Investigation of the Influence of Temperature of Washed Water on the Main Indicators of Fertilizer Precipitate
Current Journal of Applied Science and Technology,
The influence of the temperature of washing water on the main indicators of fertilizer precipitates obtained on the basis of mineralized mass (MM) and phosphorite flour (PF) has been studied. For laboratory experiments, MM with the following composition (weight, %) were used: 14.60-P2O5, 43.99-CaO;14.11-CO2, 1.58-SO3; CaO:P2O5=3.01 and PF, which has the following composition (weight,%):17.76-P2O5, 47.51-CaO; 5.27-i.r.; CaO:Р2О5=2,68. The optimal temperature of washing water can be considered 80-90oC of both phosphate raw materials (PRM). Under optimal parameters, the following formulations of fertilizer precipitates (weight.%) are obtained:P2O5total.=21.60-22.65;P2O5acceptable by citric acid=11.42-12.19; P2O5water solubility=2.08-2.20; CaOtotal.=40.89-41.40; CaOacceptable by citric acid.=22.12-23.07; CaO water solubility=4.03-4.26; Ntotal.=1.69-1.79 based on MM and P2O5total.=24.86-26.07; P2O5acceptable by citric acid=13.19-14.08; P2O5water solubility=2.40-2.57; CaOtotal=45.19-45.41; CaOacceptable by citric acid=24.54-25.37; CaOwater solubility=4.25-4.48; Ntotal.=1.78-1.90 based on PF. The degree of washing of fertilizer precipitates from Ca(NO3)2 is 97.82-98.01 and 97.75-97.98%, respectively for MM and PF.
- Mineralized mass;phosphorite flour
- nitric acid
- acid concentration
- emperature of washing water
How to Cite
Shamuratova MR, Sultonov BE, NamazovSh.S, ZakirovBS. Processing of the washed burned phosphorite concentrate to a fertilizer precipitate. Bulletin of Osh State University. 2017;Special Edition:83-87.
Shamuratova M.R., Sultonov B.E., NamazovSh.S. The influence of some technological parameters on the process of precitation the hydrochloric acid extraction of phosphates. Chemical Science International Journal.2018;25(2):1-6:Article No. CSIJ.45393.
ISSN: 2456-706X, USA.
Shamuratova M.R., Sultonov B.E., NamazovSh.S, Rajabov R. Influence of quantity and temperature of washing water on quality of precipitates obtained on the basis of mineralized mass and hydrochloric acid composition materials. Scientific-Technical and Production Journal, Tashkent. 2019;1:С-75 78.
Rasulov A.A., Alimov U.K., Seytnazarov A.R., NamazovSh.S.,Sultonov B.E. The production of NP fertilizers based on the composition of the floor phosphates using a mixture of phosphoric and sulphic acids. Journal of Chemical Technology and Metallurgy, Sofia.2019; 54(6):1263-1270.
NamazovSh.S., Reimov A.M., Mirzakulov H.Ch., YakubovR.Ya., Beglov B.M. Production of nitro-calcium phosphate and nitro-calcium sulfate fertilizers from ordinary phosphorous of Central Kyzylkum at the model laboratory acid installation. Chemical industry. - St. Petersburg. 2004; 81(12): 604-610.
Rajabov R.R. Experimental-industrial plant for production of nitro-calcium phosphate fertilizer. Chemical technology. Control and management. Tashkent. 2006;3: 5-11.
Rajabov R.R. Evaporation of nitro-calcium phosphate pulp. Chemical technology. Control and management. - Tashkent, 2006;4: 9-12.
Rajabov R.R. Scheme of utilization of low potential heat in production of nitrophosphate fertilizer. Chemical technology. Control and management. – Tashkent. 2008;1:15-20.
Giyasidinov A.L., Sultonov B.E., NamazovSh.S. Production of single fertilizers on the basis of phosphorite flour and nitric acid. Composite Materials. Scientific, technical and Production Journal, Tashkent.2019; 3:34-38.
Sultonov B.E.,Saparov A.A., NamazovSh.S. Nitric acid precipitate based on mineralized mass from phosphorites of Central Kyzylkum.Universum: Technical Sciences.November, Moscow. 2018;11(56):15.
Sultonov B.E, Sarapov A.A. Effect of the precipitation rate on the precipitation process of the nitric acid extraction of phosphates. Composite materials. Scientific, Technical and Production Journal, Tashkent.2018;4:67-71.
Sultanov B.E., Tursunova Z.M., NamazovSh.S, Erkaev A.U., Beglov B.M. Chemical enrichment of phosphorites of the Central Kyzylkum. Reports of the Academy of Sciences of the Republic of Uzbekistan. 2002;4:64-66.
Sultanov B.E., Tursunova Z.M., Erkaev A.U., NamazovSh.S., Beglov B.M. Enrichment of phosphorites of Central KyzylKum with concentrated nitric acid. Uzbek Chem.J. 2002;3:3-7.
Rabinovich V.A., Havin Z.J. Short a chemical directory. Publishing house "Chemistry". Leningrad. 1991;432.
Methods of analysis of phosphate raw materials, phosphorous and complex fertilizers, feed phosphates / Vinnik M.M., Erbanov L.N., Zaitsev P.M. and etc. - Moscow: Chemistry; 1975.
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