Fluidized bed with sloped aperture plate

Details Fluidized bed with sloped aperture plate Fluidized bed with sloped aperture plate

1980-11-26

1982-07-13

Beck, Shrive P.

Coating apparatus

Immersion or work-confined pool type

With tank structure, liquid supply, control, and/or...

118DIG5, 427185, 427213, B05C 1902

Patent

active

043388787

ABSTRACT:
A fluidized bed has an aperture plate which is inclined to the horizontal, to cause excessively large or dense particles to migrate to a collection point from which they may be removed from the particulate mass. Disruption of fluid flow through the aperture plate due to settled out particles is thus avoided. Preferably the aperture plate is made of a material which has the same permeability as the fluidized mass, thus inherently providing flow regulation necessary for even fluidization above the slope plate. To make investment casting molds, a gravity "rainsander" device is coupled with a fluidized bed. When slurry used in the mold making process drips from a pattern it falls into the fluidized bed thereby converting the errant drops into particulate balls which are conveniently removed.

REFERENCES:
patent: 2648609 (1953-08-01), Wurster
patent: 2844489 (1958-07-01), Gemmer
patent: 3097958 (1963-07-01), Morris
patent: 3567485 (1971-03-01), Lemelson
patent: 3581802 (1971-06-01), Krzyzonowski
patent: 3799112 (1974-03-01), Huteaux
patent: 3832974 (1974-09-01), Adams et al.
patent: 3963838 (1976-06-01), Setty et al.
patent: 4265296 (1981-05-01), Ostrowski

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