| Issue |
E3S Web Conf.
Volume 449, 2023
International Scientific and Practical Conference “Priority Directions of Complex Socio-Economic Development of the Region” (PDSED 2023)
|
|
|---|---|---|
| Article Number | 06005 | |
| Number of page(s) | 9 | |
| Section | Management of Natural Resources of the Region | |
| DOI | https://doi.org/10.1051/e3sconf/202344906005 | |
| Published online | 16 November 2023 | |
Mineral Composition of Nodular Phosphorite of Karakalpakstan and its Processing into Simple Superphosphate
1 Institute of General and Inorganic Chemistry of the Academy of Sciences of the Republic of Uzbekistan, Tashkent, Uzbekistan
2 Karakalpak State University, Nukus, Uzbekistan
* Corresponding author: ximik_uz@mail.ru
The possibility of simple superphosphate fabricate by sulfuric acid activation of nodular phosphorites of Karakalpakstanwas considered. At the same time, the chemical and mineralogical composition of phosphate raw materials was established using X-ray diffraction. The raw material mainly consists of 27.09% kurskite and 26.19% francolite, as well as quartz. The norm of sulfuric acid for the decomposition of phosphate, including impurity minerals, has been calculated. Under the optimal activation condition (70% H2SO4 of stoichiometry for the formation of monocalcium phosphate), the product was prepared with grades of P2O5free – 1.48%; Р2О5total – 14.67%; Р2О5assim.: Р2О5total = 97.88%; Р2О5water soluble: Р2О5total = 61.35%. CaOtotal – 25.72%; CaOassim.: CaOtotal = 68.12%.
© The Authors, published by EDP Sciences, 2023
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