Preparation of a Complex Phosphorus Fertilizer of the Double Superphosphate Type

The article found that: in the sulfuric acid processing of Kyzylkum phosphorites, the technological parameters are similar to the processing of Karatau phosphorites with improved crystallization and washing of phosphogypsum. Gypsum number 1.42 water for washing is reduced to 1.3-1.5 depending on the w: t in the extractor and fluorine partially (up to 40%) passes into phosphogypsum Kizv = 97.6 and Kvy = 97.5%.