从人造金刚石酸洗废液中回收镍粉

研究了含镍酸洗废液的处理工艺和电解回收镍粉的方法，该方法处理人造金刚石酸洗废液不仅使排放废液达标(Ni2+] 0.8 mg/L，Co2+] 0.2 mg/L，Mn2+] 0.01 mg/L)，而且电解回收镍粉时，采用加入含镍离子的饱和离子交换树脂组成的两相电解液进行电解，能获得比在单相电解液中电解高的电流效率、稳定的阴极液组成和高的镍回收率.

Electrolytic Recovery of Nickel Powder from Acid-washing Solution Containing Nickel in Artificial Diamond Production

The treatment of acid-washing waste solution was investigated and a new method for electrolyticaly recovering nickel powder from the acid-washing waste solution containing nickel in artificial diamond production was developed. The results demonstrated that the new technique made the consistency of Ni2+, Co2+, Mn2+ in discharge liquor below 0.8, 0.2 and 0.01 mg/L, respectively, and that when the course of electrolyticaly recovering nickel powder was performed in two phase multiple electrolyte with additives and saturated cationic-exchange resin containing nickel ion, high electrolytic efficiency, high stability of composition of cathode electrolyte and high recovery efficiency of nickel could be achieved, in contrast with electrolysis in single phase electrolyte.