METHOD FOR MANUFACTURING OXIDE PERMANENT MAGNETS FROM STRONTIUM FERRITE WASTES Russian patent published in 2002 - IPC

Abstract RU 2179764 C2

FIELD: 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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RU 2 179 764 C2

Authors

Bogdan B.N.

Belyshev A.S.

Boriskova L.A.

Koptsev L.M.

Konopleva N.N.

Rastegaev V.S.

Shipko M.N.

Dates

2002-02-20Published

2000-01-05Filed