摘要
对硫酸镍电解液的萃取净化除杂进行了系统的研究。实验采用M5640对铜离子进行除杂,实验条件为:pH值为3.0,相比为1∶1,萃取剂体积浓度为15%,振荡时间5min,在此实验条件下铜离子的萃取率大于99.83%,其含量小于0.1mg·mL-1,已达到5N镍电解液标准。去除铜离子之后,采用P507对电解液进行除杂,在实验条件pH为4.0,相比为1∶1,萃取剂体积浓度为15%,振荡时间5min下,二价铁离子、锌离子、铅离子的萃取率分别为:99.93%,99.75%,84.01%,其含量分别为:<0.10,0.21,0.30mg·mL-1,已达到5N镍电解液标准。在此之后再采用P507对电解液中钴离子进行去除,实验条件为:用氢氧化钠溶液均相制皂75%,提高待萃液当中钴离子的含量至4.19g.L-1,即Co/Ni为1/10。实验采取四级萃取,控制水相pH值在4～5之间。钴离子萃取率为74.92%,含量为14.88mg·mL-1,已达到5N镍电解液标准。
The extraction of nickel sulphate electrolyte was studied.M5640 was used to remove Cu2+.The extraction rate was higher than 99.83% and the content of Cu2+ was lower than 0.1 mg·L-1 according to the experiment conditions.And the conditions were as follows:pH was 3.0,O/A was 1∶1,the volume concentration of M5640 was 15%,and the reaction time was 2 min.After Cu2+ was removed,P507 was used to remove other impurities,such as Fe2+,Zn2+,Pb2+.The contents of these impurities were removed lower than 0.10,0.21 and 0....
出处
《稀有金属》
EI
CAS
CSCD
北大核心
2010年第2期271-275,共5页
Chinese Journal of Rare Metals
基金
昆明理工大学校基金(KKZ3200927016)资助项目
