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以苯乙烯为单体，二乙烯苯为交联剂，Cyanex272为萃取剂，采用乳液悬浮聚合法制备CL-Cyanex272萃淋树脂。采用静态吸附法探究了Co浓度、温度、pH、皂化度、时间等因素对CL-Cyanex272萃淋树脂吸附Co、Ni、Mg的影响；采用萃取色层法探究了连续动态过程中萃淋树脂对含Co溶液净化的影响。结果表明：当料液pH=6、皂化度为100%时，CL-Cyanex272萃淋树脂对Co的吸附量达21.4 mg/g;控制皂化度≥70%、料液pH≥5时，Co与Ni、Co与Mg的分离效果较好，其分离系数分别达到1 697和18;动态吸附试验中CL-Cyanex272萃淋树脂可将料液中Co的浓度从80.15%提纯到99.9996%。本研究为CL-Cyanex272萃淋树脂用于工业纯化Co溶液提供良好的依据。
Abstract：CL-Cyanex272 extraction resin was prepared by emulsion suspension polymerization with styrene as monomer, divinylbenzene as cross-linking agent, and Cyanex272 as extractant.The effects of Co concentration, temperature, pH value, saponification degree and time on the adsorption of Co, Ni and Mg by CL-Cyanex272 were investigated by static adsorption method.The effect of CL-Cyanex272 on purification of Co containing solution in continuous dynamic process was investigated by extractive chromatography method.The results show that the adsorption capacity of Co by CL-Cyanex272 is 21.4 mg/g at pH=6 and saponification degree of 100%.Controlling saponification degree of >70% and pH≥5 leads to better separation of Ni and Mg from Co, the separation coefficients reach 1 697 and 18,respectively.In the dynamic adsorption test, Co concentration in the feed liquid is purified from 80.15% to 99.999 6% by CL-Cyanex272.This study provides a good basis for the industrial purification of Co solution with CL-Cyanex272.
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基本信息:
DOI：10.3969/j.issn.1007-7545.2024.03.006
中图分类号:TF816
引用信息:
[1]徐沙,张志峰,李奉真,等.CL-Cyanex272萃取色层法深度净化钴溶液[J].有色金属(冶炼部分),2024(03):41-49.DOI:10.3969/j.issn.1007-7545.2024.03.006.
基金信息:
自然资源部离子型稀土资源与环境重点实验室开放基金资助项目(2022IRERE204; 江西钨业控股集团有限公司科技计划项目(JXTC-23A-05)
2023-10-26
2023
2023-11-02
2023-11-07
2023
1
2024-02-20
2024-02-20