Сold polyhalite decomposition
https://doi.org/10.29235/1561-8331-2025-61-4-348-352
Abstract
The leaching of calcined and washed with water and liquor polyhalite – free from sodium chloride – at ambient temperature is studied. The influence of contact time, leaching liquor concentration, and the ratio of polyhalite to leaching liquor on the extraction of salts consti-tuting polyhalite into the solution is shown. It is shown that as a result of polyhalite cold decomposition, the calcined polyhalite is sepa-rated into a precipitate containing potassium sulfate in the form of syngenite and liquor, which can be used to obtain magnesium sulfate in the future.
About the Authors
V. V. Shevchuk
Institute of General and Inorganic Chemistry of the National Academy of Sciences of Belarus
Belarus
Belarus
Shevchuk Viacheslav V. – Corresponding Member, Dr. Sc. (Chemistry), Head of the Laboratory
9/1, Surganov Str., 220072, Minsk
T. N. Potkina
Institute of General and Inorganic Chemistry of the National Academy of Sciences of Belarus
Belarus
Belarus
Potkina Tatyana N. – Ph. D. (Chemistry), Leading Researcher
9/1, Surganov Str., 220072, Minsk
A. A. Stromskiy
Halurgy Mining and Processing Center OOO ProTechLab
Russian Federation
Russian Federation
Stromskiy Aleksandr A. – Head of the Laboratory
83a, 8th line VO, St. Petersburg
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