Research & Development

Crystallizing sequence of salts and enrichment rule of boron and lithium during natural evaporation of Manasi salt lake brine

  • BIAN Shaoju ,
  • XU Naicai ,
  • ZHANG Yongxing ,
  • LI Wu
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  • 1. School of Chemistry and Chemical Engineering,Qinghai Normal University,Xining 810016,China
    2. Zhengzhou Institute of Multipurpose Utilization of Mineral Resources,CAGS
    3. Qinghai Institute of Salt Lakes,CAS

Received date: 2021-05-24

  Online published: 2021-11-15

Copyright

, 2021, Copyright reserved © 2021. Office of INORGANIC CHEMICALS INDUSTRY All articles published represent the opinions of the authors, and do not reflect the official policy of the Chinese Medical Association or the Editorial Board, unless this is clearly specified.

Abstract

The crystallization sequence of salts in the Manasi salt lake of xinjiang brine during the evaporation process at 20 ℃ was calculated through ISLEC.The natural evaporation of this brine was conducted in laboratory according the result of ISLEC,and the crystallization sequence of salts was in accord with the calculated one.The enrichment and distribution rules of trace elements such as boron and lithium during evaporation were studied.The crystallization route when the water of Manas lake evaporates naturally in the room is ①CaSO4·2H2O+NaCl;②CaSO4·2H2O+NaCl+MgSO4·6H2O;③NaCl+MgSO4·6H2O+KCl(a bit)+KCl·MgCl2·6H2O;④NaCl+MgSO4·6H2O+KCl·MgCl2·6H2O+MgCl2·6H2O.The content of KCl in the crystallized salts was 14.24% according to the ISLEC calculated result,and 10.59% obtained from experiment.And the boron or lithium did not crystallize,which was enriched about 16 times in the concentrated brine.And the mass fraction of B2O3 was about 1%,and that of Li+ was about 100 mg/L.The suggestion for utilization was proposed according to the research result as that in order to obtain carnallite with high grade,the sulfate in brine should be crystallized out as Na2SO4·10H2O in winter before the evaporation in summer.

Cite this article

BIAN Shaoju , XU Naicai , ZHANG Yongxing , LI Wu . Crystallizing sequence of salts and enrichment rule of boron and lithium during natural evaporation of Manasi salt lake brine[J]. Inorganic Chemicals Industry, 2021 , 53(11) : 55 -59 . DOI: 10.19964/j.issn.1006-4990.2021-0342

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