Crystallization of schoenite from saturated salt solutions
https://doi.org/10.29235/1561-8331-2019-55-1-86-92
Abstract
Influence of cooling and mixing rate on the process of schoenite crystallization from saturated salt solutions was investigated in laboratory conditions. It was established that as the system’s cooling rate and mixing speed increase, a significant decrease of the induction period of schoenite crystallization is observed. Fivefold increase of the cooling rate increases sizes of schoenite crystals by an average of 2.5–3.0. Mixing rate increase leads to the formation of a fine crystalline precipitate (crystal size 10−20 μm).
About the Authors
D. V. Сherednichenko
Institute of General and Inorganic Chemistry of the National Academy of Sciences of Belarus
Belarus
Belarus
Denis V. Сherednichenko – Ph. D. (Chemistry), Leading Researcher.
9/1, Surganov Str., 220072, Minsk.
P. D. Varabyou
Institute of General and Inorganic Chemistry of the National Academy of Sciences of Belarus
Belarus
Belarus
Pavel D. Varabyou – Ph. D. (Chemistr y), Leading Researcher.
9/1, Surganov Str., 220072, Minsk.
N. P. Krutko
Institute of General and Inorganic Chemistry of the National Academy of Sciences of Belarus
Belarus
Belarus
Nikolay P. Krutko – Academician, D. Sc. (Chemistry), Professor, Director General of the State Research and Production Association «Chemical Products and Technologies».
9/1, Surganov Str., 220072, Minsk.
V. V. Shevchuk
Institute of General and Inorganic Chemistry of the National Academy of Sciences of Belarus
Belarus
Belarus
Viacheslav V. Shevchuk – Corresponding Member D. Sc. (Chemistry), Head of Department of Mineral Fertilizers.
9/1, Surganov Str., 220072, Minsk.
E. V. Layeuskaya
Institute of General and Inorganic Chemistry of the National Academy of Sciences of Belarus
Belarus
Belarus
Еlena V. Layeuskaya – Ph. D. (Engineering), Senior Researcher.
9/1, Surganov Str., 220072, Minsk.
S. V. Bucha
Institute of General and Inorganic Chemistry of the National Academy of Sciences of Belarus
Belarus
Belarus
Sviatlana V. Bucha – Junior Researcher, Institute of General and Inorganic Chemistry.
9/1, Surganov Str., 220072, Minsk.
References
1. Matusevich L. N. Crystallization from solutions in the chemical industry. Moscow, Khimiya Publ., 1968. 304 p. (in Russian).
2. Leszczynski S. (1956) Krystalizacija w przemysle chemicznym [Crystallization in the chemical industry]. Warszawa, Panstw. Wydawn. Techn., 1956. 223 p. (in Poland).
3. Van Hook A. Crystallization: theory and practice. New York, Reinhold Publ. Corp., 1961. 52 p.
4. Grove Jr. C. S., Jelinek R. V., Schoen H. M. Crystallization from Solution. Advances in Chemical Engineering, 1962, vol. 3, pp. 1−60. https://doi.org/10.1016/s0065-2377(08)60057-5
5. Bamforth A. W. Industrial Crystallization. London, Leonard Hill, 1965. 361 p.
6. Vishnyakov A. K., Shakirzyanova D. R., Gabdrahmanova, V. I. Polygalite rocks − new raw materials for the production of scarce potassium-magnesium sulphate fertilizers. Razvedka i ohrana nedr = Prospect and protection of mineral resources, 2007, no.11, pp. 29−33 (in Russian).
7. Karpets M. V., Kostiv I. Yu. Kinetics of conversion of langbeinite into schoenite in saturated solution. Russian Journal of Applied Chemistry, 2008, vol. 81, no. 5, pp. 739−742. https://doi.org/10.1134/s1070427208050017
8. Safrygin Yu. S., Osipova G. V., Buksha Yu. V., Timofeev V. I. Method for obtaining the schoenite. Patent of the Russian Federation no. 2373151, 2009 (in Russian)
9. Goncharik I. I., Shevchuk V. V., Krut’ko N. P., Smychnik, A. D., Kudina O. A. Synthesis of potassium sulfate by conversion of potassium chloride and magnesium sulfate. Russian Journal of Applied Chemistry, 2014, vol. 87, pp. 1804–1809. https://doi.org/10.1134/s1070427214120027
10. Grabovenko V. A. Production of chlorine-free potassium fertilizers. Leningrad, Khimiya Publ., 1980. 256 p. (in Russian).
Review
Views: 781
Email this article 