Dressing-metallurgy combined method for treating ultra-fine copper sulfide ore

A combined technology of copper sulfide ore, dressing and metallurgy, applied in chemical instruments and methods, grain processing, flotation, etc., can solve the problems of poor recovery index, difficult dissociation of fine particles, easy overgrinding, etc., and achieves high leaching index, Improve flotation recovery rate and avoid overgrinding effect

Inactive Publication Date: 2019-11-15
厦门紫金矿冶技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the deficiencies of the prior art, the present invention aims to provide a combined dressing and smelting method for processing fine-grained copper sulfide ore, which can solve the problems of difficult dissociation, easy over-grinding, and The problem of poor recovery index, eliminate the impact of the sequence return of middling ore slime on the test index, improve the recovery index of low-grade difficult-to-separate middling ore, reduce the loss rate of useful minerals, and improve the comprehensive utilization rate of resources

Method used

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  • Dressing-metallurgy combined method for treating ultra-fine copper sulfide ore
  • Dressing-metallurgy combined method for treating ultra-fine copper sulfide ore
  • Dressing-metallurgy combined method for treating ultra-fine copper sulfide ore

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Embodiment 1

[0030] A combined dressing and metallurgy method for processing fine-grained copper sulfide ore, such as figure 1 shown, including the following steps:

[0031] S1. Add the raw ore to the rod mill to grind the ore until the fineness is -74 μm, accounting for 80-85%. 3-5 minutes before the grinding time arrives, add the collector isobutyl xanthate potassium ( Produced by SENMIN (Pty) Ltd), based on the dry weight of raw ore, add 120-150g of collector per ton of raw ore;

[0032] S2, the grinding product obtained by grinding in step S1 is fed into the flotation machine, the pulp concentration of the grinding product is adjusted to 25-30%, and the foaming agent SF522 (produced by SENMIN (Pty) Ltd) is added to the flotation machine. The full name is SENFROTH522), according to the dry weight of raw ore, 50-70g of foaming agent is added per ton of raw ore; roughing operation is carried out for 3-5 minutes to obtain copper rough concentrate and roughing tailings;

[0033] S3. Adjus...

Embodiment 2

[0044] In a large-scale foreign copper mine, the copper minerals are mainly copper sulfide minerals such as chalcopyrite and chalcopyrite, and the raw ore contains 6.05% copper. The distribution of the target minerals is fine and uneven, and a single flotation process is adopted It is difficult to obtain a better test beneficiation index. Adopt the method described in embodiment 1 to process in the present embodiment, concrete steps include:

[0045] According to the dry weight of each ton of raw ore, take a certain amount of raw ore and add it to the rod mill for grinding until the fineness is -74μm, accounting for 85%. 5 minutes before the grinding time, add 150g / t of collector isobutyl into the mill Potassium xanthate base; feed the grinding product into the flotation machine, adjust the pulp concentration to 30%, add 70g / t SF522 to the flotation machine, and perform roughing operation for 3 minutes to obtain copper coarse concentrate. Copper coarse concentrate is obtained...

Embodiment 3

[0048] In a large copper mine in Qinghai, the copper minerals are mainly copper sulfide minerals such as chalcopyrite and copper blue. The raw ore contains 2.74% copper, and the target minerals are distributed with fine particle size. Adopt the method described in embodiment 1 to process in the present embodiment, concrete steps include:

[0049] According to the dry weight of each ton of raw ore, take a certain amount of raw ore and add it to the rod mill for grinding until the fineness is -74μm, accounting for 80%. 5 minutes before the grinding time, add 150g / t isobutyl xanthogen to the mill Potassium acid; put the grinding product into the flotation machine, adjust the pulp concentration to 30%, add 70g / t SF522 to the flotation machine, and carry out roughing operation for 3 minutes to obtain copper rough concentrate, which is passed through a blank High-grade copper concentrate No. 1 and medium ore No. 1 were obtained from the quick selection operation, and the slurry conc...

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Abstract

The invention discloses a dressing-metallurgy combined method for treating ultra-fine copper sulfide ore. The method comprises the following steps: performing ore grinding on crude ore, adding a collecting agent, adding a foaming agent, performing rough sizing, performing a section of blank quick fine sizing operation on the copper rough concentrate obtained through rough sizing so as to obtain high-grade copper concentrate No. 1 and middling No. 1, perform scavenging operation on the rough tailings obtained through rough sizing so as to obtain tailings No. 1 and middling No. 2, merging the middling No. 1 and middling No. 2, performing ultra-fine grinding so as to obtain an ultra-fine ground product, adding a gangue inhibitor in the ultra-fine grinding process, adding the collecting agentand foaming agent to the ultra-fine ground product, performing ultra-fine grinding rough sizing operation, performing blank and fine sizing on the obtained ultra-fine ground rough-sized concentrate soas to obtain low-grade copper concentrate No. 2 and middling No. 3, performing scavenging operation on the ultra-fine ground rough-sized tailings so as to to obtain tailings No. 2 and middling No. 4,merging the middling No. 3 and the middling No. 4, performing biological stirring leaching, and performing extraction electrodeposition on the leachate so as to obtain a cathode copper. The comprehensive utilization rate of resources can be improved effectively.

Description

technical field [0001] The invention relates to the technical field of mineral processing, in particular to a combined dressing and smelting method for treating fine-grained copper sulfide ore. Background technique [0002] Flotation is a commonly used beneficiation method for processing copper sulfide ore, which has a wide range of applications and low reagent cost. However, for copper sulfide ores embedded with fine particles, the index of copper recovery by single flotation method is usually poor. Copper sulfide ores embedded with micro-fine particles, especially copper sulfide ores with uneven distribution of thickness, generally adopt the process of stage grinding, and for copper sulfide ores with coarser particle size, coarse grinding and conventional flotation process are adopted. To recover copper minerals, this method requires multiple beneficiation to obtain high-grade copper concentrate. For copper minerals with a fine particle size, even less than 10 μm, even i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/02B03B7/00B03B1/00B03B9/00B02C25/00C22B3/18C22B15/00B03D103/04B03D101/02B03D101/04
CPCB02C25/00B03B1/00B03B7/00B03B9/00B03D1/02B03D2201/02B03D2201/04B03D2203/04C22B3/18C22B15/00Y02P10/20
Inventor 魏转花陈水波伍赠玲李国尧黄雄
Owner 厦门紫金矿冶技术有限公司
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