Muкhtorov Parviz Alimahmadovich, Usmonov Muhammadsalim Bozorovich, Umarali Safarali, Kurbonova Hanifa, Kholov Kholmahmad Isroilovich

Annotation:

In this work, a basic technological scheme for the separation of a multicomponent water-salt system containing potassium, aluminum, calcium, and sulfate ions has been developed. The scheme is based on the selective crystallization of the target components – gypsum (CASO₄·2H₂O) and aluminum–potassium alum (KAl(so₄)₂·12H₂O) - by using the difference in their solubility at temperatures of 25 and 0 °C, respectively. The mother liquor after alum extraction, containing mainly potassium sulfate, is proposed to be recycled into the process to increase the overall yield of products. The scheme ensures the production of individual target products with minimal losses.

Keywords: technological scheme, potassium sulfate, aluminum sulfate, gypsum, aluminum-potassium alum, crystallization, solubility, temperature dependence, multicomponent system, separation.