Production of potassium sulphate by conversion of phosphogypsum and potassium carbonate
https://doi.org/10.29235/1561-8331-2019-55-4-483-489
Abstract
This work shows the possibility of obtaining potassium sulfate by converting phosphogypsum and potassium carbotane by the reaction CaSO4 + K2CO3 → ↓ CaCO3 + K2SO4. The optimal conditions for this process are determined. It is shown that in an aqueous medium at a temperature of 20 °C, a stoichiometric ratio of the initial components, the rotation speed of the stirrer 200 rpm for 15-30 min, the degree of use of Ca2+ ions is 94-95 %. Potassium sulfate contained in the liquid phase is transferred into the solid phase by evaporation and subsequent crystallization.
About the Authors
Z. A. Hotto
Institute of General and Inorganic Chemistry of the National Academy of Sciences of Belarus
Belarus
Belarus
Zemfira A. Hotto ‒ Researcher.
9/1, Surganov Str., 220072, Minsk
I. I. Hancharyk
Institute of General and Inorganic Chemistry of the National Academy of Sciences of Belarus
Belarus
Belarus
Ina I. Hancharyk – Ph. D. (Engineering), Senior Researcher.
9/1, Surganov Str., 220072, Minsk
A. L. Navnyko
Institute of General and Inorganic Chemistry of the National Academy of Sciences of Belarus
Belarus
Belarus
Anna L. Navnyko – Junior Researcher.
9/1, Surganov Str., 220072, Minsk
E. O. Osipova
Institute of General and Inorganic Chemistry of the National Academy of Sciences of Belarus
Belarus
Belarus
Elena O. Osipova ‒ Researcher.
9/1, Surganov Str., 220072, Minsk
References
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