Method of manufacturing ferromagnetic metal powder

Details Method of manufacturing ferromagnetic metal powder Method of manufacturing ferromagnetic metal powder

1979-03-13

1980-09-16

Rutledge, L. Dewayne

Metal treatment

Process of modifying or maintaining internal physical...

Magnetic materials

75 05AA, 148126, 427127, H01F 102

Patent

active

042227984

ABSTRACT:
A method of manufacturing a ferromagnetic metal powder by continuously drying and subsequently heat treating a slurry of ferromagnetic metal powder formed by wet reduction, characterized in that a non-oxidizing gas is supplied in separate streams to the two processes, and the non-oxidizing gas used in the drying and heat treatment is treated and recovered through separate circuits for recycling to the corresponding processes of drying and heat treatment. The separate circuits for recycling the non-oxidizing gas, the conditions in the separate two circuits are made optimum and independently adjustable so that a ferromagnetic powder of good properties is obtained.

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