Flotation method for copper sulphide ore

A copper sulfide and ore technology, applied in the metallurgical field, can solve the problems of only 34.20% recovery rate, clogging of tailings conveying pipe, low indicators and low efficiency, achieving strong guiding significance and reference value, reducing the amount of regrinding, economical Significant effect

Inactive Publication Date: 2013-11-13
CHINA NERIN ENG
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  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the traditional copper sulfide ore flotation method, when the raw ore copper grade is 1.49% and the sulfur grade is 17.58%, the copper concentrate grade is 18.01% and the recovery rate is 73.98%; the sulfur concentrate grade is 36.56% and the recovery rate is only 34.20%
And the dosage of chemicals is large, especially the dosage of lime is as high as 18.01kg / t, which causes scaling on the wall of the tailings conveying pipe, which makes the tailings conveying pipe often blocked, affecting normal production, and the investment and cost are high, and the indicators and benefits are low
[0003] Therefore, the current copper sulfide ore flotation method still needs to be improved.

Method used

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  • Flotation method for copper sulphide ore
  • Flotation method for copper sulphide ore
  • Flotation method for copper sulphide ore

Examples

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Embodiment 1

[0032] (1) Utilize the flotation method of copper sulfide ore of the present invention (also referred to as technique of the present invention sometimes herein) to carry out copper sulfide ore flotation:

[0033] Firstly, the raw ore with a block size of less than 1000mm is transported from the mining field to the raw ore warehouse of the rough crushing workshop of the concentrator, and is crushed by a jaw crusher (PEJ-1215, NHI Group Co., Ltd.) to reduce the maximum block size to 350mm Next, use a wet semi-autogenous mill (φ6.4×3.3, NHI Group Co., Ltd.) and a wet overflow ball mill (φ4.8×7.0, NHI Group Co., Ltd.) to crush the coarsely crushed copper ore Grinding is carried out to prepare pulp.

[0034] Then use the cyclone group (FX660-GT×7, Weihai Haiwang Cyclone Co., Ltd.) to classify the pulp to obtain the overflow pulp with a concentration of 30% and a particle size of -200 mesh 65%. pH = 8) and add butyl ammonium black drug into the optimal roughing flotation machine (K...

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Abstract

The invention relates to a flotation method for copper sulphide ore. The method comprises the following steps of (1) performing primary grinding on the copper sulphide ore so as to obtain a primary grinding product; (2) performing first flotation on the primary grinding product by utilizing a first trapping agent so as to obtain a monomer copper mineral and secondary copper-rich mineral intergrowth-contained first flotation product and first flotation residues; (3) performing second flotation on the first flotation residues by utilizing a second trapping agent so as to obtain copper-poor intergrowth, complex copper mineral and free sulfur-contained a second flotation product and second flotation tailings; (4) performing secondary grinding on the second flotation product so as to obtain a secondary grinding product; and (5) performing copper-sulfur separation on the secondary grinding product in a strong caustic environment so as to obtain copper concentrate and sulfur concentrate. By utilizing the flotation method for the copper sulphide ore provided by the invention, copper-sulfur flotation can be effectively performed on the complex and refractory copper sulphide ore.

Description

technical field [0001] The present invention relates to the field of metallurgy, especially, the present invention relates to a kind of flotation method of copper sulfide ore, more specifically, the present invention relates to a kind of complex refractory copper sulfide ore's preferential fast copper floating, mixed beneficiation and regrinding Copper-sulfur flotation process. Background technique [0002] In the traditional copper sulfide ore flotation method, when the raw ore copper grade is 1.49% and the sulfur grade is 17.58%, the copper concentrate grade is 18.01% and the recovery rate is 73.98%; the sulfur concentrate grade is 36.56% and the recovery rate is only There are 34.20%. And the dosage of chemicals is large, especially the dosage of lime is as high as 18.01kg / t, which causes scaling on the wall of the tailings conveying pipe, which makes the tailings conveying pipe often blocked, affecting normal production, and the investment and cost are high, and the ind...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B7/00B03B1/00
Inventor 王莉萌张红华喻贵芳袁国才吴启明范小雄
Owner CHINA NERIN ENG
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