Flotation method for copper sulphide ore

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...

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.

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