Industrial Techniques

Application research of Li+,Na+,K+,SO42--H2O system phase diagram in MVR evaporation process

  • Haiying Tian ,
  • Fu Zhou ,
  • Chuan Xu ,
  • Mingjiang Tu ,
  • Zhaozi Zhong ,
  • Shiying Liao ,
  • Shihong Li
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  • Tianqi Lithium Industries.Inc,Shehong 629200,China

Received date: 2020-09-28

  Online published: 2021-08-11

Abstract

In industry,the by-product of extracting lithium from ore to produce lithium carbonate is the sodium sulfate pow-der.In order to solve the current problem of lithium sulfate and sodium sulfate eutectic during MVR evaporation,the following measures were taken:Firstly,combining with the actual sample data of MVR production process,the phase diagram of Li+,Na+,K+,SO42- -H2O system was theoretically analyzed,and the existence of lithium sulfate and sodium sulfate eutectic com-plex salts in the evaporation process of MVR was proved and comprehensively analyzed by chemical analyzed means of flame photometer,atomic absorption spectrophotometer and XRD.Secondly,combining with the MVR equipment structure and pro-duction process,a solution to the problem of excessive lithium impurities in sodium sulfate production caused by lithium sul-fate and sodium sulfate eutectic was put forward.

Cite this article

Haiying Tian , Fu Zhou , Chuan Xu , Mingjiang Tu , Zhaozi Zhong , Shiying Liao , Shihong Li . Application research of Li+,Na+,K+,SO42--H2O system phase diagram in MVR evaporation process[J]. Inorganic Chemicals Industry, 2021 , 53(8) : 75 -78 . DOI: 10.19964/j.issn.1006-4990.2020-0533

References

[1] 林大泽. 锂的用途及其资源开发[J]. 中国安全科学学报, 2004(9):76-80,98.
[2] 陈贵娥, 张志刚. 电池级碳酸锂的生产及其应用实践研究[J]. 世界有色金属, 2019(2):155,157.
[3] 彭建忠. 国内碳酸锂生产工艺和效益分析[J]. 盐科学与化工, 2019, 48(10):18-21.
[4] 任志峰. 我国元明粉市场纵览[J]. 日用化学品科学, 2007(10):1-4,8.
[5] 刘长岩, 秦佳政. 盐化工技术在锂行业的应用[J]. 盐业与化工, 2016, 45(3):1-3.
[6] Liu Y, Guo Y, Yu X, et al. Solid-liquid metastable phase equili-bria in the five-component system(Li+Na+K+Cl+SO4+H2O) at 308.15 K[J]. Journal of Chemical & Engineering Data, 2014, 59(5):1685-1691.
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