A kind of method for removing cobalt from zinc sulfate solution by synergistic deep purification
A zinc sulfate solution, deep purification technology, applied in the improvement of process efficiency, instruments, electrolysis components, etc., can solve the problems of long process and low cobalt removal depth, and achieve the effect of low cost and short process
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Embodiment 1
[0038] The present embodiment provides a method for cobalt removal from a zinc sulfate solution by synergistic deep purification. The xanthate 40mg / L was controlled at a temperature of 90°C and the reaction was stirred; the stirring speed was 300r / min, and the reaction time was 70min. Among them, the zinc sulfate solution contained cobalt 4.681mg / L, zinc 162.52g / L, cadmium 215.93mg / L, chlorine 89.54mg / L, copper 21.24mg / L, iron 0.12mg / L, and pH was 5.00.
[0039] After the reaction solution was separated by filtration, the Co content in it was measured. 2+ concentration. The experimental results show that when 40mg / L xanthate is added, the Co in the final zinc sulfate solution 2+ The concentration is 0.075mg / L.
Embodiment 2
[0051] This embodiment provides a method for cobalt removal from a zinc sulfate solution by synergistic deep purification. The xanthate 20mg / L was controlled at a temperature of 90°C and the reaction was stirred; the stirring speed was 300r / min, and the reaction time was 90min. Wherein, the zinc sulfate solution is the same as that of Example 1.
[0052] After the reaction solution was separated by filtration, the Co content in it was measured. 2+ concentration. The experimental results show that when 20mg / L xanthate is added, Co in the final zinc sulfate solution 2+ The concentration is 0.186mg / L.
Embodiment 3
[0060] This embodiment provides a method for cobalt removal from a zinc sulfate solution by synergistic deep purification. The xanthate 20mg / L was controlled to stir the reaction at a temperature of 90°C; the stirring speed was 300r / min, and the reaction time was 50min. Among them, the zinc sulfate solution contains 6.5 mg / L cobalt, 150 g / L zinc, 200 mg / L cadmium, 0 chlorine, 18 mg / L copper, 0 iron, and pH 5.00.
[0061] After the reaction solution was separated by filtration, the Co content in it was measured. 2+ concentration. The experimental results show that the Co in the final zinc sulfate solution 2+ The concentration is 0.119mg / L.
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