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IMPROVING TECHNOLOGY FOR PRODUCING COMPLEX FERTILIZER FROM LOW-GRADE PHOSPHORITES OF THE CENTRAL KUMKYZYL

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MAQOLA ANNOTATSIYASI

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The methods of nitric acid processing of phosphate raw materials are analyzed. A technology has been developed for the nitric acid processing of phosphate raw materials into nitrogen-phosphorus fertilizer with the implementation of the process in a condensed pulp by adding sulfuric acid. A technology for producing complex fertilizers with a wide range of N:P2O5:K2O ratios with improved physico-chemical parameters due to the introduction of various potassium salts into the process is proposed

MUALIFLAR

S.Kazakhbaev

Karakalpak State university

D.Kurbiyazov

Karakalpak State university

A.Erkaev

Karakalpak State university

A.Reimov

Karakalpak State university

A.Allamuratova

Tashkent Institute of Chemical Technology

Teglar

# calcium# sulfuric acid# Complex fertilizers# phosphate raw materials# nitric acid# nitrogen-phosphorus fertilizer# Central Kyzylkum nitrocalcium

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Maqola idintifikatorlari

Foydalanilgan adabiyotlar

1.Preliminary patent of the Republic of Uzbekistan IDP 05291 .MKI 7S 05V 13/06. Method for producing complex fertilizer. / Erkaev A.U. Yusupbekov N.R. Artikov G.O. and etc. //Ichthirolar . Rasmiy akhbor o tnoma. 2002 г. No. 4.2.Patent of the Republic of Uzbekistan No. IAP 05335. Method for processing highly carbonized phosphorites / Erkaev A.U., Yakubov R.Ya., Allamuratova A., Toirov Z.K. // Publ . 01/04/2017. –Bulletin No 2.3.Reimov A.M., Erkaev A.U., Namazov Sh.S., Beglov B.M. Physico-chemical properties of nitrocalcium phosphate pulps//Uzb. Chem. Zh. 2001, No6, P.6-11.4.Reimov A.M., Erkanv A.U., Namazov Sh.S., Beglov B.M. Nitrogen -_ phosphorus -calcium fertilizers based on the decomposition of ordinary and phosphamide of the Central Kyzylkum with an incomplete norm of nitric acid // Reports of the Academy of Sciences of the Republic of Uzbekistan, No 5, P. 50-52.5.Reimov A.M. Development of a technology for the production of nitrocalcium phosphate and nitrocalcium sulphophosphate fertilizers based on the decomposition of Kyzylkum phosphorites at a reduced rate of nitric acid: Author 's abstract ..... candidate oftechnical sciences. -Tashkent, 2004 -23 pages.6.Radzhabov R.R. Pilot plant for producing nitrocalcium phosphate fertilizer // Chemical technology. Control and management. -2006, No 3, p. 5-11.7.Radzhabov R.R., Namazov Sh.S.. Granulation and drying of nitrophosphate fertilizers. Current problems of chemical processing of phosphorites of the Central Kyzylkum . Conference materials Tashkent, 2006, 32-36 pp.8.Pozin M.E. Technology of mineral fertilizers : Textbook for universities. L.: Chemistry, 1989.-358 pp.9.Mineev V.G., Gryzlov V.P. Complex fertilizers : Agropriemizdat , 1986.-252 pp.10.Kuvshinnikov I.M. Mineral fertilizers and salts: properties and methods for their improvement. -M: Chemistry 1987. –256 p.11.Yakubov R.Ya., Ibragimov K.G., Erkaev A.U. and others. Research on ways to improve the physical and chemical properties of nitrocalcium phosphate fertilizer // Proc . d okl . international _ scientific _ Conf .: Volgograd. –2009. –P.31.12.Yakubov R.Ya., Erkaev A.U., Ibragimov K.G., Toirov Z.K. Determination of the effectiveness of the influence of modifying mineral salts on the hygroscopicity of complex fertilizers. // Chemical Technology. Control and management.-2010y No3, pp 5-11 .13.Yakubov R.Ya., Erkaev A.U., Ibragimov K.G. , Toirov Z.K. Organization of production of NPK fertilizers using low-grade phosphorites of the Central Kyzylkum . // Chemical technology. Monitoring and management.-2010y, No 3, pp.5-11 14.Erkaev A.U., Ibragimov K.G., Toirov Z.K., Yakubov R.Ya. Conditioning of nitrocalcium phosphate fertilizer with inorganic additives. // Chemistry and chemical technology. –2010y, No 2 , pp. 7-12

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