Open Access
Crystals, volume 12, issue 11, pages 1578
Recovery of Scandium, Aluminum, Titanium, and Silicon from Iron-Depleted Bauxite Residue into Valuable Products: A Case Study
Publication type: Journal Article
Publication date: 2022-11-05
Inorganic Chemistry
General Chemical Engineering
Condensed Matter Physics
General Materials Science
Abstract
Bauxite residue is a high-iron waste of the alumina industry with significant contents of scandium, aluminum, and titanium. This study focuses on the recovery of Sc, Al, Ti, and Si from iron-depleted bauxite residue (IDBR) into valuable products. Iron depletion was carried out using reduction roasting followed by low-intensity magnetic separation to enrich bauxite residue in Al, Ti, and Sc and reduce an adverse effect of iron on scandium extraction. Hydrochloric high-pressure acid leaching, aluminum precipitation by saturation of the acid leachate, solvent extraction of scandium using di(2-ethylhexyl) phosphoric acid (HDEHP) and tributyl phosphate (TBP), alkaline leaching of the acid residue with subsequent silica precipitation were used to obtain appropriate selective concentrates. As a result, scandium concentrate of 94% Sc2O3, crude alumina of 93% Al2O3, titanium concentrate of 41.5% TiO2, and white carbon of 77% SiO2 were prepared and characterized. Based on the characterization of the treatment stages and the obtained valuable products, the prospect for the application of the suggested flowsheet was discussed.
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Crystals
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Crystals
1 publication, 25%
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Journal of Environmental Chemical Engineering
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Journal of Environmental Chemical Engineering
1 publication, 25%
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Materials
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Materials
1 publication, 25%
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Journal of Environmental Management
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1 publication, 25%
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Citations by publishers
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2
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Multidisciplinary Digital Publishing Institute (MDPI)
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Multidisciplinary Digital Publishing Institute (MDPI)
2 publications, 50%
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Elsevier
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Elsevier
2 publications, 50%
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2
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Grudinsky P. et al. Recovery of Scandium, Aluminum, Titanium, and Silicon from Iron-Depleted Bauxite Residue into Valuable Products: A Case Study // Crystals. 2022. Vol. 12. No. 11. p. 1578.
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Grudinsky P., Pasechnik L., Yurtaeva A., Dyubanov V., Zinoveev D. Recovery of Scandium, Aluminum, Titanium, and Silicon from Iron-Depleted Bauxite Residue into Valuable Products: A Case Study // Crystals. 2022. Vol. 12. No. 11. p. 1578.
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TY - JOUR
DO - 10.3390/cryst12111578
UR - https://doi.org/10.3390%2Fcryst12111578
TI - Recovery of Scandium, Aluminum, Titanium, and Silicon from Iron-Depleted Bauxite Residue into Valuable Products: A Case Study
T2 - Crystals
AU - Grudinsky, Pavel
AU - Pasechnik, Liliya
AU - Yurtaeva, Anfisa
AU - Dyubanov, Valery
AU - Zinoveev, Dmitry
PY - 2022
DA - 2022/11/05 00:00:00
PB - Multidisciplinary Digital Publishing Institute (MDPI)
SP - 1578
IS - 11
VL - 12
SN - 2073-4352
SN - 0172-5076
ER -
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@article{2022_Grudinsky,
author = {Pavel Grudinsky and Liliya Pasechnik and Anfisa Yurtaeva and Valery Dyubanov and Dmitry Zinoveev},
title = {Recovery of Scandium, Aluminum, Titanium, and Silicon from Iron-Depleted Bauxite Residue into Valuable Products: A Case Study},
journal = {Crystals},
year = {2022},
volume = {12},
publisher = {Multidisciplinary Digital Publishing Institute (MDPI)},
month = {nov},
url = {https://doi.org/10.3390%2Fcryst12111578},
number = {11},
pages = {1578},
doi = {10.3390/cryst12111578}
}
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MLA
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Grudinsky, Pavel, et al. “Recovery of Scandium, Aluminum, Titanium, and Silicon from Iron-Depleted Bauxite Residue into Valuable Products: A Case Study.” Crystals, vol. 12, no. 11, Nov. 2022, p. 1578. https://doi.org/10.3390%2Fcryst12111578.