ISJ Theoretical & Applied Science 02(106) 2022

Philadelphia, USA

Sultonov, B. E., Saparov, A. A., & Isaqova, G. A.

Infulience of specifying the type of precipitating agents to qualitative changes of fertilizer precipitates, obtaned on base phosphorities of central Kyzylkum and nitric acid.

Full Article: PDF

Scientific Object Identifier: http://s-o-i.org/1.1/TAS-02-106-6

DOI: https://dx.doi.org/10.15863/TAS.2022.02.106.6

Language: Russian

Citation: Sultonov, B. E., Saparov, A. A., & Isaqova, G. A. (2022). Infulience of specifying the type of precipitating agents to qualitative changes of fertilizer precipitates, obtaned on base phosphorities of central Kyzylkum and nitric acid. ISJ Theoretical & Applied Science, 02 (106), 56-63. Soi: http://s-o-i.org/1.1/TAS-02-106-6 Doi: https://dx.doi.org/10.15863/TAS.2022.02.106.6

Pages: 56-63

Published: 28.02.2022

Abstract: The influence of the nature of the precipitating agents on the degree of precipitation of nitric phosphoric acid suspensions obtained from mineralized mass of phosphorities of Central Kyzyllkum (Uzbekistan) and nitric acid has been studied. The effects of the norm of precipitating agents and concentration of nitric acid on the degree of precipitation and the degree of CaO passage into liquid phase were also studied. The optimal precipitation parameters are defined. The obtained precipitates under optimal conditions contain as 23.75-24.75% P2O5 total (t.), 20.95-21.92% P2O5 acceptable by citric acid (a.c.a.), 25.16-28.19% CaOtotal (t.), 22.60-23.70% CaOacceptable by citric acid (a.c.a.). The degree of precipitation under optimal conditions is 93.92-100%. The rate of filtration of precipitate suspension is within 350-500 kg/m3 an hour for wet precipitate.

Key words: Mineralized mass, nitric acid, norm of precipitating agents, concentration of nitric acid, precipitate, degree of precipitation, precipitate suspensions, rate of filtration.