METHOD FOR MANUFACTURING OXIDE PERMANENT MAGNETS FROM STRONTIUM FERRITE WASTES
powder metallurgy. SUBSTANCE: method includes collection of abrasive slurry upon grinding strontium ferrite magnets, washing from lubricating and cooling liquid, drying, grinding, pressing in magnetic field, and agglomerating; prior to grinding abrasive slurry is calcined at 1200-1250 C. Calcination...
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Zusammenfassung: | powder metallurgy. SUBSTANCE: method includes collection of abrasive slurry upon grinding strontium ferrite magnets, washing from lubricating and cooling liquid, drying, grinding, pressing in magnetic field, and agglomerating; prior to grinding abrasive slurry is calcined at 1200-1250 C. Calcination is carried out in environment of aluminum oxide whose amount is 0.1% of powdered slurry mass for catalyzing phase change process. Used as slurry are grinding wastes with clean circulating water used as lubricating and cooling liquid. EFFECT: provision for saving resources due to waste recovery while retaining high magnetic properties of magnets. 3 cl, 3 tbl, 2 ex |
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