Full Article: PDF
Scientific Object Identifier: http://s-o-i.org/1.1/TAS-12-80-48
DOI: https://dx.doi.org/10.15863/TAS.2019.12.80.48
Language: English
Citation: Mirzakulov, X. C., & Tojiev, R. R. (2019). Processing brine of salt lakes of Karakalpakstan in products of economic purpose. ISJ Theoretical & Applied Science, 12 (80), 235-243. Soi: http://s-o-i.org/1.1/TAS-12-80-48 Doi: https://dx.doi.org/10.15863/TAS.2019.12.80.48 |
Pages: 235-243
Published: 30.12.2019
Abstract: The article discusses the problem of processing the brine of Karaumbet and Barsakelmes lakes into magnesium chloride with the associated production of precipitated gypsum, calcium carbonate and sodium chloride. The process of desulfurization and descalcation of salt brines using distillation liquid — waste of soda production and soda ash — was studied. The process of cleaning up desulfurization and descalcation brines from residual sulfate and calcium ions with barium chloride and sodium carbonate was also investigated. By evaporation of purified suspensions of magnesium and sodium chlorides, the possibility of obtaining a bischofite melt with a content of at least 43-46% MgCl2 and pure NaCl was proven. Based on laboratory studies, a block diagram of the integrated processing of brine from the lakes of Karakalpakstan to magnesium chloride, gypsum, chalk and sodium chloride was developed. By the content of impurities, bischofite corresponds to GOST 7759-73.
Key words: brine of salt lakes, desulfurization, descalcination, evaporation, purification, bischofite, sodium chloride, precipitated gypsum and chalk.
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