Method for recovering low-grade copper-sulfur ore containing secondary copper

A recovery method and low-grade technology, which can be used in chemical instruments and methods, wet separation, solid separation, etc., and can solve problems such as consumption of mineral processing agents and equipment corrosion.

Active Publication Date: 2020-11-17
中铁建铜冠投资有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The disadvantage of this patent is the addition of iron powder, iron powder and Cu 2+ The reaction produces Fe 2+ , resulting in the introduction of new metal Fe in the slurry 2+ , Fe 2+ It not only consumes a large amount of beneficiation chemicals, but also causes corrosion to the equipment

Method used

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  • Method for recovering low-grade copper-sulfur ore containing secondary copper
  • Method for recovering low-grade copper-sulfur ore containing secondary copper

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Embodiment 1

[0031] The copper-sulfur ore mined in an open-pit mine, the main property of the ore in the surface layer is mainly kaolin, and the secondary copper sulfide content is as high as 41.29%. The secondary copper sulfide is in the process of crushing and grinding. Easy to oxidize and produce a large amount of copper ions. Copper ions not only consume chemicals, but also activate pyrite, which increases the difficulty of copper-sulfur separation and affects the separation effect of copper-sulfur. The free copper oxide content is up to 22.13%, which affects the improvement of copper recovery rate. .

[0032] The composition analysis of a certain batch of minerals in the raw ore of the open-pit mine is shown in Table 1.

[0033] Table 1 Analysis results of raw ore copper

[0034] farewell native copper sulfide secondary copper sulfide free copper oxide bound copper oxide Cu grade Copper content / % 0.229 0.252 0.083 0.046 0.61 Occupancy / % 37.58 41.2...

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Abstract

The invention relates to a separation method of copper sulfide ore, in particular to a method for recovering low-grade copper-sulfur ore containing secondary copper. The method comprises the followingsteps: S1, ore grinding; S2, bulk flotation; S3, desliming of rough concentrate; S4, grading and regrinding of floated rough concentrate; S5, copper-sulfur separation flotation; and S6, sulfur mineral flotation, wherein a combined regulator prepared from EDTA (Ethylene Diamine Tetraacetic Acid), sodium silicate and sodium sulfide in a ratio of 5:2:1 is used for ore grinding; the bulk flotation comprises three times of flotation, butyl xanthate and Z200 are adopted as a collecting agent, and F501 is adopted as a foaming agent; and the copper-sulfur separation flotation comprises two times of concentration and two times of scavenging, copper concentrate is obtained through concentration separation, and middling products obtained through concentration and scavenging are returned, graded, reground and recycled. According to the method, the combined regulator, the foaming agent and the collecting agent with specific components and proportions are adopted, and a middling product returning and regrinding mode is adopted, so that the grade and the recovery rate of copper and sulfur concentrates are improved, and the application prospect is wide.

Description

technical field [0001] The invention relates to a method for sorting copper sulfide ore, in particular to a method for flotation of easy-mud, high-secondary copper and low-grade copper-sulfur ore. [0002] technical background [0003] With the development of society, people's demand for copper metal is increasing day by day, and the copper ore resources are becoming more and more poor and fine. Increasing the sorting and recycling of complex and refractory copper minerals has extensive economic and social benefits. [0004] Separation of low-grade copper-sulfur ore that is easy to muddy, high secondary copper, and low-grade copper-sulfur ore has been a technical problem faced by mineral processing workers at home and abroad for many years. There are three main reasons for this. One is that mines, especially open-pit mines, contain Minerals such as kaolin and chlorite are prone to muddying in the process of crushing and grinding. The slime is not only easy to cover the surfac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B1/00B03B7/00B03B9/00B03D1/012B03D1/018B03D1/002B03D1/02B03D101/02B03D101/04
CPCB03B1/00B03B7/00B03B9/00B03D1/012B03D1/018B03D1/002B03D1/02B03D2201/007B03D2201/04B03D2201/02
Inventor 胡建东李冬朱学胜代献仁陶如兵李世男黄程张星凯宋崇耀钱龙
Owner 中铁建铜冠投资有限公司
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