Inorganic Chemicals Industry ›› 2023, Vol. 55 ›› Issue (1): 64-73.doi: 10.19964/j.issn.1006-4990.2022-0605

• Development and utilization of lithium resources • Previous Articles     Next Articles

Study on lithium separation from brine by aluminum-based adsorbent in fixed bed

CHEN Jun1,2(),ZHONG Jing1,2,LIN Sen1,2(),YU Jianguo1,2()   

  1. 1. National Engineering Research Center for Integrated Utilization of Salt Lake Resources,East China University of Science and Technology,Shanghai 200237,China
    2. Joint International Laboratory for Potassium and Lithium Strategic Resources,East China University of Science and Technology,Shanghai 200237,China
  • Received:2022-10-12 Online:2023-01-10 Published:2023-01-17
  • Contact: LIN Sen,YU Jianguo E-mail:jchen_2020@163.com;linsen@ecust.edu.cn;jgyu@ecust.edu.cn

Abstract:

Aluminum-based lithium adsorbent is very suitable for extracting lithium from salt lake brine with low lithium grade and high Mg2+/Li+ ratios.It has the advantages of no dissolution loss,high stability,which is the only adsorbent that has been put into industrial production.The homemade spherical aluminum-based lithium adsorbent GLDH was applied to lithium extraction in fixed bed.The effects of adsorption temperature,feed flow rate,initial Li+ concentration and bed height on the adsorption breakthrough curves of GLDH during lithium separation from brine in fixed bed were systematically studied.The results showed that increasing temperature and bed height as well as decreasing initial concentration and flow rate led to longer breakthrough time and higher breakthrough adsorption capacity.Five empirical models,including BDST,Clark,Thomas,Y-N and M-D-R models,were used to fit the lithium adsorption breakthrough curves.It was determined that the M-D-R model could accurately describe the lithium adsorption process in the fixed bed.

Key words: aluminum-based lithium adsorbent, fixed bed, lithium adsorption, influencing factor, model fitting

CLC Number: