International Journal of Engineering and Information Systems (IJEAIS)   Year: 2020 | Volume: 4 | Issue: 7 | Page No.: 40-45 Kinetic Characteristics of Decomposition of Central Kyzylkum Phosphorites by Nitric Acid Suvanov Farrukh Ravshanovich, Yorbobayev Ruslan Chorievich, Mirzaqulov Kholto'ra Chorievich Abstract: Data on the kinetics of decomposition of Central Kyzylkum phosphorites by nitric acid with a concentration of 57%, at a rate of 100% and a temperature of 40, 50 and 60 ° C are given. It is shown that the decomposition of raw phosphate raw materials, washed dried concentrate and washed burnt fosconcentrate proceeds at a high speed - in the first 30 seconds of interaction, 87-90% P2O5 passes into the solution. The remaining 9-12% is extracted in the next 15-20 minutes. This indicates that the phosphorites of Central Kyzylkum are highly reactive phosphate raw materials.