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在铜电解精炼过程中,用氯离子做添加剂的主要目的,是沉淀电解液中的银离子,使其富集在阳极泥中,避免沾污阴极和减少贵金属银的损失。电解液中 Cl~-的适当含量,根据长期实际操作数据指出,经常保持电解液中含 Cl~-为0.02克/竔左右,Cl~-含量过高时,会导致不正常现象产生。含量正常时,产品电铜是淡红色的;但当电解液含 Cl~-大于0.030克/竔时,产品电铜开始发黑,其发黑
In the copper electrolytic refining process, the main purpose of using chloride ion as an additive is to precipitate the silver ions in the electrolyte to enrich the anode mud, avoid staining the cathode and reduce the loss of precious metal silver. The appropriate content of Cl ~ - in the electrolyte, according to the long-term actual operating data indicates that often containing Cl ~ - in the electrolyte is about 0.02g / 竔, Cl ~ - content is too high, it will lead to abnormal phenomenon. When the content is normal, the product copper is light red; but when the electrolyte containing Cl ~ - greater than 0.030 g / 竔, the product began to black copper, black