Plastic and nonmetallic article shaping or treating: processes – Formation of solid particulate material directly from molten... – By extrusion spraying or gravity fall through orifice
Patent
1978-05-04
1980-02-26
Scovronek, Joseph
Plastic and nonmetallic article shaping or treating: processes
Formation of solid particulate material directly from molten...
By extrusion spraying or gravity fall through orifice
264DIG51, 71 64DB, 71 28, B22D 2308, C05C 900
Patent
active
041906225
ABSTRACT:
Urea prills are obtained by contacting molten urea droplets with a co-current gas stream in a prill tower and cooling and collecting the prills thus formed in a fluidized bed having a second gas stream flowing countercurrent to the prills.
REFERENCES:
patent: 496768 (1953-10-01), Oholm
patent: 3059280 (1962-10-01), Laehder
patent: 3539326 (1967-03-01), Otsuka
patent: 3795504 (1972-09-01), Wengeler
Evans Larry W.
Knudsen Herbert D.
Konkol Chris
Scovronek Joseph
Standard Oil Company (Ohio)
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