Method and device for improving the grade of copper-selected copper

Abstract

The invention relates to a method and device capable of improving the copper grade in copper selection. The method comprises the steps that firstly, water is added into first copper coarse fine ore pulp, the concentration is controlled, sodium silicate, sodium hexametaphosphate and lime are added for adjustment, stirring is carried out, and second copper coarse fine ore pulp meeting the copper selection requirement is obtained through stirring; secondly, the second copper coarse fine ore pulp is subject to buffered accumulation and then is conveyed to a first copper selection groove to be selected, and first copper concentrate and first middlings are obtained; thirdly, the first copper concentrate is conveyed to a second copper selection groove to be selected, and copper concentrate and second middlings are obtained. The device comprises a frequency modulation stirring bucket, a buffer pond provided with an ultrasonic liquidometer and a submerged pump, a first partition board for dividing the copper selection groove into the first copper selection groove and the second copper selection groove, a middle box with a fixed cone valve, a second partition board dividing the copper selection groove into two parts, a first suction floating machine, a second suction floating machine and a direct-current floating machine. The method and device have the beneficial effects that the copper grade of copper concentrate is high, the concentration ratio of copper in copper concentrate is large, the sulfur copper ratio of the copper concentrate is small, the occupied area of the device is small, the investment is small, the construction difficulty is low, the method and device are easy to operate, and the economic benefit is obvious. The method and device are suitable for application of the ore dressing industry.

Description

technical field [0001] The invention relates to the technical field of mineral processing, in particular to a method and a device for improving the grade of copper-enriched copper, which are suitable for mineral processing applications. Background technique [0002] At present, in the ore flotation process at home and abroad, in order to avoid the process being too long and save space, the coarse concentrate often enters the beneficiation operation directly through the pipeline, and due to the needs of the production process, it must also be separated in the coarse concentrate slurry. Add various regulators to produce qualified concentrate. However, the following deficiencies generally exist in the traditional process: First, the beneficiation operation begins after the regulator is added to the coarse concentrate pulp. The effect is poor; second, after only one beneficiation, the concentrate grade is low, and the liquid level of the beneficiation operation is easily affect...

AI Technical Summary

Problems solved by technology

However, the following deficiencies generally exist in the traditional process: First, the beneficiation operation begins after the regulator is added to the coarse concentrate pulp. The effect is poor; second, after only one beneficiation, the concentrate grade is low, and the liquid level of the beneficiation operation is easily affected by the roughing operation. When the yield of coarse concentrate fluctuates, the liquid level of the beneficiation operation fluctuates accordingly, and the control is unstable

[0004] Chinese patent CN1895788 discloses a "mineral processing method that can improve concentrate grade and recovery rate". This method is based on the classic three-stage and one closed-circuit crushing process, adding an ultra-fine mill, that is, rolling crushing of the material layer Equipment, the particle size is controlled at about -5mm, and the process of more crushing and less grinding can be realized, which can improve the grinding efficiency and the dissociation degree of ore, but the shortcomings will greatly increase the crushing operation and maintenance costs, and at the same time affect the crushing capacity

[0005] Chinese patent CN103801460A discloses "a low-grade copper flotation process": the use of a new collector of copper and nickel and the process optimization of three roughings are conducive to the improvement of copper grade and recovery rate of copper concentrate. Activated carbon is used for physical drug removal and lime is used as nickel mineral inhibitor to separate copper and nickel, and the mutual content is serious

[0006] Chinese patent CN101428251 discloses a "method for improving the grade of molybdenum concentrate in the concentrating section": by changing part of the process flow in the concentrating section, increasing the enrichment ratio of concentrating III and concentrating IV ore pulp, prolonging the flotation time, for The improvement of the fine V flotation foam grade has laid the foundation, so as to achieve the purpose of improving the final concentrate grade. The shortcoming is that it does not explain that the concentrated IV tailings and the concentrated V tailings are returned to the concentrated III flotation column for stirring Barrel and Concentration III flotation foam, whether it affects the flotation of Concentration III and Concentration III froth classification and regrinding process, the control conditions are not explained and the increase in concentrate grade is not large

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