摘要
用离子交换柱在Ni^2＋70g／L，Cu^2＋0．5-2．0g／L，pH=1-4，温度20℃-60°C的模拟硫酸镍电解液中研究硅胶-聚合胺树脂从硫酸镍电解液中深度净化除铜的过程。用H2SO4浓度分别为1．0，1．5，2．0mol/L的解析液考察树脂的解析性能。结果表明，随料液pH增大以及温度升高，树脂对铜的交换容量增大，料液Cu^2＋浓度对交换容量影响不大。最佳吸附条件为料液pH=4，吸附接触时间30min，温度60℃。最佳解析条件为H2SO42mol/L，解析接触时间40min。最佳工艺条件下，树脂的铜穿漏及饱和交换容量分别为0．378和0．496mmol／mL-湿树脂，铜解析液峰值浓度可达38g／L以上。
The deep removing copper process from a artificial nickel sulfate electrolyte with the silica-polyamine resin is investigated in solution containing Cu^2＋ 0.5- 2.0g/L and Ni^2 ＋ 70g/L with pH value 1- 4 at temperature 20-60°C. Desorption performance is researched in elntion solution containing H2SO4 1.0, 1.5 and 2.0 mol/L, respectively. The results show that the higher the pH and the temperature, the greater the exchange capacity of the resin. Cu^2 ＋ composition has less influence on adsorption. The optimal adsorption conditions are solution pH = 4, contact time 30min and temperature 60°C. The optimal desorption condition is H2SO4 2.0 mol/L and contact time 40 min. The breakthrough exchange capacity and saturated exchange capacity of the resin for copper are 0.378 and 0. 496 mmol/mL wet resin, respectively, the peak concentration of copper is over 38g/L in desorption solution.
出处
《有色金属》
CSCD
北大核心
2009年第1期50-55,共6页
Nonferrous Metals
关键词
冶金技术
SP-C树脂
硫酸镍电解液
离子交换
除铜
metallurgical technology
silica-polyamine resin
nickel sulfate electrolyte
ion exchange
copper removal
