Effect of Vortex Stirring on the Dilution of Copper Slag

Abstract

In order to solve the problem that the vulcanizing agent utilization rate is low and the dilution effect of copper slag is poor, the vortex stirring dilution method was used to improve the conditions of the dilution kinetics and copper recovery. The water model was used to simulate the effect of copper slag dilution. Under the premise of keeping the Reynolds number consistent, silicone oil and glass beads were used instead of copper slag and vulcanizing agent. Based on the relationship between voltage and concentration, the PC6D dual-channel particle concentration measuring instrument was used to study the stirring speed and the insertion depth of the stirring paddle in model experiments, and the suitable conditions were speed 250 rpm and insertion depth 70 mm. The fire dilution of copper slag was done under the conditions. After stirring and sedimentation, the Fe₃O₄ in slag decreased from 22.58% to 4.65%, and the copper content of the slag decreased from 2.94% to 0.34%. The copper recovery was 88.44%.

Keywords

copper slag dilution / vortex stirring / water model / the PC6D dual-channel particle concentration measuring instrument

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