Maqola

Flow of simple superphosphate using two-stage decomposition of phosphorite

Kh OtaboevPhosphate Fertilizer Laboratory, Institute of General and Inorganic Chemistry, Academy of Sciences of Uzbekistan, 100170 Tashkent, UzbekistanDoniyor SherkuzievDepartment of Chemical Technology, Faculty of Chemistry Technology, Namangan Institute of Engineering and Technology, 160115 Namangan, UzbekistanШ. С. НамазовPhosphate Fertilizer Laboratory, Institute of General and Inorganic Chemistry, Academy of Sciences of Uzbekistan, 100170 Tashkent, UzbekistanRuzmat RadjabovPhosphate Fertilizer Laboratory, Institute of General and Inorganic Chemistry, Academy of Sciences of Uzbekistan, 100170 Tashkent, UzbekistanAtanazar SeytnazarovPhosphate Fertilizer Laboratory, Institute of General and Inorganic Chemistry, Academy of Sciences of Uzbekistan, 100170 Tashkent, Uzbekistan

IOP Conference Series Earth and Environmental Scienceconference2021en

ABI

Annotatsiya

Abstract The methods for producing simple superphosphate by two-stage sulfuric acid decomposition of natural phosphates are analyzed. For the first stage, the process of decomposition of high-carbonate powdered phosphorite is studied depending on the rate of sulfuric acid from stoichiometry to the formation of H 3 PO 4 , its concentration and the reaction time of the starting components. For the second stage, the process of neutralization of phosphoric acid is studied, depending on the norm of phosphate rock for the formation of Ca(H 2 PO 4 ) 2 . The drying process of superphosphate is carried out, in which granular superphosphate is obtained, and P 2 O 5total . - 12%, P2O5free. - 4.6%, P2O5dig : P2O5total = 90%, P2O5 water : P2O5total = 79%.

Mavzular

Phosphorus and nutrient management Chemical Synthesis and Characterization Layered Double Hydroxides Synthesis and Applications

Identifikatorlar

DOI: 10.1088/1755-1315/939/1/012055

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