离子交换法在镁锂选择性分离中的应用研究

The Applicatian of Ion Exchange Method in Selective Separation of Magnesiumand Lithium

通过考察树脂对溶液中镁锂吸附的情况,从5种树脂中筛选出吸附容量和镁锂分离效果优良的树脂。考察了时间、pH、温度、其他盐杂质离子和镁锂比等因素对树脂吸附性能的影响。实验结果表明:ZL-5树脂对Li^+、Mg^(2+)的分离效果较好;且ZL-5树脂吸附Mg^(2+)符合Freundlich经验式。

The absorption of Mg^2＋and Li＋in solution by resin was investigated to select the resin with high adsorption capacity and good separation effect on Mg^2＋and Li^＋from five resins. And the factors including time, p H,temperature, other impurity ions and the Mg/Li ratio on the adsorption properties of the resin were discussed in this paper. The test results showed that ZL-5 resin had the best separation ability on Li^＋and Mg^2＋ among the five tested resins, and the absorption of Mg^2＋ by ZL-5 resin was in accordance with the Freundlich formula.