采用阴离子膜电解法从红土镍矿常压浸出液中制备金属镍  

Preparation of Ni from nickel laterite leaching solution by anion membrane electrolysis method

作　　者：孟龙[1,2,3] 曲景奎[2,3] 谢克强[1] 张培育[2,3] 韩林芯[2,3] 郭强[2,3] 齐涛[2,3] 张国之 

机构地区：[1]昆明理工大学冶金与能源工程学院,昆明650093 [2]中国科学院过程工程研究所湿法冶金清洁生产技术国家工程实验室,北京100190 [3]中国科学院过程工程研究所绿色过程与工程重点实验室,北京100190

出　　处：《中国有色金属学报》2015年第4期1093-1102,共10页The Chinese Journal of Nonferrous Metals

基　　金：国家杰出青年科学基金资助项目(51125018);"十二五"国家科技支撑计划课题(2011BAC06B07);国家自然科学基金资助项目(51204153)

摘　　要：以红土镍矿常压酸浸净化液为原料,采用阴离子交换膜与电解结合的方法制备金属镍。分别研究电解液成分、温度、时间、电流密度和p H等因素对阴极电流效率、回收率、能耗以及槽电压的影响。结果表明:含Ni2+溶液浓度为64 g/L、H3BO4浓度为40 g/L、H2SO4浓度为0.1 mol/L、温度为40℃、电流密度为300 A/m2、p H为5.2时,阴极电流效率达到98.47%,能耗为3470 k W·h/t,得到的金属镍纯度达到99.9%以上,能够满足工业上的要求。Ni was prepared by the method combining anionexchange membrane with electrolysis using nickel laterite atmospheric acid leaching purifying solution as main raw material. The influences of parameters including the electrolyte composition, temperature, time, current density, pH and other factors on the cathodic current efficiency, recovery rate, energy consumption and cell voltage were explored, respectively. The results indicate that the cathode current efficiency and the energy consumption are 98.47%, 3470 kW·h/t at Ni concentration of 64 g/L, H3BO4 concentration of 40 g/L, H2SO4 concentration of 0.1 mol/L, temperature of 40 ℃, pH of 5.2 and cathode current density of 300 A/m2, respectively,and the purity of this nickel can achieve more than 99.9%, which can meet the industrial requirements.

关 键 词：净化液 阴离子交换膜 电解 镍 电流效率 能耗 

分 类 号：TF815[冶金工程—有色金属冶金]