Method of making granules built up from a core and an envelope

Details Method of making granules built up from a core and an envelope Method of making granules built up from a core and an envelope

1981-05-08

1982-08-10

Bernstein, Hiram

Chemistry: physical processes

Physical processes

Agglomerating

264117, B01J 818

Patent

active

043436226

ABSTRACT:
Manufacture of granules built up from a core and an envelope in a fluidized bed of nuclei. A stream of liquid containing the enveloping material is hydraulically sprayed within the bed from the bottom upwards by means of at least one hydraulic sprayer surrounded by a coaxial, annular, converging aperture through which auxiliary gas is discharged at such a vertical velocity that the conical stream of droplets is narrowed to a stream having an apex angle of less than 20.degree., and in such a quantity that a cavity of dilute fluidized phase is formed above each sprayer, which cavity is located entirely within the bed.

REFERENCES:
patent: 2586818 (1952-02-01), Harms
patent: 3120438 (1964-02-01), McIntire et al.
patent: 3231413 (1966-01-01), Berquin
patent: 3449238 (1969-06-01), Stockburger et al.
patent: 3856441 (1974-12-01), Suzukama et al.
patent: 4141316 (1979-02-01), Grun

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