Study of the Process of Obtaining Sodium Dihydrogen Phosphate Monohydrate from Central Kyzylkum Phosphorites
DOI:
https://doi.org/10.51699/ijcm.v15i.237Keywords:
desulfurization, sodium metasilicate, barium carbonate, ammonia, purification, carbonate, monohydrateAbstract
The results of studies on the preparation of sodium dihydrogen phosphate monohydrate from simultaneously added mixtures on the basis of EPA from phosphorites of the Central Kyzylkum are presented. The ability to purify oxides, calcium, and fluorine by pre-desulfurized sodium carbonate and metasilicate and washed desalinated barium carbonate with washed calcined phosphorus concentrate by deep desulfurization and ammonization of deep disulfated acid with ammonia gas is shown in p-51.4.
Na2O:P2O5 = 0,41-0,44 or pH 6,2-6,5 the addition of sodium carbonate to a solution of ammonia in the ratio allows to obtain purified solutions of sodium ammonium phosphate.
References
Vinnik M.M., Erbakova L.N., Zaitsev G.I. Phosphate raw materials, phosphate and complex fertilizers.
Mirmusaeva K.S., Asamov D.D., Mirzaqulov X.Ch., Sodiqov B.B., Volynskova N.V. Investigation of the process of neutralization of extracted phosphoric acid from sodium phosphorites with sodium carbonate // Chemical technology. Control and management. - Tashkent, 2011. - No 2. - P. 14-20.
Khudjamqulov S.Z., Melikulova G.E., Mirmusaeva K.S., Mirsaidov M.X., Mirzakulov X.Ch. Study of the process of precipitation of sodium fluoride from extraction phosphoric acid based on Central Kyzylkum phosphorites // Journal of Chemical Technology. Control and management ". - Tashkent, 2016. No 1. - P. 34-40.
Patent № 2492142 (RF). IPC S01V33 / 10. Sodium silicofluoride production method. T.V. Sharipov, A.G. Mustafin, D.I. Shayaxmetov; Published 09/10/2013. The bull. № 33.
