无机盐工业
主管:中海油天津化工研究设计院有限公司
主办:中海油天津化工研究设计院有限公司
   中海油炼油化工科学研究院(北京)有限公司
   中国化工学会无机酸碱盐专业委员会
ISSN 1006-4990 CN 12-1069/TQ

无机盐工业 ›› 2019, Vol. 51 ›› Issue (3): 38-40.

• 研究与开发 • 上一篇    下一篇

从浓缩盐湖卤水中萃取分离锂的实验研究

张永兴1,2,马亚梦1,2(),张利珍1,2,张秀峰1,2,谭秀民1,2   

  1. 1.中国地质科学院郑州矿产综合利用研究所,河南郑州 450006
    2.国家非金属矿资源综合利用工程技术研究中心
  • 收稿日期:2018-09-28 出版日期:2019-03-10 发布日期:2020-05-09
  • 作者简介:张永兴(1986— ),男,硕士,工程师,研究方向为矿产资源利用。
  • 基金资助:
    中国地质调查局地质调查项目(DD20160073)

Experimental research on extracting lithium from concentrated salt lake brine

Zhang Yongxing1,2,Ma Yameng1,2(),Zhang Lizhen1,2,Zhang Xiufeng1,2,Tan Xiumin1,2   

  1. 1.Zhengzhou Institute of Multipurpose Utilization of Mineral Resources, GACS,Zhengzhou 450006,China
    2.National Engineering Research Center for Utilization of Industrial Minerals
  • Received:2018-09-28 Published:2019-03-10 Online:2020-05-09

摘要:

采用溶剂萃取法,对中国青海某盐湖浓缩后的高镁锂比老卤中的锂进行分离提取,系统考察了萃取剂浓度、萃取相比、卤水酸度等因素对锂萃取率的影响。对富锂有机相进行反萃取,考察了反萃取相比、反萃剂盐酸浓度等条件对锂负载有机相反萃取的影响。萃取工艺对从高镁锂比盐湖卤水中分离锂具有较好的应用前景。

关键词: 高镁锂比卤水, 溶剂萃取, 锂分离效率

Abstract:

Lithium was extracted by solvent extraction method from the concentrated high Mg/Li ratio brine from a salt lake in Qinghai Province,China.The influences of concentration of the extracting agent,the phase ratio of organic/aqueous(O/A),the acidity[H +] of brine and other related factors on lithium extraction efficiency were investigated systematically.The lithium-rich organic phase was back extracted and the influences of back extraction phase ratio and the concentration of HCl(back extractant) on the back extraction of lithium-loaded organic phase were also investigated.The extraction technology has a good application prospect for the separation of lithium from the high Mg/Li brine.

Key words: high Mg/Li brine, solvent extraction, lithium separation efficiency

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