Coating of particles

Details Coating of particles Coating of particles

1980-11-20

1981-09-22

Silverberg, Sam

Coating processes

Particles, flakes, or granules coated or encapsulated

Solid encapsulation process utilizing an emulsion or...

75130R, 75251, B05D 700

Patent

active

042910706

ABSTRACT:
The invention relates to the coating of particles for use, for example, as inoculants in the metallurgical field.
A fluidized bed of metallic-particles (e.g. Fe/Si, Fe/Mn of size range 50 .mu.m to 3000 .mu.m or higher) is contacted with a wash-coat comprising a suspension of a non-dispersible ceramic powder in a sol (e.g. a suspension of Al(OH).sub.3 powder in a boehmite sol). Subsequent controlled drying and firing produces a ceramic coating on the particles which has good adhesion and thermal stability and whose thickness and density can readily be controlled.

REFERENCES:
patent: 2481599 (1949-09-01), Kengel
patent: 2552204 (1951-05-01), Morrosh
patent: 3527597 (1970-09-01), Dawson

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