Extraction of Lithium from Brine Containing High Concentration of Magnesium by Tri-n-Butyl Phosphate Dissolved in Kerosene

CIESC Journal

Extraction of Lithium from Brine Containing High Concentration of Magnesium by Tri-n-Butyl Phosphate Dissolved in Kerosene

缑泽明; 朱慎林

Department of chemical engineering, Tsinghua University, Bejing 100084, China

收稿日期:1997-06-04 修回日期:1900-01-01 出版日期:1998-06-28 发布日期:1998-06-28
通讯作者: 缑泽明

Extraction of Lithium from Brine Containing High Concentration of Magnesium by Tri-n-Butyl Phosphate Dissolved in Kerosene

Gou zemin; Zhu Shenlin

Department of chemical engineering, Tsinghua University, Bejing 100084, China

Received:1997-06-04 Revised:1900-01-01 Online:1998-06-28 Published:1998-06-28
Contact: Gou zemin

摘要/Abstract

摘要： Tri-n-butyl phosphate (TBP)dissolved in kerosene was chosen as extractant for lithium from a model brine having high
magnesium-to-lithium ratio and ferric chloride was added to the system.The influences of contact time, concentration of the
extractant, concentrations of some salts (Mg2＋, Na＋, K＋)in the solution, acidity of hydrochloric acid and extraction
temperature on the extraction of lithium with TBP-kerosene system were studied.The suitable extraction conditions were found
to be ：contact time not any less than 20 min；at 20—25℃；［Fe3＋］／［Li＋］about 1.5—2.0；TBP concentration 50％—70％;
[MgCl2] exceeding 3 mol*L－1；pH about 2；while most sodium and potassium salts in the aqueous phase should be removed before
the extraction.

关键词: lithium;solvent extraction;tri-n-butyl phosphate;ferric chloride

Abstract: Tri-n-butyl phosphate (TBP)dissolved in kerosene was chosen as extractant for lithium from a model brine having high
magnesium-to-lithium ratio and ferric chloride was added to the system.The influences of contact time, concentration of the
extractant, concentrations of some salts (Mg2＋, Na＋, K＋)in the solution, acidity of hydrochloric acid and extraction
temperature on the extraction of lithium with TBP-kerosene system were studied.The suitable extraction conditions were found
to be ：contact time not any less than 20 min；at 20—25℃；［Fe3＋］／［Li＋］about 1.5—2.0；TBP concentration 50％—70％;
[MgCl2] exceeding 3 mol*L－1；pH about 2；while most sodium and potassium salts in the aqueous phase should be removed before
the extraction.

Key words: lithium, solvent extraction, tri-n-butyl phosphate, ferric chloride

缑泽明, 朱慎林. Extraction of Lithium from Brine Containing High Concentration of Magnesium by Tri-n-Butyl Phosphate Dissolved in Kerosene[J]. CIESC Journal.

Gou zemin, Zhu Shenlin. Extraction of Lithium from Brine Containing High Concentration of Magnesium by Tri-n-Butyl Phosphate Dissolved in Kerosene[J]. .

Extraction of Lithium from Brine Containing High Concentration of Magnesium by Tri-n-Butyl Phosphate Dissolved in Kerosene

Extraction of Lithium from Brine Containing High Concentration of Magnesium by Tri-n-Butyl Phosphate Dissolved in Kerosene

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