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

B - Operations, Transporting

01

J

117/45.1

B01J 8/18 (2006.01) B01J 2/16 (2006.01) C05C 9/00 (2006.01)

Patent

CA 1152389

Title: A method of making granules built up from a core and an envelope. Abstract of the disclosure: 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°, 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.

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