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In the monograph it was studied that the process of phosphoric acid activation of all types of phosphorites of Central Kyzylkum: ordinary phosphorite flour, washed concentrate, thermal concentrate, as well as such large-tonnage waste of Kyzylkum phosphorite plant, such as mineralized mass and pulverized fraction depending on various parameters. The process of phosphorus-acid thermal decomposition of ordinary phosphate meal, washed concentrate and thermal concentrate at different weight proportions of acid: phosphorus raw materials and temperatures from 140 to 300 ºС has been studied, as well as the basic technological scheme of single phosphate fertilizers production has been developed.