铜电解液电积脱铜制备高纯阴极铜

Preparation of High-purity Cathode Copper by Electrodeposition Removal of Copper from Copper Electrolyte

利用电积法制备高纯阴极铜,研究了添加剂、电解液温度、电流密度以及Cu2+浓度对电积法脱铜制备高纯阴极铜质量的影响。当添加剂(骨胶:明胶:硫脲质量比为6∶4∶5)用量为40 mg/L,电解液温度为55℃,电流密度为200 A/m2,电解液中Cu2+浓度从48.78 g/L降至31.71 g/L时,电积脱铜得到的阴极铜质量达到了高纯阴极铜标准(GB/T 467-1997);其电流效率达到99.19%,高纯阴极铜产率达到38.09%。电积脱铜制备高纯阴极铜不仅增加了阴极铜产量,而且可大大减少电积时黑铜板和黑铜粉。

Investigations were carried out on the influences of additives, electrolytic temperature, current density and Cu^2＋ concentration on the quality of the high-purity cathode copper prepared by electrodeposition decoppering. Under the following conditions such as additive（with mass ratio of bone glue： gelatin： thiourea of 6： 4：5 ） dosage of 40 rag/L, electrolytic temperature of 55℃, current density of 200 A/m2 and Cu^2＋ concentration in the electrolyte down from 48.78 g/L to 31.71 g/L, the quality of the prepared cathode copper reaches to the Chinese standard （GB/T467-1997） for high-purity cathode copper. The current efficiency is up to 99. 19%. The yield of high-purity cathode copper is 38.09%. Not only the yield of cathode copper can be raised but also black copper board and black copper powder can be reduced when high-purity cathode conner is prepared bv electrodenosition decoppering.