Study On The Influence Of Polar Distance On Copper Electrolysis Physical Field And Starting Sheet Deformation

With the "thirteen five" plan put forward and implemented,today’s industrial demand for electrolytic refined copper continues to increase.It becomes an problem for all smelting companies that how to ensure the production of refined copper under the premise of reducing power consumption、reduce the defect rate and solve the problem such as electrode short circuit,which occurs during the process of electrolytic for the copper starting sheet deformation.At present,in order to increase the output of refined copper,some of the traditional domestic copper electrolytic smelter uses smaller electrolysis pole spacing.However,in order to avoid electrode short circuit problem and other issues for the improper selection of electrolysis pole spacing during the electrolysis process,resulting in too large copper starting sheet deformation,after the first cycle of electrolysis the copper starting sheet must be calibrated by artificial overhanging,which not only reduces the production efficiency but also increases the labor intensity of workers.If we can achieve a reasonable value of the pole spacing,and analyze the copper starting sheet deformation in the first cycle of the electrolysis process and change in the different physical field,it will be greatly important for copper primary unit shaping and the latter part of the copper starting sheet overhanging leveling,and it also will provide help for improving the production and quality of cathode copper.In this paper,based on the domestic and foreign research,the traditional copper electrolysis pole spacing parameters of a smelter is taken as the research object,and the tradition copper electrolysis is alanalyzed by flow field,electric field,magnetic field,solid mechanics and temperature field physical field.By changing the value of pole spacing,the analysis research of various physical fields vector change and the copper starting sheet deformation under different pole spacing were achieved,and finally the ideal value of pole spacing was determined.In this process,the operating parameters such as slot voltage,current density and inlet flow rate were analyzed and calculated,and the physical parameters such as average thickness,Poisson’s ratio and elastic modulus of the copper initial stage were measured,which provide necessary parameters for establishing the model.The COMSOL multi-physics analysis software was used to analyze the model to realize the quadratic optimization of the simulation model.The changes of the physical field and the copper starting sheet deformation in the electrolysis cell after the first period of electrolysis under different pole spacing were compared and analyzed,and the deformation and distribution of the copper starting sheet in the simulation were verified by the groove surface experiment.It found that the different pole spacing will directly affect the numerical size and distribution of the physical field in the electrolysis process,and it also has some influence on the copper starting sheet deformation,but the deformation of the copper starting sheet as a whole shows the center of the bottom edge with large deformation and other characteristics.Finally the pole spacing under the ideal situation was 84.23mm through the regression analysis and calculation of the pole pitch.