OBTAINING A COMPLEX PHOSPHORUS FERTILIZER SUCH AS DOUBLE SUPERPHOSPHATE

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. The gypsum value of 1.42 water for washing decreases to 1.3-1.5, depending on the liquid:t in the extractor, and fluorine partially (up to 40%) passes into phosphogypsum Kiv=97.6 and Kout=97.5%.