Science & Technology Review >

2020 , Vol. 38 >Issue 14: 94 - 101

DOI: https://doi.org/10.3981/j.issn.1000-7857.2020.14.009

Innovation Development

Extracting lithium from salt lake with a high magnesium-to-lithium ratio: Research progress and prospect of lithium salt adsorbents

  • DING Tao ,
  • ZHENG Mianping ,
  • PENG Suping ,
  • WU Qian ,
  • HAN Hongye
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  • 1. College of Geoscience and Surveying Engineering, China University of Mining and Technology, Beijing 100083, China;
    2. Department Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100037, China

Received date: 2020-05-18

  Revised date: 2020-06-20

  Online published: 2020-08-10

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Abstract

According to the statistics of the United States Geological Survey in 2019, the world has identified 62 million tons of lithium resources, of which 59% are distributed in salt lakes. Since most of the salt lakes are high-magnesium-lithium salt lakes,. the extraction process is more difficult. It is desired to prepare an efficient high magnesium-lithium ratio salt lake adsorbent. The article classifies the existing adsorbents according into the different preparation materials and adsorption mechanisms of the adsorbent, summarizes the development status of ion sieve adsorbent, aluminum salt adsorbent, and natural mineral modified adsorbent, and summarizes the adsorption process. The comparative study shows that the natural mineral modified adsorbent has all the advantages of ion sieve adsorbent and aluminum salt adsorbent for lithium extraction. The preparation process is simple, with no waste generation, economic, environmental-friendly, high efficient, etc. In the lithium extraction process, attention should be paid to natural mineral modified adsorbents.

Key words： salt lake lithium resource; high magnesium-lithium ratio; ion sieve; aluminum salt adsorbent

Cite this article

DING Tao , ZHENG Mianping , PENG Suping , WU Qian , HAN Hongye . Extracting lithium from salt lake with a high magnesium-to-lithium ratio: Research progress and prospect of lithium salt adsorbents[J]. Science & Technology Review, 2020 , 38(14) : 94 -101 . DOI: 10.3981/j.issn.1000-7857.2020.14.009

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