Method and system for recovering magnetic grains from sintered magnets or plastic magnets

Method and system for recovering magnetic grains from sintered magnets or plastic magnets

−1 1 1 2 2 Disclosed is a method and a device for retrieving, from an object A, elements G present in a matrix M, the method including at least the following steps: bringing said abject A into contact with a dense fluid Fd with a molar mass greater than 2 g molunder temperature Tand pressure Pcondit...

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Hauptverfasser: UNIVERSITE DE ROUEN NORMANDIE, INSTITUT NATIONAL DES SCIENCES APPLIQUEES DE ROUEN NORMANDIE, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE
Format: Patent
Sprache:eng
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Zusammenfassung:−1 1 1 2 2 Disclosed is a method and a device for retrieving, from an object A, elements G present in a matrix M, the method including at least the following steps: bringing said abject A into contact with a dense fluid Fd with a molar mass greater than 2 g molunder temperature Tand pressure Pconditions suitable for transforming the intergranular phase and for releasing the elements G, modifying the temperature Tand/or pressure Pvalues to stop the reaction transforming the intergranular phase, and recovering the elements G separated front the matrix M.