PURIFICATION OF PHOSPHORIC ACID FROM IMPURITIES IN THE EXTRACTION PROCESS AND RESEARCH OF OBTAINING HIGH-QUALITY NITROGEN-PHOSPHORIC FERTILIZERS

The aim of the research is the removal of phosphoric acid from Central Kyzylkum phosphates by fluoride and sulphate additives during the extraction of phosphoric acid, iron and aluminium, calcium, magnesium, sulphate, fluorine during the ammonium phosphate acid extraction phase. Study the process of producing environmentally friendly and fully water-soluble ammonium phosphates.