Chemical Equipment and Design

Instruction of production process and equipment for continuous freezing crystallization denitrification of lithium hydroxide

  • Tao Han ,
  • Yanbin He ,
  • Shuaipeng Huang
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  • Hebei Yanming Chemical Industry Equipment Co.,Ltd.,Shijiazhuang 050031,China

Received date: 2019-09-13

  Online published: 2020-03-31

Abstract

The first method of lithium hydride freeze-crystallization denitrification is the batch process and equipment.The process has many disadvantages,such as higher content of impurities(such as SO4 2-) in the frozen mother liquor,large amount of liquid attached to the Glauber′s salt crystal,and more lithium loss.The continuous production process and equipment of lithium hydride freeze-crystallization denitrification was introduced.By using continuous production process and equipment,the content of SO4 2- in the frozen mother liquor was reduced from 45~50 g/L to 35~40 g/L,and the liquid content of the Glauber′s salt crystal was reduced from about 10% to about 5%.It can reduce the energy consumption of subsequent lithium hydroxide production and increase the recovery rate of lithium.

Cite this article

Tao Han , Yanbin He , Shuaipeng Huang . Instruction of production process and equipment for continuous freezing crystallization denitrification of lithium hydroxide[J]. Inorganic Chemicals Industry, 2020 , 52(3) : 98 -100 . DOI: 10.11962/1006-4990.2019-0258

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