Application prospect of advanced oxidation technology in wet process phosphoric acid production

Liu, Xinxin; Wu, Fang; Qu, Guangfei; Jin, Caiyue; Liu, Ye; Kuang, Lingrui; Li, Hailin; Chen, Xiuping; Wang, Zuoliang; Cheng, Yinhan

doi:10.1016/j.jece.2022.108868

Cited by 20 publications

(3 citation statements)

References 147 publications

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“…Relatively few works are devoted to the issue of phosphoric acid extraction by solvents. N-butanol, isobutanol and isoamyl alcohol are widely used for the purification of wet-process phosphoric acid from metal cations and fluorine [17,18].…”

Section: Mineral Fertilizer Companies In Central Asia and Kazakhstan ...mentioning

confidence: 99%

Study of the Process of Concentration of Wet-Process Phosphoric Acid on the Basis of Karatau Phosphorites

Abilkasova,

Akhmetova,

Kalimoldina

et al. 2024

Preprint

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The article presents data on research of processes of obtaining concentrated phosphoric acid from Karatau phosphate rock. The research of purification of wet-process phosphoric acid by the method of liquid extraction with organic solvents is given. The influence of magnesium salts and sulfuric acid as impurities on the distribution factor of phosphoric acid is determined. It is shown that with increasing the initial concentration of phosphoric acid from 5.38 to 25.61% P2O5, the distribution factor at 25°C increases from 0.178 to 0.436 for n-butyl alcohol, from 0.06 to 0.183 for isoamyl alcohol, and from 0.120 to 0.320 for tributyl phosphate. Increasing the temperature from 25 to 60°C had little or no effect on the distribution factor. It was determined that the distribution factors of phosphoric acid depend on the initial concentration of phosphoric acid in the presence of sulfuric acid. It is shown that phosphoric acid is extracted better with n-butanol. Extraction of phosphoric acid with n-butanol on the principle of counterflow with subsequent azeotropic distillation of the solvent allows to obtain relatively pure and highly concentrated (56-63% of P2O5) phosphoric acid. The process of dehydration of phosphoric acid in the presence of sulfuric acid in the mixture was studied.

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Section: Mineral Fertilizer Companies In Central Asia and Kazakhstan ...mentioning

confidence: 99%

Study of the Process of Concentration of Wet-Process Phosphoric Acid on the Basis of Karatau Phosphorites

Abilkasova,

Akhmetova,

Kalimoldina

et al. 2024

Preprint

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“…The chemical concentration of phosphorites based on the extraction of calcium into solution was shown in [13]. Production of phosphoric acid from phosphate concentrates is carried out using sulfuric, nitric, hydrochloric, fluorosilicic, and hydrofluoric acids [14][15][16][17]. Despite the fact that the nitric acid extraction makes it possible to obtain 27-35% Р2О5 phosphoric acid, hydrochloric acid extraction -55-58% Р2О5 phosphoric acid, and fluorosilicic acid one -25-30% Р2О5 phosphoric acid, the main method for producing wet phosphoric acid is decomposition of phosphate concentrates with a mixture of aqueous solutions of sulfuric and phosphoric acids according to the equation:…”

Section: Introductionmentioning

confidence: 99%

Electric smelting of phosphorites with production of a ferroalloy, calcium carbide and sublimation of phosphorus

Uteyeva,

Shevko,

Aitkulov

et al. 2023

EJSU

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The article presents the results of a study of the interaction of phosphorites from the Chulaktau deposit of the Karatau basin with coke and steel shavings. The studies were carried out by computer thermodynamic modeling using the HSC-10 software package, together with mathematical planning of experiments, as well as by electric phosphorite melting in an electric arc furnace. On the basis of the conducted studies it was established that the joint formation of intermediate products from the systems Ca3(PO4)2-SiO2-C-Fe is possible at the temperature ˃ 1635-1702ºC. Based on the obtained volumetric and planar images of the coke and steel shavings effect on the technological parameters of the phosphorite's electric smelting, it was found that in order to produce FS25 grade ferrosilicon containing 20-30% of Si and calcium carbide with a capacity of 245.1-248.1 dm 3 /kg (2 nd grade), the process should be carried out in the presence of 52-58% of coke and 24.4-38% of steel shavings. In this case, the extraction degree of silicon into the ferroalloy was 70-80%, and calcium into calcium carbide -60-70%.

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“…REEs take the place of calcium ions in the apatite lattice due to their similarity in the ionic size (Ait Brahim et al, 2022;Wu et al, 2018). Commercial phosphoric acid is mainly produced by wet production process, in which phosphate rock is treated with sulfuric acid to produce liquid phosphoric acid (as a main product) and solid phosphogypsum as a byproduct (Liu et al, 2022). During the wet production process, REEs in the phosphate rock is distributed between the two phases, whereas about 20% exist in the liquid phosphoric acid, while about 80% transferred to the phosphogypsum (Battsengel et al, 2018;Lütke et al, 2022;Roshdy et al, 2023).…”

Section: Introductionmentioning

confidence: 99%

Leaching of rare earth elements from phosphate rock using sulfuric acid: Process optimization and kinetic studies

YOUSSEF,

ROSHDY,

EL-MAADAWY

et al. 2023

Nuclear Sciences Scientific Journal

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Rare earth elements (REEs) are crucial raw materials for 'smart' electronic devices and emerging renewable energy resources. Accordingly, the global attention for the secondary REEs resources such as phosphate rock is increased. Recognizing effective leaching of REEs from phosphate rock is essential from a strategic perspective for addressing the world demand highly growth rate. The present study investigates the leaching of REEs from phosphate rock using sulfuric acid. The impact of the main variables on the leaching performance was examined. Design of experiments (DoE) methodology was applied for optimization the REEs leaching process. The anticipated data declare that about 96.6% leaching percent could be achieved according to the following conditions: 1.5 M sulfuric acid concentration, 30 mL/ g as liquid/ solid ratio, 55 o C reaction temperature and stirring time of 1.0 hr. shrinking core model (SCM) was applied to explore the kinetic attitude of REEs leaching process. The exhibited results deduced that leaching process is well depicted using the ash layer diffusion kinetic model. In addition, the activation of energy of REEs leaching process was found to be equal 9.01 kJ/mol.

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Application prospect of advanced oxidation technology in wet process phosphoric acid production

Cited by 20 publications

References 147 publications

Study of the Process of Concentration of Wet-Process Phosphoric Acid on the Basis of Karatau Phosphorites

Study of the Process of Concentration of Wet-Process Phosphoric Acid on the Basis of Karatau Phosphorites

Electric smelting of phosphorites with production of a ferroalloy, calcium carbide and sublimation of phosphorus

Leaching of rare earth elements from phosphate rock using sulfuric acid: Process optimization and kinetic studies

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