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Method for beneficiation and separation of copper-zinc sulfide ore

A sulfide ore, copper-zinc technology, applied in the field of mineral processing, can solve problems such as long process flow, high grinding cost, loss of metal resources, etc., achieve the effect of reducing costs, reducing metal loss, and improving overall economic benefits

Active Publication Date: 2021-05-28
HUNAN RES INST FOR NONFERROUS METALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the purpose of the present invention is to provide a method for beneficiation and separation of copper-zinc sulfide ore, which overcomes the serious loss of metal resources, long process flow, and grinding cost in the traditional copper-zinc separation process of using the copper-floating zinc suppression process. For high-level defects, the separation of copper-zinc sulfide ores is realized by using flotation columns to reselect different sulfide ores, and copper sulfate is used to increase the floating rate of sphalerite to achieve the purpose of floating zinc and suppressing copper, thereby improving the efficiency of copper-zinc beneficiation and separation

Method used

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  • Method for beneficiation and separation of copper-zinc sulfide ore
  • Method for beneficiation and separation of copper-zinc sulfide ore

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Embodiment 1

[0042] A copper-zinc sulfide mine in Yunnan is a typical copper-zinc mineral fine-grained disseminated low-grade copper-zinc mine. In the raw ore produced by the mine, copper mainly occurs in the form of primary copper sulfide (chalcopyrite), with a distribution rate of 90.45%. Zinc mainly occurs in the form of primary zinc sulfide (sphalerite), with a distribution rate of 95.65%. In addition to chalcopyrite and sphalerite, it also contains a small amount of pyrite, accounting for 4.3% of the total mineral content. The gangue minerals are mainly quartz, and contain some calcite mica minerals. Chalcopyrite and sphalerite in the ore are The fine particles are embedded, and part of them are interspersed in the fissures of pyrite in a mutually wrapped state.

[0043] Table 1 ore chemical multi-element analysis results / %

[0044] components Cu Zn Pb Fe As S content 0.36 1.89 0.02 3.12 <0.01

3.19 components SiO 2

Al 2 o 3

MgO ...

Embodiment 2

[0056] A low-grade copper-zinc sulfide ore in Inner Mongolia contains 0.14% Cu and 0.44% Zn. figure 1 The process shown treats the mine's raw ore.

[0057] (1) After the raw ore is ground and classified, the selected fineness is -0.074mm, which accounts for 70% of the raw ore pulp. The raw ore pulp is flotation in the flotation machine, and ethylthiocarbamate is added in the flotation process, and the consumption is 60g / t, to obtain copper-zinc mixed concentrate and mixed floating tailings;

[0058] (2) The copper-zinc mixed concentrate is processed by the vertical mill, and the particle size of the vertical mill overflow product is controlled to be -0.039mm, accounting for 85%. 80g / t acetic acid until the pH of the pulp reaches 5, and add 600g / t copper sulfate and 120g / t MIBC, after stirring, the pulp is sent to the total micro-bubble flotation column, and the air volume of the flotation column is controlled to be 0.5m 3 / h, the height of the foam layer is 25cm, the foam c...

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Abstract

The invention relates to a method for beneficiation and separation of copper-zinc sulfide ore, and belongs to the field of mineral processing. The method specifically comprises the following steps that grinding classification and bulk flotation are carried out on ore containing the copper-zinc sulfide ore to obtain copper-zinc bulk concentrate; and the copper-zinc bulk concentrate is subjected to treatment of a vertical stirring mill, bulk concentrate ore pulp after the treatment of the vertical stirring mill is subjected to dense dehydration treatment, dense overflow returns to the copper-zinc bulk roughing step, dense underflow is subjected to size mixing and stirring, and the materials subjected to size mixing are conveyed to a flotation column to be subjected to aerated flotation, so that the purpose of separating sphalerite from other minerals in the copper-zinc bulk concentrate is achieved. Compared with a traditional floating copper zinc inhibition process, the method has the advantages of being short in flow, few in chemical varieties, low in concentrate product mutual content and the like, and thus the method has wide industrial application prospects.

Description

technical field [0001] The invention relates to the field of mineral processing, and specifically provides a method for dressing and separating copper-zinc sulfide ores. Background technique [0002] Copper-zinc sulfide ores are mostly produced in hydrothermal filling metasomatism and skarn deposits. Due to the unique rock-forming mineralization of this type of deposit, the ore structure of common copper-zinc sulfide deposits at home and abroad The structure and structure are extremely complex, and some ores present fine-grained chalcopyrite and sphalerite, which are interlaced in veinlets, interwoven veins, or wrapped in the pyrite grains or cracks, resulting in the copper-zinc in this type of ore. The dissociation and flotation separation of mineral monomers are extremely difficult. At the same time, during the ore crushing process, due to the breakage of the mineral lattice bonds, the Cu in the mineral lattices 2+ Released in the pulp solution, copper ions have a strong ...

Claims

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Application Information

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IPC IPC(8): B03B9/00B03D1/02B03D1/08
CPCB03B9/00B03D1/02B03D1/08Y02W30/52
Inventor 肖骏陈代雄董艳红杨建文蔡冰冰胡波曾惠明
Owner HUNAN RES INST FOR NONFERROUS METALS
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