Inorganic Chemicals Industry ›› 2023, Vol. 55 ›› Issue (11): 1-11.doi: 10.19964/j.issn.1006-4990.2023-0193

• Reviews and Special Topics •     Next Articles

Research progress of lithium extraction technology and industrialization of unconventional brines in global

ZHU Ruisong(), CAO Jing, LIU Taoran, LI Yingwen, GAO Fei, HU Xuesheng()   

  1. PetroChina Petrochemical Research Institute,Beijing 102206,China
  • Received:2023-04-04 Online:2023-11-10 Published:2023-11-16
  • Contact: HU Xuesheng E-mail:zhuruisong010@petrochina.com.cn;huxuesheng@petrochina.com.cn

Abstract:

The lithium brine is an important raw material for lithium battery and energy storage materials,and also the strategic resources of the country.Demand for lithium has prompted researchers to expand lithium extraction from conventional salt lake brines to unconventional sources such as oilfield brines and geothermal brines.At present,the lithium extraction technology of conventional brines has been successfully applied in industrialization worldwide,while the lithium extraction technology of unconventional brines is still in the stage of industrialization development,and a large number of lithium resources in brines have not been developed and utilized.Based on the information of lithium resource distribution and composition in unconventional brines,the research status of direct lithium extraction technology in unconventional oilfield brines and geothermal brines was analyzed,and the main lithium extraction technologies,such as precipitation,membrane separation,solvent extraction and adsorption were systematically studied.In addition,the industrialization status of lithium extraction technology of unconventional brines at home and abroad was summarized,and the future lithium extraction technology of unconventional brines was prospected,which was expected to provide reference for the green and efficient development of lithium resources of geothermal brines and oilfield brines.

Key words: oilfield brine, geothermal brine, lithium extraction technology, industrial

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