%0 Journal Article
%T 离子交换法净化氯化钪溶液
%A 李青刚
%A 李兆洋
%A 孙盼
%A 张贵清
%J 东北大学学报（自然科学版）
%D 2016
%R 10.12068/j.issn.1005-3026.2016.10.010
%X 摘要 在不同pH值、时间及络合剂EDTA影响下，研究了阳离子交换树脂对氯化钪溶液的深度净化效果.实验结果表明:在pH=2、接触时间3h左右时树脂对Sc3+，Al3+，Fe3+的吸附情况较好，对Zr4+，Si4+，Ti4+吸附性能差，能直接实现Sc3+与Zr4+，Si4+，Ti4+的分离；添加抗坏血酸将溶液中Fe3+还原成Fe2+并添加络合剂EDTA络合Sc3+后，树脂吸附Fe2+与Al3+而不吸附Sc3+.经两段离子交换法，氯化钪溶液中Fe，Ti，Al，Ca，Zr，Si的去除率分别达到93.3%， 100%， 99.80%， 98.22%， 99.63%， 100%.</br>Abstract：The effect of the strong acid styrene type cation exchange resin on deep purification of scandium chloride solution was studied under the different pH value， contact time and the complexant of EDTA. The results showed that when the pH value is 2 and contact time is 3 hours， the resin has great advantage on adsorbing Sc3+， Al3+ and Fe3+， whereas the adsorption performance of Zr4+， Si4+ and Ti4+ is poor. Therefore， the separation between Sc3+ and Zr4+，Si4+，Ti4+ can be achieved. Adding the complexant of EDTA to complex Sc3+ and the ascorbic acid to reduce Fe3+ to Fe2+， Fe2+ and Al3+ instead of Sc3+ can be absorbed on resin. Through the two-stepped ion exchange process， the removal rate of Fe， Ti， Al， Ca， Zr， Si in scandium chloride solution can be 93.3%， 100%， 99.80%， 98.22%， 99.63% and 100%， respectively.
%K 钪
%K 净化
%K 离子交换
%K 络合剂
%K 阳离子交换树脂&lt
%K /br&gt
%K Key words： scandium purification ion exchange complexant cation exchange resin
%U http://xuebao.neu.edu.cn/natural/CN/abstract/abstract9996.shtml