STUDY OF THE SOLUBILITY OF FERTILIZERS OBTAINED FROM LOW-GRADE PHOSPHORITES BY HEAT TREATMENT

Abstract

The conducted studies have shown the possibility of thermo-alkaline processing of phosphorites of the Central Kyzylkum for phosphorus-containing fertilizers such as thermophosphate. X-ray studies showed that with an increase in the firing temperature, the mass of the compounds decreased and the digestibility of P2O5 increased. The transition of phosphorus to an assimilable form is due to the fact that, with an increase in temperature, the solubility increases.