METHOD OF RECOVERING USEFUL MATERIALS FROM SCRAP OF RARE EARTH-IRON-BORON MAGNET

THE INVENTION PROVIDES A METHOD FOR RECOVERING USEFUL MATERIALS FROM RARE EARTH-IRON-BORON BASED MAGNET SCRAP THAT ALLOWS EFFICIENT RECOVERY OF IRON AND BORON AS FERROBORON AND RARE EARTH ELEMENTS AS OXIDE, FROM RARE EARTH-IRON-BORON BASED MAGNET SCRAP. THE METHOD INCLUDES THE STEPS OF OXIDIZING RAR...

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Bibliographische Detailangaben
Hauptverfasser:	KANEKO AKIHITO, OHRAI HIROSHI
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS FERROUS OR NON-FERROUS ALLOYS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS METALLURGY PRETREATMENT OF RAW MATERIALS PRODUCTION AND REFINING OF METALS TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Zusammenfassung:	THE INVENTION PROVIDES A METHOD FOR RECOVERING USEFUL MATERIALS FROM RARE EARTH-IRON-BORON BASED MAGNET SCRAP THAT ALLOWS EFFICIENT RECOVERY OF IRON AND BORON AS FERROBORON AND RARE EARTH ELEMENTS AS OXIDE, FROM RARE EARTH-IRON-BORON BASED MAGNET SCRAP. THE METHOD INCLUDES THE STEPS OF OXIDIZING RARE EARTH-IRON- BORON BASED MAGNET SCRAP IN AN OXYGEN-CONTAINING ATMOSPHERE, PREPARING A MIXTURE FOR THERMIT REACTION CONTAINING THE OXIDIZED MAGNET SCRAP AND ALUMINUM AND/OR AN ALUMINUM ALLOY, EFFECTING THERMIT REACTION OF THE MIXTURE FOR THERMIT REACTION FOR GENERATING FERROBORON AND SLAG, AND SEPARATING THE FERROBORON OBTAINED THROUGH THE THERMIT REACTION FROM THE SLAG.