离子交换法从硫酸亚铁溶液中分离镍实验研究  

Experimental Study on Nickel Removal in Ferrous Sulphate Solution by Ion Exchange Method

作　　者：雷军鹏 金鑫 王紫燕 LEI Junpeng;JIN Xin;WANG Ziyan(Chengdu Shengweixingke New Materials Research Institute Partnership Business(Limited Partnership),Chengdu 610000,China)

机构地区：[1]成都盛威兴科新材料研究院合伙企业(有限合伙),成都610000

出　　处：《有色金属工程》2024年第6期62-67,共6页Nonferrous Metals Engineering

摘　　要：针对高铁低镍硫酸亚铁溶液中镍铁分离困难的生产实际,采用离子交换技术对硫酸亚铁溶液中的镍铁分离进行了研究。通过条件实验考察了树脂装填量、吸附前液pH值、吸附时间、镍离子浓度等对镍铁分离效果的影响。结果表明,CH-90树脂对含镍硫酸亚铁溶液中的镍有明显的优先选择性,树脂对镍的工作交换容量为15 mg/g。经过离子交换树脂处理,溶液中的铁镍摩尔比由处理前的17∶1最高可以提高到93∶1,镍去除率达到87%,处理后溶液含镍小于0.3 g/L,具有良好的分离效果。吸附等温线和吸附动力学分析研究发现,CH-90树脂吸附遵循Langmuir方程和准二级动力学方程,吸附过程主要是离子交换控制。Based on the problem of nickel remove from ferrous sulphate solution with low nickel content,it was investigated by ion exchange process in this paper.Different factors,including resin filling capacity,pH,time,initial nickel content and so on,were investigated to explore the performance of nickel remove from ferrous sulphate solution by designed experiments.The results indicate that priority selectivity for nickel is presented in ferrous sulphate solution after resin adsorption and the operating capacity of CH-90 resin for nickel is 15 mg/g.After resin adsorption,Fe/Ni molar ratio is increased from 17∶1 to 93∶1 and removal rate on nickel reached 87%.Additionally,nickel content is reduced to 0.3 g/L.In other words,nickel is removed effectually from ferrous sulphate solution.The adsorption isotherms and adsorption kinetics were evaluated by changing the initial content and adsorption reaction time.It was found that the resin was in line with the Langmuir adsorption isotherm,and met the quasi-second-order kinetic equation.Furthermore,adsorption process was mainly controlled by ion exchange.

关 键 词：离子交换法 除镍 硫酸亚铁溶液 

分 类 号：TF815[冶金工程—有色金属冶金]