cement mixtures, certain physical or chemical methods are needed to modify them ...

Embodiment 1

[0105]This embodiment provides a resource treatment method for high-sulfur copper tailings, which includes the following steps:

[0106](A) The high-sulfur copper tailings are subjected to flotation desulfurization treatment to obtain sulfur concentrate and tailings slurry A; wherein the mass fraction of sulfur in the tailings slurry A is not more than 1.4%;

[0107]Flotation desulfurization includes the first roughing, second roughing and sweeping. The time of the first roughing, second roughing and sweeping is 5min, and the first roughing and second roughing Separately add desulfurization activator, regulator, collector and foaming agent for roughing and sweeping;

[0108]The desulfurization activator for the first rough selection is oxalic acid, its dosage is 3500g / t, the regulator is copper sulfate, its dosage is 100g / t, the collector is amylxanthate, its dosage is 200g / t, foaming agent BK202, its dosage is 112g / t; inhibitor is sodium hexametaphosphate, its dosage is 100g / t;

[0109]The des...

Embodiment 2

[0115]This embodiment provides a resource treatment method for high-sulfur copper tailings, except that in step (c), the grinding aid is polyethylene glycol monomethyl ether and sodium methacrylate sulfonate (the mass ratio of the two is 1:1 ), the remaining steps are the same as in Example 1.

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Abstract

The invention provides a resourceful treatment method of high-sulfur copper tailings, and a product and application thereof, and relates to the technical field of resourceful treatment of tailings. The resourceful treatment method of the high-sulfur copper tailings includes the steps of desulfurizing the high-sulfur copper tailings to obtain sulfur concentrate and tailing pulp A; treating the tailing pulp A to obtain building sand and tailing pulp B; and treating the tailing pulp B to obtain a cement active admixture. According to the resourceful treatment method of the high-sulfur copper tailings, and the product and application thereof, all-component efficient recycling of the high-sulfur copper tailings is achieved while the adverse effect of sulfur-containing components in the high-sulfur, fine-fraction and high-moisture copper tailings which are difficult to utilize on downstream resource utilization products is avoided, and the raw material supply pressure of the building sandstone and cement industry is effectively relieved while the tailings treatment problem is solved; and meanwhile, the resourceful treatment method of the high-sulfur copper tailings does not generate secondary waste, and is suitable for industrial production.

Description

Technical field[0001]The invention belongs to the technical field of tailings resource treatment, and specifically relates to a resource treatment method of high-sulfur copper tailings, and products and applications thereof.Background technique[0002]The grade of copper ore in my country is generally low, so the output of copper tailings is huge. In 2018, the output of copper tailings in my country was approximately 302 million tons, which is second only to iron tailings and is the second largest annual output of tailings in my country. In 2018, the average comprehensive utilization rate of tailings in my country was 27.69%, of which the comprehensive utilization rate of copper tailings was only 15%. Because most copper tailings have the characteristics of complex composition and finer grain size, it is difficult to reduce and comprehensively utilize them on a large scale.[0003]High-sulfur copper tailings are a more typical type of copper tailings. Its main characteristics are high s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B9/06B03B7/00B09B3/00B09B5/00B03D1/018B03D3/06B02C23/40B03D101/02B03D101/04B03D101/06B03D103/02
CPCB03B9/06B03B7/00B09B3/00B09B5/00B03D1/018B03D3/06B02C23/40B03D2201/02B03D2201/04B03D2201/06B03D2201/002Y02W30/52Y02W30/60
Inventor 李伟光汪令辉杨航赵庆朝姚道春董世华苏卫宏盛欢古绪球惠林潘敏
Owner 铜陵有色金属集团股份有限公司
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