Please use this identifier to cite or link to this item:
https://elib.belstu.by/handle/123456789/48596
Title: | Enhanced acid leaching of rare earths from NdCeFeB magnets |
Authors: | Makarava, Iryna Kasach, Aliaksandr Kharytonau, Dzmitry Kurilo, Irina Laatikainen, Markku Repo, Eveliina |
Keywords: | Electrolysis Leaching Rare-earth elements NdCeFeB magnet Oxalic acid электролиз выщелачивание магнит NdCeFeB редкоземельные элементы щавелевая кислота |
Issue Date: | 2022 |
Citation: | Enhanced acid leaching of rare earths from NdCeFeB magnets / I. Makarava [et al.] // Minerals Engineering. - 2022. - 179. - 107446. |
Abstract: | Development of the effective technology for recovery of critical rare-earth elements (REEs) from end-of-life permanent magnets is one of the important technological challenges. In this study, chemical and electrochemical leaching of NdCeFeB magnets was investigated in 0.5 mol/L sulfuric acid containing varying concentration of oxalic acid. The influence of H[2]C[2]O[4] concentration on leaching efficiency and morphological properties of the NdCeFeB surface, as well as on the chemical composition and ζ-potential of the oxalate precipitate particles was discussed. Efficient separation of REEs can be achieved at H[2]C[2]O[4] concentrations of 0.05–0.20 mol/L and the maximum REE purity was 97.2%. In electrochemical leaching, the leaching rate was substantially higher than in chemical leaching, where blocking of the magnet surface by precipitate layer was observed. |
URI: | https://elib.belstu.by/handle/123456789/48596 |
Appears in Collections: | Статьи в зарубежных изданиях |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Makarava_Enhanced.pdf | 5.3 MB | Adobe PDF | View/Open |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.