一、前言在采用高电流密度的铜电解精炼生产中,使用传统的直流电解方法,不仅影响阴极和阳极过程,而且也影响电解液。固定阳极成分而提高电流密度,就意味着增加阴极和阳极的过电压,提高电解液中金属离子的浓度,首先是铜、镍、砷和铁离子的浓度。 I. Introduction In the production of copper electrolytic refining with high current density, the traditional DC electrolysis method not only affects the cathode and anode processes, but also affects the electrolyte. Fixing the anode composition while increasing the current density means increasing the cathode and anode overvoltages and increasing the concentration of metal ions in the electrolyte, above all the concentrations of copper, nickel, arsenic and iron ions.