Recycling of Local Phosphate Waste - mineralized Mass into Activated Phosphorus Fertilizers
B. E. Sultonov, E. S. Nozimov, D. S. Kholmatov
Chemical Science International Journal · pp. 108–114 · Published 14 Dec 2023
10.9734/CSJI/2023/v32i6875Abstract
The manuscript provides the results of the process of obtaining activated phosphorus fertilizer (APF) by nitric acid processing of mineralized mass (MM) of phosphate waste, which formed during the sorting stage of thermal beneficiation of Central Kyzylkum (CK) phosphorites. For experiments was used MM with content 14.60% P2O5total(t.).; 3.07% P2O5acceptable by citric acid (ac.c.a.); 43.99% CaOt.; 1.01% MgO; 14.11% CO2; 1.04% Al2O3; 0.89% Fe2O3; 1.58% SO3; 1.30% F; 1.02% H2O; CaO:P2O5 – 3.01 and 10.82% insoluble residual. The optimal concentrations and norms of nitric acid have been determined. Phosphorus fertilizer suspensions were neutralized with Ca(OH)2 suspension in order to prevent P2O5 from passing into the solution. APF obtained in optimal parameters has the following composition (weight, %): 20.42-20.58 P2O5total(t.); 11.02-11.72 P2O5ac.c.a.; 38.87-39.01CaOt.; 23,39-24,48 CaO ac.c.a.. The degree of transition of P2O5 to liquid phase is 2.02-2.06%.
Cited by 3
Urgench State University named after Abu Rayhon Beruni, A. Yuldasheva, S. Shamuratov · Kompleksnoe Ispolzovanie Mineralnogo Syra = Complex Use of Mineral Resources · 2025
Urgench State University named after Abu Rayhan Biruni, U.S. Baltayev, S.X. Shamuratov · Kompleksnoe Ispolzovanie Mineralnogo Syra = Complex Use of Mineral Resources · 2025
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