A method for treating antimony-containing sulfide ore

Abstract

The invention discloses a method for treating antimony-bearing sulphide ore. The method comprises the steps that antimony-bearing sulphide ore slurry in the diluted hydrochloric acid system is placed in a slurry tank, a mechanical stirring paddle is arranged in the slurry tank, and the slurry is in a uniformly mixed state; and the slurry enters a swirling electrolysis system at a certain speed through a pneumatic pump, after being electrolyzed, the slurry is discharged from an electrolysis device and continuously enters the slurry tank, and antimony in ore is efficiently extracted after a certain time through the circulation, wherein the technological conditions are that the concentration of diluted hydrochloric acid in the slurry is 110 g / L to 180 g / L, the temperature is 55 DEG C to 85 DEG C, the liquid-solid ratio is (6-12) to 1, and the density of a cathode current is 100 A / m<2> to 200 A / m<2>. According to the method, process is short, reaction speed is high, mass transfer during the reaction process is uniform, and compared with a traditional method, the recovery rate of antimony is greatly increased, antimony in ore is comprehensively and efficiently extracted, and the utilization rate of antimony resources is increased.

Description

technical field [0001] The invention relates to the technical field of non-ferrous metal hydrometallurgy, in particular to a method for directly treating antimony-containing sulfide ores by cyclone electrolytic leaching. Background technique [0002] Antimony sulfide ore smelting methods include fire method and wet method. [0003] Antimony smelting by fire method is mainly volatilization roasting (smelting)-reduction smelting method, that is, antimony trioxide is produced first, and then crude antimony is produced by reduction smelting; in addition, high-grade antimony ore is also used to directly produce crude antimony by iron precipitation smelting. Fire antimony smelting also has disadvantages such as long process, many returned materials, low direct metal recovery rate, high processing cost, etc., and the operating environment is poor, which is easy to generate SO 2 And arsenic pollution, affecting the technical and economic indicators of smelting. [0004] The wet pr...

AI Technical Summary

Problems solved by technology

[0008] 1. The whole process is carried out in a single tank, and the mass transfer process is not sufficient. As the reaction progresses, a "pulp depletion zone" will appear, which will affect the progress of the reaction;

[0009] 2. The reaction speed is slow and the efficiency is low, so the power consumption is relatively large;

[0010] 3. It is inconvenient to replace the electrolyte and slurry, and the operation is difficult

However, its research and application are mainly concentrated in the purification stage, that is, metal ions are deposited by the reduction of the cathode in the electrolysis process to achieve purification and purification. However, there is still no research case for the strong oxidation of the anode at this stage.

And in the treatment of mineral slurry, there is still no precedent for using cyclone electrolysis

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