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IJSTR >> Volume 9 - Issue 5, May 2020 Edition



International Journal of Scientific & Technology Research  
International Journal of Scientific & Technology Research

Website: http://www.ijstr.org

ISSN 2277-8616



Obtaining Fertilized Precipitate On The Basis Of Mineralized Mass Without And With Separation Of An Insoluble Residue

[Full Text]

 

AUTHOR(S)

Shamuratova Makhinbanu, Sultanov Bokhadir, Namazov Shafaat

 

KEYWORDS

mineralized mass, hydrochloric acid, fertilizer precipitate, an insoluble residue, degree of washing.

 

ABSTRACT

The processes of obtaining fertilizer precipitates based on mineralized mass (MM) and hydrochloric acid without and with the separation of an insoluble residue are studied. The effects of acid concentration, amount and temperature of washing water on the qualitative parameters of precipitates are determined. The optimal amount and temperature of the wash water are established, where a fertilizer precipitate with the maximum content of P2O5 and the lowest content of calcium chloride is obtained. All acid concentrations, the ratio of MM : H2O = 1.0: 1.5; 1.0: 2.0 and a wash water temperature of 80-90°C are optimal. In this case, a fertilizer precipitate of the following contents is obtained: P2O5total - 23.32-24.06%; P2O5 by citric acid - 20.52-21.29%; CaOtotal - 25.84-26.40%; CaOassi. by citric acid - 22.87-23.23%; P2O5water = 2.02-2.21%; CaOwater - 1.67-2.24%; Сl - 1.03-1.73% and the degree of washing off from CaCl2 - 96.24-97.83% and Р2О5total –33.18-34.72%; P2O5assi. by citric acid –29.20-30.89%; CaOtotal –34.51–35.55%; CaOassi. by citric acid –30.93-31.99%; P2O5water 1.67-2.53%; CaOwater -1.58-2.11%; Cl –1.07–1.23% and the degree of washing off from CaCl2 –97.19–98.64%, respectively, without and with the separation of an insoluble residue.

 

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