ФИЗИКО-ХИМИЧЕСКИЕ ИССЛЕДОВАНИЯ СУЛЬФАТНЫХ СОЛЕЙ

Background; Chlorine-free potassium fertilizers in agricultural chlorophobic crops such as potatoes, grapes, vegetables and citrus fruits, then the use of nitrate, sulfate and other potassium compounds does not lose its importance. In this regard, it is important to produce potassium sulfate based on continuous conversion technology of flotation potassium chloride with sulfate-containing salts and to expand the range of chlorine-free potash products. Purpose. Study of the physico-chemical properties of sulfate salts of the Aral region for the production of potassium sulfate. Methodology. The study of physicochemical systems by the isothermal method, determination of the elemental composition and morphological studies of samples were carried out according to the approved methodology. Originally. The solubility diagram of the system 2Na+, 2К+, Mg2+,//SO4 2-, 2Cl- - Н2О was theoretically analyzed by the isothermal method at temperatures of 25, 50 and 750C. It has been established that the salt deposits of the Aral region mainly consist of sodium or magnesium sulfates and/or their mixtures at certain ratios. Findings. From a theoretical analysis of the system 2К+, 2 Na+, Mg 2+//2 Cl-, SO4 -2-H2O it was established that at 00C the volume fraction of schoenite reaches more than 24%, at 250C the volume fraction of astrakhanite is 15%, and at 750C the share Glaserite reaches more than 30%. [ABSTRACT FROM AUTHOR]