ENERGY-SAVING TECHNOLOGY FOR PRODUCTION OF FEED MONOCALCIUM PHOSPHATE BASED ON EXTRACTION PHOSPHORIC ACID AND LIMESTONE

\extraction phosphoric acid, limestone, acid-soluble silicon oxide, diatomaceous earth, feed monocalcium phosphate.

Authors

  • Гавхар МЕЛИКУЛОВА, Ташкентский химико-технологический институт доцент кафедры химической технологии неорганических веществ, Uzbekistan
  • Холтура МИРЗАКУЛОВ, Ташкентский химико-технологический институт, директор ОЦ «ПП и ПКПК» при ТХТИ, профессор кафедры химической технологии неорганических веществ, Uzbekistan
  • Аъзамжон НАСРИДДИНОВ, начальник управления координации и технического развития АО «Аmmofos-Maxam, Uzbekistan
  • Баходир САДЫКОВ, директор по производству АО «Аmmofos-Maxam» , Uzbekistan

The purpose of the study is to develop an energy-saving technology for producing feed monocalcium phosphate by simultaneous concentration and deep defluoridation of extraction phosphoric acid in the presence of acid-soluble silicon oxide and decomposition of limestone with purified acid. Optimal technological parameters, methods of supplying coolant and types of evaporator, in which the degree of defluoridation is more than 99.0%, have been established. Feed monocalcium phosphate was obtained on its basis, their physicochemical characteristics were determined, technological schemes were developed and material balances were compiled.

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