Abstract
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.
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Original Russian Text © E.G. Polyakov, A.S. Sibilev, 2015, published in Khimicheskaya Tekhnologiya, 2015, Vol. 16, No. 5, pp. 303–309.
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Polyakov, E.G., Sibilev, A.S. Recycling rare-earth-metal waste using hydrometallurgical methods. Theor Found Chem Eng 50, 607–612 (2016). https://doi.org/10.1134/S0040579516040266
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DOI: https://doi.org/10.1134/S0040579516040266