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.

salt lake lithium resource  /  high magnesium-lithium ratio  /  ion sieve  /  aluminum salt adsorbent