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研究了在硫酸锌和硫酸锰酸性溶液中,同时电积锌和二氧化锰的可能性。探索了电流密度、温度、锰含量等条件对阴、阳极电流效率的影响。发现温度越高、电流密度越低,则阳极电流效率越高,锰含量在1.2M时最佳。电流密度越高,阴极电流效率也越高,但温度对其影响不显著。在温度75℃,电流密度10mA/cm~2,电解液组成:Zn50g/l,MnSO_41.2M、H_2SO_40.5M,胶50mg/l,阴极用铝,阳极用铅的条件下,阴极和阳极电流效率分别可达91％和79％。MnO_2为γ型。此外,还测定了阳极极化曲线,对氧和二氧化锰的析出规律进行了讨论。
The possibility of simultaneously electrowinning zinc and manganese dioxide in acidic solutions of zinc sulfate and manganese sulfate was studied. The current density, temperature, manganese content and other conditions on the anode and cathode current efficiency were explored. It is found that the higher the temperature, the lower the current density, the higher the anode current efficiency and the best manganese content at 1.2M. The higher the current density, the higher the cathode current efficiency, but the temperature has no significant effect on it. At current temperature of 75 ℃, the current density was 10mA / cm ~ 2, the electrolyte consisted of Zn50g / l, MnSO_41.2M, H_2SO_40.5M, glue 50mg / l, cathode aluminum and anode lead. Up to 91% and 79% respectively. MnO 2 is γ type. In addition, the anodic polarization curves were also measured, and the rules for the precipitation of oxygen and manganese dioxide were discussed.