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研究了温度、电流密度和电解液pH值等对硫酸体系中Ni MnO2 同时电解过程的影响 ,通过正交试验确定了电解过程的最佳工艺条件为 :[Ni2 +] 90 g/L ;[Mn2 +] 30 g/L ;pH 3 5;90℃ ;电流密度 16 5A/m2 ;[H3 BO3 ] =15g/L ,槽电压 2 86V ,此时阴极电效为 99 88% ,阳极电效接近 10 0 % ,得到的阴极镍纯度为 99 87% ,阳极MnO2 品位为 87 85%。
The effects of temperature, current density and electrolyte pH value on the simultaneous electrolysis process of Ni-MnO2 in sulfuric acid system were studied. The optimum technological conditions for the electrolysis process were determined by orthogonal test: [Ni2 +] 90 g / L, [Mn2 +] 30 g / L; pH 3 5; 90 ℃; current density 16 5A / m2; [H3 BO3] = 15g / L; cell voltage is 2 86V; cathode efficiency is 99 88%; anode efficiency is close to 10 0%. The purity of the obtained cathode nickel was 99.87% and that of the anode MnO2 was 87.85%.