Distinctive IR-Spectroscopic Features of Functional Groups of Low-Grade Phosphorites After Microbiological and Acid Processing

Tagaev, Ilkhom; Doniyarov, Nodirjon; Asrorov, Anvar; Murodov, Islom; Usanbaev, N.Kh.; Temirov, Uktam

doi:10.30560/ls.v2n1p43

Cited by 2 publications

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“…The method was used to extract uranium at the final production stage after treatment with concentrated sulfuric acid, releasing the wet process phosphoric acid into the solution and harmful impurities. At the same time, difficulties appeared with the formation of viscosity, technologically hard-filtered pulp, and the presence of 4-6% phosphorus in the waste in the form of phosphogypsum [3], [4].…”

Section: Introductionmentioning

confidence: 99%

The Role of Medium Condition for Uranium Separation from Central Kyzylkum’s Low-grade Phosphorite after Sulfuric Acid Treatment

Tagayev¹,

Doniyarov²,

Asrorov³

et al. 2022

International Journal on Advanced Science, Engineering and Information Technology

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This article presents the results of separating radioactive elements, particularly uranium, from low-grade phosphorites of the Central Kyzylkum by low concentrated sulfuric acid solution, which is practically feasible at the Kyzylkum phosphorite combine (KPC). In world practice, uranium was extracted from phosphorite ore in the countries of the Middle East (Syria, Morocco, Algeria, Egypt) at the final stages of obtaining phosphorus fertilizers at metallurgical and chemical plants. The extraction of uranium from phosphorite ore is not practiced in Uzbekistan. The proposed method is fundamentally different from the above and is recommended to be applied at the initial stage of enrichment phosphorite ores in the enrichment plants. Studies have shown that the uranium completely passed into solution by treating phosphorite ore with weak concentrated sulfuric acid solution. Analyses of solution and sediment composition showed that the useful component, P2O5, remained in the sediment, increasing from 8.69% to 10.3%, while uranium passed into the solution with alkaline salts alkaline-earth elements. To obtain a finished product, the resulting enriched solution was added to the richer phosphorite ore. When performing the above processes, the pH of the medium was kept at the neutral level, which is of great practical importance for the implementation of this method with minimal economic costs using conventional inventory, corrosion resistance, and environmentally friendly phosphorus fertilizer.

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Section: Introductionmentioning

confidence: 99%

The Role of Medium Condition for Uranium Separation from Central Kyzylkum’s Low-grade Phosphorite after Sulfuric Acid Treatment

Tagayev¹,

Doniyarov²,

Asrorov³

et al. 2022

International Journal on Advanced Science, Engineering and Information Technology

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Acid treatment as a beneficiation method for phosphorite waste of Kyzylkum phosphorite plant

Tagaev¹,

Doniyarov²,

Аndriyko³

et al. 2022

Vopr. Khim. Khim. Tekhnol.

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This article addresses matters relating to the recycling of waste from the Kyzylkum phosphorite plant in the form of phosphorite slimes, the mass of which exceeds 3 million tons at present. The treatment of slime with sulfuric acid having the concentrations from 2 g/l to 40 g/l made it possible to determine the most optimal concentrations (up to 10 g/l), at which the salts of alkali and alkaline earth metals, uranium and other elements are separated. This method permits obtaining a richer fraction of the useful component, phosphorus(V) oxide (up to 19.1%). At the same time, the pH value of the medium remains in the neutral range. Mass spectroscopy showed that such treatment with sulfuric acid having the concentrations up to 10 g/l allows selectively dissolving carbonates without decomposing phosphates. IR spectra of phosphorite slime after acid treatment do not contain absorption bands characteristic of CO32– groups. In accordance with the obtained results, a low-cost technological scheme for the phosphorite slime utilization was developed, followed by its introduction into the production process without violating the main technological regulations. The enriched slime fraction corresponds in quality to the burdened phosphorite ore and can be used as an additional product.

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Distinctive IR-Spectroscopic Features of Functional Groups of Low-Grade Phosphorites After Microbiological and Acid Processing

Cited by 2 publications

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The Role of Medium Condition for Uranium Separation from Central Kyzylkum’s Low-grade Phosphorite after Sulfuric Acid Treatment

The Role of Medium Condition for Uranium Separation from Central Kyzylkum’s Low-grade Phosphorite after Sulfuric Acid Treatment

Acid treatment as a beneficiation method for phosphorite waste of Kyzylkum phosphorite plant

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