Apparatus for production of spherical grain ferrite powder

Details Apparatus for production of spherical grain ferrite powder Apparatus for production of spherical grain ferrite powder

1978-01-03

1982-10-05

Bernstein, Hiram H.

Concentrating evaporators

Spray type

Gaseous current

159 45, 23313R, 423594, B01D 118

Patent

active

043527175

ABSTRACT:
Apparatus for producing substantially spherical grain ferrite powder comprising a vertical cylindrical vessel in which a slurry of ferrite-forming powdered raw materials in alcohol is sprayed under applied pressure through a spray nozzle into a high temperature atmosphere of between 700.degree.-1500.degree. C. to allow the combustion of sprayed alcohol therein, thereby instantaneously producing spherical grain-ferrite powder. A hot air guide is provided along the inner surface of the wall of the vertical vessel extending upward in a spiral for providing a hot air current rising spirally upwardly within the vessel to provide a high temperature atmosphere above the spray nozzle.

REFERENCES:
patent: 3378335 (1968-04-01), Ellis et al.
patent: 3474849 (1969-10-01), Inchausti
patent: 3896216 (1975-07-01), Pagheralli et al.
Jl. of the Am. Ceramic Soc.-Eionomus, vol. 38, No. 7, 1955, pp. 241-244.

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