Recycling rare-earth-metal waste using hydrometallurgical methods

The present review describes the state of the problem of extracting rare earth metals from secondary raw materials, such as high-coercivity magnets, nickel–metal hydride batteries (NiMH), and phosphors of coatings of fluorescent lamps. Methods for waste processing with mineral acids and other solven...

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Bibliographic Details
Published in:Theoretical foundations of chemical engineering 2016-07, Vol.50 (4), p.607-612
Main Authors: Polyakov, E. G., Sibilev, A. S.
Format: Article
Language:English
Subjects:
Chemistry
Chemistry and Materials Science
Coercivity
Industrial Chemistry/Chemical Engineering
Selected Articles from the Journal Khimicheskaya Tekhnologiya
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Summary:The present review describes the state of the problem of extracting rare earth metals from secondary raw materials, such as high-coercivity magnets, nickel–metal hydride batteries (NiMH), and phosphors of coatings of fluorescent lamps. Methods for waste processing with mineral acids and other solvents, the removal of associated impurities from rare-earth components, separation, and deep purification (mainly by solvent extraction) have been considered. Data on the industrial applications of hydrometallurgical processes for rare earth metals recycling have been presented.
ISSN:0040-5795
1608-3431
DOI:10.1134/S0040579516040266