离子膜电解法电沉积回收硫酸镍体系中金属镍的实验研究  

Experimental Study of Ion-exchange Membrane Electrolysis Nickel Sulfate Electrowinning of Nickel Metal System

作　　者：李韬[1,2] 王三反[1,2] 周键[1,2] 

机构地区：[1]兰州交通大学环境与市政工程学院,兰州730070 [2]寒旱地区水资源综合利用教育部工程中心,兰州730070

出　　处：《材料导报（纳米与新材料专辑）》2016年第2期432-435,439,共5页

基　　金：国家科技支撑计划课题(2015BAE04B01);国家自然科学基金(21466019);兰州交通大学校青年基金(2015016)

摘　　要：以H2SO4/NiSO4作为研究对象,采用离子膜电积技术提取金属镍。研究Ni^(2+)浓度、电流密度、温度、添加剂等因素对膜电积效果的影响。结果表明:在Ni^(2+)浓度50g/L、硼酸浓度20g/L、pH=4.9、温度50℃、电流密度350A/m2、极间距30mm、1,4-丁炔二醇0.2g/L的条件下,阴极电流效率达89.87%,酸回收率为62.05%,电积能耗为6587kW·h/t。It regards H2SO4/NiSO4 as the research object, using ion exchange membrane electrowinning tech nology to extract the metal nickel. The effects of Ni2＋ concentration, current density, temperature and additives on the film deposition were studied. The results showed that： in Ni2＋ concentration of 50 g/L,the concentration of boric acid 20 g/L,pH=4. 9, temperature 50 ℃, current density of 350 A/m2, pole spacing 30 mm, 1,4 butynediol under 0. 2 g/L condition, cathodic current efficiency was 89. 87%, acid recovery was 62. 05%, the electrical energy con- sumption of the product was 6587 kW ·h/t.

关 键 词：硫酸镍体系 膜电积 工艺参数 电流效率 酸回收率 

分 类 号：TF839[冶金工程—有色金属冶金]