文献类型：期刊文献

中文题名：盐湖卤水萃取提锂及其机理研究

英文题名：Extraction of Lithium from Salt Lake Brine and Mechanism Research

作者：孙淑英[1];叶帆[1];宋兴福[1];李云钊[1];汪瑾[1];于建国[1]

机构：[1]华东理工大学化学工程联合国家重点实验室,上海200237

年份：2011

卷号：27

期号：3

起止页码：439

中文期刊名：无机化学学报

外文期刊名：Chinese Journal of Inorganic Chemistry

收录：CSTPCD;;Scopus;WOS:【SCI-EXPANDED(收录号:WOS:000288976900007)】；北大核心:【北大核心2008】；CSCD:【CSCD2011_2012】；

基金：中央高校基本科研业务费专项资金;国家自然科学基金(No.20906022)资助项目

语种：中文

中文关键词：萃取;卤水;锂;磷酸三丁酯

外文关键词：extraction; brine; lithium; TBP

摘要：本文以磷酸三丁酯(TBP)为萃取剂,煤油为稀释剂,在FeCl3存在的条件下,选择性萃取盐湖卤水中的锂。系统研究了相比、萃取剂组成、铁锂比等对锂萃取率的影响,及洗涤、反萃取工艺条件。得到最佳工艺条件为:萃取相比VO/VA为1.5,TBP质量分数为75%,cFe3+/cLi+=2,cH+=0.02 mol.L-1,萃取时间为20 min;洗涤相比VO/VA为15;反萃取相比VO/VA为20。并运用红外与核磁方法分析研究,表明是TBP上的P=O双键与LiFeCl4金属配合物的配位水分子产生氢键作用而使金属配合物与TBP结合。
The paper presents extraction of lithium from salt lake brine by tributyl phosphate（TBP）-kerosene-FeCl3 extraction system.Extraction,washing and back extraction stages were studied systematically.The best conditions were determined by studying the single factors of extraction VO/VA ratio,extractant composition,molar ratio of Fe3＋ to Li＋ and so on,and the results were： extraction VO/VA is 1.5,TBP% is 75%,c is 2,c is 0.02 mol·L-1,extraction time is 20 min;washing VO/VA is 15;back extraction VO/VA is 20.The interaction of lithium complex with TBP was investigated by IR and NMR.The results showed that the complex and TBP were associated by hydrogen bond.