复合技术分离Co、Ni离子研究

论文编号:HG154  论文字数:7673,页数:23

 摘 要：本论文论述了目前多种有效的钴、镍分离方法。用电渗析和EDTA络合技术进行金属离子混合体系的分离，实现混合溶液体系中钴、镍分离。在分离条件上，选取不同Ni和EDTA摩尔比、络合室流量、电流密度、CoCl2·6H2O和NiCl2·6H2O总浓度、CoCl2·6H20和NiCl2·6H20摩尔比，以考察它们对离子分离速度的影响。实验结果：Ni和EDTA摩尔比1:1、络合室流量70L/h、CoCl2·6H2O和NiCl2·6H2O摩尔比1.2:1、CoCl2·6H2O和NiCl2·6H2O总浓度16.2080 g/L、电流密度20.0 mA/cm2时分离速度最好。
 关键词：钴；镍；EDTA-2Na；金属离子分离

 
Abstract: This paper discusses a variety of effective current cobalt and nickel separation method. Using electrodialysis and EDTA complex technology we achieve separation of the mixed  metal ions system, and achieve separation of the mixed solution of the system of cobalt, nickel. In the separation of conditions, different molar ratio of Ni and EDTA, flow of complexing room, ampere density, total concentration of CoCl2·6H2O and NiCl2·6H2O, molar ratio of CoCl2·6H2O and NiCl2·6H2O were selected to study their impact on the rate of the impact of ionic separation. The experimental results: the molar ratio of Ni and EDTA 1:1, the flow of complexing room 70L/h, ampere density 20.0 mA/cm2, total concentration of CoCl2·6H2O and NiCl2·6H2O 16.2080 g/L and molar ratio of CoCl2·6H2O and NiCl2·6H2O 1.2:1 are considered the best condition.
Keywords：Cobalt; Nickel; EDTA-2Na; Separation of metal ions

目 录
 中文摘要 I
 英文摘要. II
 目 录 III
 1. 绪 论 1
 1.1  化学沉淀分离 1
 1.2  溶剂萃取法 1
 1.3  萃取剂组合及其他萃取分离 1
 1.4  离子交换树脂法 2
 1.5  双水相体系溶剂分离 2
 1.6  聚合物-盐-水液-固萃取（非有机溶剂液固萃取）法 2
 1.7  氧化还原法 3
 1.8  电反萃取法 3
 2. 实验部分 4
 2.1  实验设备 4
 2.2  实验试剂与原料 4
 2.3  分离原理 4
 2.4  实验操作 4
 3. 实验结果与讨论 5
 3.1  浓度分析关联 5
 3.2  实验结果的影响因素 9
 4. 总结与展望 17
 致  谢 18
 参考文献 19