Concentration of rare-earth elements by sorption from sulphate solutions

Kenzhaliyev, B. К.; Surkova, T.Yu.; Yessimova, Dinara

doi:10.31643/2019/6445.22

Cited by 4 publications

(3 citation statements)

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“…Rheological (viscosity, limiting friction stress) and thermophysical (density, thermal conductivity, heat capacity) properties of a slip made of thermoplastic beryllium oxide were obtained on the basis of experimental data and generalized in the form of empirical formulas, as in the works [23][24][25][26].…”

Section: Resultsmentioning

confidence: 99%

Phase Transitions in Casting Process of Beryllium Oxide Slip

Kenzhaliyev¹,

Zhapbasbayev²,

Ramazanova³

et al. 2020

ARFMTS

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Beryllium oxide slip casting is used to obtain products of complex shapes of various designs. Ultrasonic activation improves the rheological properties of the beryllium oxide slip. In experiments with ultrasonic activation, physicochemical properties of a beryllium oxide slip were obtained. The calculated beryllium oxide casting data was obtained using the Balkley-Herschel model. The phase transition from liquid to viscousplastic state indicates the presence of a crystallization zone consisting of liquid and solid particles of beryllium oxide. Comparison of calculated data with experiment is presented.

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Section: Resultsmentioning

confidence: 99%

Phase Transitions in Casting Process of Beryllium Oxide Slip

Kenzhaliyev¹,

Zhapbasbayev²,

Ramazanova³

et al. 2020

ARFMTS

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“…However, this practice poses environmental challenges and occupies large areas of land [ [14], [15], [16]]. The global accumulation of red mud resulting from alumina production has reached around 1.5 billion tonnes, with this quantity increasing annually [ [17], [18], [19]]. Despite current storage methods, environmental contamination from toxic substances contained in red mud remains a persistent issue.…”

Section: Extraction From Uranium Raw Materialsmentioning

confidence: 99%

Overview of Technologies Used to Extract Scandium from Secondary Raw Materials

Baigenzhenov,

Orynbayev,

Turan

2024

KIMS/CUMR/MShKP

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The exceptional mechanical and chemical properties exhibited by scandium, characterized by its low density, high strength, and remarkable resistance to corrosion, have positioned it as a sought-after metal in diverse industrial applications. Consequently, a surge in market demand for scandium has been observed, highlighting its unique attributes compared to other metals. The Republic of Kazakhstan has identified potential sources of scandium in the waste generated by the titanium, uranium, and aluminum industries. By implementing efficient processing techniques for these production wastes, the country can effectively address the deficit of scandium while also mitigating man-made emissions, thus significantly improving the environmental landscape. This article aims to explore and evaluate contemporary methodologies that have been employed for the recovery of scandium from the aforementioned secondary sources. By examining and analyzing these techniques, we can gain insights into the most effective and sustainable approaches to harnessing scandium from waste materials in Kazakhstan. This research not only contributes to meeting market demands but also ensures the responsible utilization of scandium, benefiting not just the country's economy but also its environmental sustainability.

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“…Previously [28][29][30] it was found that a mixture of ammonium sulfate with sulfuric acid is the most optimal desorption solution for the rare-earth metals desorption from saturated Purosorb 140 cationexchanger.…”

Section: Fig 2 Change In the Partition Coefficient Depending On The Ionic Radius Of Lanthanidesmentioning

confidence: 99%

Sorption Extraction of Rare Earth Metals from Wet-Process Phosphoric Acid

Baltabekova

Kenzhaliyev

Lokhova

et al. 2021

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When apatites and phosphorites are processed, up to 30% of rare earth metals are converted into wet-process phosphoric acid. Wet-process phosphoric acid from the phosphorite treatment process differs from apatite one by impurity composition, i.e. the iron content is by 3.5 times, and calcium is by 5.0 times more. The complex composition of the wet-process phosphoric acid from the phosphorite treatment process requires additional researches to select optimal ion exchangers and technological parameters of sorption. Various aspects of sorption have been studied to select the optimal ion exchangers and technological parameters, and technological modes for desorption of rare earth metals from a cation exchanger to obtain a concentrate of rare earth metals have been completed. The method enables to extract rare earth metals without changing the composition of commercial wet-process phosphoric acid directly in the production process of the enterprises engaged in the phosphorite treatment process.

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Concentration of rare-earth elements by sorption from sulphate solutions

Cited by 4 publications

References 0 publications

Phase Transitions in Casting Process of Beryllium Oxide Slip

Phase Transitions in Casting Process of Beryllium Oxide Slip

Overview of Technologies Used to Extract Scandium from Secondary Raw Materials

Sorption Extraction of Rare Earth Metals from Wet-Process Phosphoric Acid

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