| 简介 |
A method for removing one or more selected rare earth magnet(s) from an assembly comprising a plurality of rare earth magnets comprises exposing at least the selected rare earth magnet(s) 1o hydrogen gas in situ, to effect hydrogen decrepitation of said magnet(s) whereby a rare earth particulate material is produced, and separating the rare earth particulate material from the rest of the assembly. The method may be carried out by portable apparatus 20 which comprises a reaction cell 22 for attaching to a surface of the magnet 18 and/or assembly 10 to enclose a surface of the selected rare earth magnet 18, a fixing means for releasably securing the reaction cell 22 to the surface of the magnet 18 and/or assembly 10, and a hydrogen gas control system 24, 26 connectable to the reaction cell 22, which controls the supply of hydrogen gas to the reaction cell 22. The method and apparatus find application in the recovery of rare earth magnets from large assemblies such as rotors and turbines. |
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