Beneficiation separation method for copper-zinc sulfide ore with high copper-zinc ratio

Abstract

The invention discloses a beneficiation separation method for copper-zinc sulfide ore with a high copper-zinc ratio, which comprises the following steps: by taking copper-zinc sulfide raw ore with the high copper-zinc ratio as a raw material, mixing the copper-zinc sulfide raw ore with the high copper-zinc ratio with slaked lime and aniline black to prepare a first inhibitor, a first collecting agent and water to prepare raw ore pulp; carrying out primary flotation separation on the raw ore pulp to obtain first copper-zinc bulk concentrate and mixed tailings, and carrying out magnetic separation on the first copper-zinc bulk concentrate in an environment with magnetic field intensity of 1.3 T to obtain second copper-zinc bulk concentrate and product first copper concentrate; and thickening the second copper-zinc bulk concentrate, and carrying out secondary flotation on the thick underflow to obtain second copper concentrate and second zinc concentrate. According to the beneficiation separation method, the copper-zinc sulfide raw ore with the high copper-zinc ratio can be effectively separated, the separation process is simple, the types of agents needing to be added are reduced, and the dosage of the agents is also greatly reduced; the zinc content in the copper concentrate product is low, the copper content in the zinc concentrate product is low, the zinc recovery rate is increased, and the product quality is also effectively improved.

Description

technical field [0001] The invention relates to the field of mineral processing, and specifically provides a method for beneficiation and separation of copper-zinc sulfide ores with a high copper-to-zinc ratio. Background technique [0002] The copper-zinc mixed concentrate is mostly produced in the process of beneficiation and treatment of copper-containing zinc sulfide ore, that is, the copper-zinc sulfide ore is obtained through copper-zinc mixed flotation to obtain a mixed concentrate product, and then the mixed concentrate is separated and processed to obtain a smelting standard. of copper and zinc concentrates. During the grinding and dissociation process of copper-zinc ore, free copper ions in the crystal lattice of copper-zinc ore enter into the slurry, resulting in a significant increase in the floatability of zinc minerals in the copper-zinc mixed concentrate. Therefore, the current separation of copper-zinc mixed concentrate In the process, there are common probl...

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Problems solved by technology

In addition, the use of magnetic separation-flotation combined process is also one of the methods to improve the separation efficiency of copper-zinc mixed concentrate. Patent CN201610913241.4 provides a magnetic flotation combined beneficiation process for the separation of copper-zinc sulfide ore. The combined process uses The copper-zinc mixed concentrate after copper sulfate activation is used as the object, and the copper concentrate and zinc concentrate are obtained after regrinding-strong magnetic roughing and beneficiation treatment. Although this invention patent partially solves the difficulty of copper-zinc separation, However, for the beneficiation of copper-zinc sulfide ore with a high copper-zinc ratio, due to the high copper content and the complex form of copper, the copper magnetic susceptibility of each form is widely distributed, the magnetic separation process is difficult, and zinc loss in the copper concentrate is inevitable. Defects of too high ratio and too high copper content in zinc concentrate

[0005] In order to solve the current problems such as low flotation separation efficiency, complicated separation process, high cost of reagents, and great impact on the environment for copper-zinc ores with high copper-zinc ratios, a new mineral separation process suitable for copper-zinc sulfide ores with high copper-zinc ratios has been developed. method is necessary

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