化学工程2011，Vol.39Issue(10)：26-28,33,4.
磷酸三丁酯/甲基异丁基酮萃取锂的特性
Characteristics of lithium extraction with tributyl phosphate/methyl-isobutyl ketone
摘要
Abstract
The lithium distribution in the organic phases was studied when the third phase was formed in the extraction of lithium with tributyl phosphate (TBP) diluted by kerosene from the solutions containing lithium and magnesium in the presence of FeCl3. It indicates that lithium is mainly uploaded by the middle organic phase. To avoid the formation of the third phase, different diluents were compared when TBP was used as the extractant, and it shows that TBP diluted by methyl-isobutyl ketone ( MIBK) presents a good extraction power for lithium with a high selectivity in the presence of FeCl3. Therefore TBP/ MIBK can extract lithium from brine with a high ratio of lithium to magnesium effectively. The extractions of lithium with TBP/kerosene, MIBK/kerosene and TBP/MIBK were compared, and the results indicate that TBP and MIBK can both extract lithium. Further studies on the extraction of lithium with TBP/MIBK were carried out, and it reveals that TBP/MIBK form a synergistic extraction system of lithium. The values of distribution coefficient of lithium and lithium-to-magnesium separation factor both increase with the increase of the volume fraction of TBP in the organic phase.关键词
锂/磷酸三丁酯/甲基异丁基酮/协同萃取Key words
lithium/TBP/MIBK/synergistic extraction分类
化学化工引用本文复制引用
谭元忠,秦炜..磷酸三丁酯/甲基异丁基酮萃取锂的特性[J].化学工程,2011,39(10):26-28,33,4.基金项目
科技部863项目(2008AA062111) （2008AA062111）
