Transactions of Nonferrous Metals Society of China, volume 31, issue 10, pages 3128-3149

Mechanism and kinetics of iron extraction from high silica boehmite–kaolinite bauxite by hydrochloric acid leaching

Pankratov Denis 2
Sokolov Artem P. 4
Mikhailova A 5
Salazar Concha Cristian 6
Rodionov Ilia 7
Publication typeJournal Article
Publication date2021-10-01
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor4.5
ISSN10036326
Materials Chemistry
Metals and Alloys
Condensed Matter Physics
Geotechnical Engineering and Engineering Geology
Abstract
The chemical and mineral compositions of bauxite recovered from the Severoonezhsk Bauxite Mine (Arkhangelsk region, Russia) were studied by XRD, ICP-OES, TG/DSC, SEM, TEM, and Mössbauer spectroscopy. The iron-containing minerals of the bauxites were found to comprise alumogoethite ( α -Fe 1– x Al x OOH), alumohematite ( α -(Fe 1– x Al x ) 2 O 3 ), alumoakaganeite ( β -Fe 1– x Al x O(OH,Cl)), and chromite (FeCr 2 O 4 ). The efficiency of Fe extraction from the bauxite by HCl leaching was 82.5% at 100 °C, HCl concentration of 10%, solid/liquid ratio of 1:10, and the process duration of 60 min, with aluminum loss from the bauxites below 4.5% of the total Al contents in the bauxite. Analysis of the kinetics of the iron leaching process proved diffusion to be the limiting stage of the process at 90–100 °C. Bauxite residue after leaching presented traces of α -Fe 1– x Al x OOH and β -Fe 1– x Al x O(OH,Cl), and most of the iron content was in the FeCr 2 O 4 . In bauxite residue after HCl leaching, in addition to iron oxide, the contents of chromium and calcium oxides significantly decreased. The iron chloride liquor after leaching contained the rare earth elements (REE) of 6.8 mg/L Sc, 4.1 mg/L Ce and 2.3 mg/L Ga.

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Valeev D. et al. Mechanism and kinetics of iron extraction from high silica boehmite–kaolinite bauxite by hydrochloric acid leaching // Transactions of Nonferrous Metals Society of China. 2021. Vol. 31. No. 10. pp. 3128-3149.
GOST all authors (up to 50) Copy
Valeev D., Pankratov D., Shoppert A., Sokolov A. P., Kasikov A., Mikhailova A., Salazar Concha C., Rodionov I. Mechanism and kinetics of iron extraction from high silica boehmite–kaolinite bauxite by hydrochloric acid leaching // Transactions of Nonferrous Metals Society of China. 2021. Vol. 31. No. 10. pp. 3128-3149.
RIS |
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TY - JOUR
DO - 10.1016/S1003-6326(21)65721-7
UR - https://doi.org/10.1016%2FS1003-6326%2821%2965721-7
TI - Mechanism and kinetics of iron extraction from high silica boehmite–kaolinite bauxite by hydrochloric acid leaching
T2 - Transactions of Nonferrous Metals Society of China
AU - Valeev, Dmitry
AU - Pankratov, Denis
AU - Shoppert, Andrei
AU - Sokolov, Artem P.
AU - Kasikov, Aleksandr
AU - Mikhailova, A
AU - Salazar Concha, Cristian
AU - Rodionov, Ilia
PY - 2021
DA - 2021/10/01 00:00:00
PB - Elsevier
SP - 3128-3149
IS - 10
VL - 31
SN - 1003-6326
ER -
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@article{2021_Valeev
author = {Dmitry Valeev and Denis Pankratov and Andrei Shoppert and Artem P. Sokolov and Aleksandr Kasikov and A Mikhailova and Cristian Salazar Concha and Ilia Rodionov},
title = {Mechanism and kinetics of iron extraction from high silica boehmite–kaolinite bauxite by hydrochloric acid leaching},
journal = {Transactions of Nonferrous Metals Society of China},
year = {2021},
volume = {31},
publisher = {Elsevier},
month = {oct},
url = {https://doi.org/10.1016%2FS1003-6326%2821%2965721-7},
number = {10},
pages = {3128--3149},
doi = {10.1016/S1003-6326(21)65721-7}
}
MLA
Cite this
MLA Copy
Valeev, Dmitry, et al. “Mechanism and kinetics of iron extraction from high silica boehmite–kaolinite bauxite by hydrochloric acid leaching.” Transactions of Nonferrous Metals Society of China, vol. 31, no. 10, Oct. 2021, pp. 3128-3149. https://doi.org/10.1016%2FS1003-6326%2821%2965721-7.
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