Extraction of Rare-Earth Metals During the Systematic Processing of Diaspore-Boehmite Bauxites / Loginova I.V., Shoppert A.A., Chaikin L.I. // Metallurgist. - 2016. - V. 60, l. 1-2. - P. 198-203.

ISSN:
00260894
Type:
Article
Abstract:
An integrated technology is proposed for processing diaspore-boehmite bauxites and extracting their useful components. It is established that sintering bauxite with a caustic alkali increases the quantities of rare-earth metals that are recovered. Experiments showed that the sintering of bauxite with a caustic alkali must be done with no more than 10–15% moisture in the charge at the optimum temperature of 200°C. Leaching of the sinter cake with water or a dilute aluminate solution forms high-iron red mud with low concentrations of alkali and alkaline-earth metals. Leaching the mud with a dilute inorganic acid makes it possible to extract up to 90% of the rare-earth metals, including scandium oxide. © 2016, Springer Science+Business Media New York.
Author keywords:
bauxite; caustic alkali; rare-earth metals; red mud; scandium oxide; sintering
Index keywords:
Corundum; Leaching; Metal recovery; Metals; Rare earth elements; Rare earths; Refractory materials; Scandium; Sintering; bauxite; caustic alkali; Rare earth metals; Red mud; Scandium oxide; Extraction
DOI:
10.1007/s11015-016-0273-z
Смотреть в Scopus:
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Link https://www.scopus.com/inward/record.uri?eid=2-s2.0-84968610601&doi=10.1007%2fs11015-016-0273-z&partnerID=40&md5=2d7db37c8e1a4d16079c15aad74a7dd0
Affiliations Ural Federal University, Ekaterinburg, Russian Federation
Author Keywords bauxite; caustic alkali; rare-earth metals; red mud; scandium oxide; sintering
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Correspondence Address Loginova, I.V.; Ural Federal UniversityRussian Federation; email: loginova_irina@mail.ru
Publisher Springer New York LLC
Language of Original Document English
Abbreviated Source Title Metallurgist
Source Scopus