离子液体用于盐湖卤水萃取提锂的研究进展

doi:10.19964/j.issn.1006-4990.2021-0282

摘要/Abstract

摘要：

从高镁锂比盐湖卤水中高效、清洁提锂对于保障中国锂工业绿色发展具有重要意义。溶剂萃取法盐湖提锂是盐湖提锂研究和应用中广泛使用的方法,但是存在环境污染大、设备腐蚀严重等问题。近年来,离子液体作为一种绿色高效的介质,已成为溶剂萃取法盐湖提锂研究的热点方向,并且已经取得了较大的研究进展。然而,离子液体萃取体系存在黏度大、离子液体流失、萃取机理不明确等问题。对离子液体用于盐湖萃取提锂的研究进展进行了综述,介绍了不同离子液体在萃取过程中用作萃取剂、协萃剂和稀释剂的研究现状。最后对离子液体用于盐湖提锂的研究前景做了展望,提出开发新型离子液体、建立和优化新型萃取工艺是未来发展方向。

关键词: 离子液体, 盐湖提锂, 溶剂萃取, 萃取机理

Abstract:

The efficient and clean extraction of lithium from salt lakes brine with high Mg/Li ratio is of great significance to ensure the high-quality development of China′s lithium industry.Solvent extraction is widely used in extracting lithium from salt lakes,but the environmental pollution is serious and corrosion of equipment is heavy.Recently,as green solvent,ionic liquids have been widely used in the research of extraction of lithium from salt lakes brine with great research progress,how-ever,there are still some drawbacks such as high viscositythe loss of ionic liquids during the extraction,and the lack of in-depth study on extraction mechanism.The research progress of ionic liquids used for lithium extraction from salt lakes was reviewed.The research status of different ionic liquids used as extractants,co-extractants and diluents in the extraction process was introduced.Finally,the research prospect of ionic liquids for lithium extraction from salt lakes was prospected.It was proposed that the development of new ionic liquids and the establishment and optimization of new extraction processes would be the future development direction.

Key words: ionic liquid, extraction lithium from salt lakes brine, solvent extraction, extraction mechanism

中图分类号:

TQ131.11

康锦,卫丽娜,成怀刚. 离子液体用于盐湖卤水萃取提锂的研究进展[J]. 无机盐工业, 2022, 54(1): 1-6.

KANG Jin,WEI Lina,CHENG Huaigang. Research progress on application of ionic liquids in extracting lithium from salt lakes[J]. Inorganic Chemicals Industry, 2022, 54(1): 1-6.

图/表 5

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