A recovery method of low-grade copper-sulfur ore containing secondary copper
A recovery method and low-grade technology, applied in chemical instruments and methods, wet separation, solid separation, etc., can solve problems such as equipment corrosion and consumption of beneficiation agents
Active Publication Date: 2022-03-08
中铁建铜冠投资有限公司 +1
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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
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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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The invention relates to a method for sorting copper sulfide ore, in particular to a method for recovering low-grade copper-sulfur ore containing secondary copper, comprising the following steps: S1. ore grinding; S2. mixed flotation; S3. Ore desliming; S4. Flotation coarse concentrate classification and regrinding; S5. Copper and sulfur separation flotation; S6. Sulfur mineral flotation. Among them, the grinding uses EDTA, water glass and sodium sulfide as a combined regulator in a ratio of 5:2:1; mixed flotation includes three flotations with butyl xanthate, Z‑200 as collectors, and F‑501 as collectors Frothing agent; copper-sulfur separation flotation includes two beneficiation and two sweeping, beneficiation and separation to obtain copper concentrate, and the middle ore products of beneficiation and sweeping are returned to classification for regrinding and recovery. The invention adopts a combination regulator, foaming agent and collector of specific components and proportions, and adopts the mode of return and regrinding of medium ore products, which improves the grade and recovery rate of copper and sulfur concentrates, and has broad application prospects.
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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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