Recovery of scandium from KOH sub-molten salt leaching cake of fergusonite
Publication type: Journal Article
Publication date: 2019-06-01
scimago Q1
wos Q1
SJR: 1.101
CiteScore: 9.2
Impact factor: 5.0
ISSN: 08926875
General Chemistry
Mechanical Engineering
Control and Systems Engineering
Geotechnical Engineering and Engineering Geology
Abstract
A study was carried out for recovery of scandium from KOH sub-molten salt (SMS) leaching cake of fergusonite. Major metals in the cake were rare earths (RE), K, Th, U and Ca, and minor metals were Pb, Nb, Ta, Ti, Fe, Si, Sn, Al, Bi and Mn. Scandium content was about 0.94% in the cake. Experiments for the recovery of scandium involved washing of the cake with water for potassium removal, leaching of scandium from the cake with HCl, solvent extraction with tri-butyl phosphate (TBP) and precipitation of scandium with oxalic acid. Effects of liquid-to-solid ratio and leaching temperature on leaching of scandium as well as impurities such as uranium, thorium and other rare earths such as yttrium and lanthanides were investigated, with the aim of both increasing scandium leaching and selectively pre-separating the impurities. And also, the separation characteristics of scandium and the impurities were evaluated in the solvent extraction with TBP. Finally, we proposed a process for recovery of scandium from the KOH SMS leaching cake of fergusonite.
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Total citations:
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Citations from 2024:
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Li S. C., Kim S. C., Kang C. S. Recovery of scandium from KOH sub-molten salt leaching cake of fergusonite // Minerals Engineering. 2019. Vol. 137. pp. 200-206.
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Li S. C., Kim S. C., Kang C. S. Recovery of scandium from KOH sub-molten salt leaching cake of fergusonite // Minerals Engineering. 2019. Vol. 137. pp. 200-206.
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TY - JOUR
DO - 10.1016/j.mineng.2018.11.052
UR - https://doi.org/10.1016/j.mineng.2018.11.052
TI - Recovery of scandium from KOH sub-molten salt leaching cake of fergusonite
T2 - Minerals Engineering
AU - Li, Sun Chol
AU - Kim, Sok Chol
AU - Kang, Chung Su
PY - 2019
DA - 2019/06/01
PB - Elsevier
SP - 200-206
VL - 137
SN - 0892-6875
ER -
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BibTex (up to 50 authors)
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@article{2019_Li,
author = {Sun Chol Li and Sok Chol Kim and Chung Su Kang},
title = {Recovery of scandium from KOH sub-molten salt leaching cake of fergusonite},
journal = {Minerals Engineering},
year = {2019},
volume = {137},
publisher = {Elsevier},
month = {jun},
url = {https://doi.org/10.1016/j.mineng.2018.11.052},
pages = {200--206},
doi = {10.1016/j.mineng.2018.11.052}
}