基于正交试验的高电流密度铜电解槽结构优化

Structure Optimization of High Current Density Copper Electrolysis Cell Based on Orthogonal Test

为减少高电流密度铜电解过程中阴极积瘤现象、降低残极率及提高电流效率,基于多物理场耦合理论与正交试验方法,研究了进液管半径、阳极板底部圆角半径及极间距对铜电解精炼效果的影响。单因素分析发现,随着进液管半径的增大或阳极圆角半径的增大,电流效率和阴极铜沉积厚度均匀性均呈现先增大后减小的趋势;随着极间距的增大,电流效率逐渐减小,阴极铜沉积厚度逐渐均匀。正交试验分析得出使铜电解精炼效果优异的电解槽结构参数为:进液管半径3.5 mm、阳极底部圆角4 mm、极间距110 mm。本研究可以为优化电解槽提高生产效率的研究提供理论指导。

In order to reduce the phenomenon of cathode nodules in the electrolytic process of copper Kunming University of Science and Technology with high current density,reduce the residual rate and improve the current efficiency,the influences of inlet tube radius,anode bottom fillet radius and electrode spacing on electrolytic refining of copper were studied based on multiple physical field coupling theory and orthogonal experiment method.Single factor analysis shows that the current efficiency and copper deposition uniformity increase first and then decrease with the increase of inlet pipe radius or anode fillet radius.With the increase of electrode spacing,the current efficiency drops and the thickness of copper deposition becomes uniform.Through orthogonal test analysis,theoptimum structural parameters of electrolytic cell with excellent copper electrolytic refining effect include inlet tube radius of 3.5 mm,anode bottom fillet of 4 mm,and pole spacing of 110 mm.This study can provide theoretical guidance for improving the production efficiency of electrolytic cell.