Apparatus for coating small solids

Details Apparatus for coating small solids Apparatus for coating small solids

1992-02-19

1993-03-30

Chiesa, Richard L.

Coating apparatus

Projection or spray type

Coating moving mass of solid particulate work

34 57A, 118716, 118DIG5, 422142, B05C 500

Patent

active

051980290

ABSTRACT:
The present invention is directed to an apparatus useful for fluidizing small particulate solids having a diameter of less than about 50 microns in average particle size, and at least partially enveloping these small solids with a coating material or a precursor thereto. The basis apparatus of this invention includes a cross-current multi-stage fluid bed reactor having N fluid beds in flow communication with one another, wherein N.gtoreq.2.

REFERENCES:
patent: 2494337 (1950-01-01), Hemminger
patent: 3004861 (1961-10-01), Davis
patent: 3886895 (1975-06-01), Schlamersdorf
patent: 4237814 (1980-12-01), Ormos et al.
patent: 4247518 (1981-01-01), Charlet et al.
patent: 4464247 (1984-08-01), Thacker
patent: 4585673 (1986-04-01), Sigai
Dutta, et al., "Effects of the Addition of Highly Dispersed Alumina on the Cohesivity and Fluidization of Group C Powders", Nov. 1988.

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