INFLUENCE OF MODIFIERS ON THE PHYSICO-CHEMICAL PROPERTIES OF GRANULAR HALURGIC POTASSIUM CHLORIDE

UDC 661.832'032.1.022.3-026.772

  • Volchek Ol’ga Mikhaylovna − Master of Engineering, Senior Lecturer, the Department of “Equipment and Automation of Production”. Baranovichi State University (21, Voykova str., 225404, Baranovichi, Republic of Belarus). E-mail: barsu@brest.by

  • Vysotskaya Nadezhda Aleksandrovna − PhD student, Head of the Department of Scientific and Technical Information. JSC “Soligorsk Institute of Resources Saving Problems with Pilot Production” (69, Kozlova str., 223710, Soligorsk, Republic of Belarus). E-mail: onti@sipr.by

DOI: https://doi.org/10.52065/2520-2669-2022-259-2-26-31

Key words: potassium chloride, strength, caking, granules, refinement, reagent, modifier.

For citation: Volchek O. М., Vysotskaya N. A. Influence of modifiers on the physico-chemical properties of granular halurgic potassium chloride. Proceedings of BSTU, issue 2, Chemical Engineering, Biotechnologies, Geoecology, 2022, no. 2 (259), pp. 26–31 (In Russian). DOI: https://doi.org/10.52065/2520-2669-2022-259-2-26-31.

Abstract

For the practical use of fertilizers, it is necessary to ensure the stability of the characteristics during the transportation and storage of granules. In this regard the problem of obtaining granular fertilizers with improved physical-mechanical and physical-chemical properties is necessary to solve. The article considers the possibility of reducing the water absorption of halurgical potassium chloride granules, provided that their required strength and destructibility are maintained. It is shown that the use of soda ash as a modifier in the processing of potassium chloride washed from calcium and magnesium chlorides before pressing makes it possible to reduce moisture absorption by 80% and reduce the overall porosity with a slight increase in the strength of the granules, and one should strictly observe the stoichiometry with respect to the surface layer when processing the granules at the refinement stage. Sodium sulfate used as a modifier results in a 30–40% decrease in moisture absorption with a slight change in strength and porosity. The influence of the surfaceactive modifier consumption on the caking and destructibility of potassium chloride granules has been studied. The results of the experiments have shown that 50–100 grams of surfactant per 1 ton of fertilizer are sufficient to ensure the required properties of the granules.

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13.06.2022