| US 7,344,663 B2 | ||
| Multi-nozzle for granulation and method for manufacturing granular product | ||
| Genshi Nishikawa, Chiba (Japan); and Eiji Sakata, Chiba (Japan) | ||
| Assigned to Toyo Engineering Corporation, Tokyo (Japan) | ||
| Filed on Dec. 14, 2006, as Appl. No. 11/639,106. | ||
| Claims priority of application No. 2005-369069 (JP), filed on Dec. 22, 2005. | ||
| Prior Publication US 2007/0148325 A1, Jun. 28, 2007 | ||
| Int. Cl. B29B 9/00 (2006.01) | ||
| U.S. Cl. 264—7 [264/14; 425/6; 23/313 FB; 239/567; 118/303] | 3 Claims |
| 2. A method for manufacturing a granular product comprising the steps of providing a granulator structured by a fluid bed
which fluidizes granulating-particles, an air feed pipe to introduce air, a nozzle for spraying a raw material aqueous solution
located at a center part of the air feed pipe, and a perforated plate to feed fluidization air to the fluid bed, and granulating
the raw material aqueous solution by spraying the raw material aqueous solution from the nozzle for spraying the raw material
aqueous solution into a granulation part, wherein the nozzle for spraying the raw material aqueous solution is a multi-nozzle
in which:
(1) two to six nozzle ends in a shape of triangular cone convexed upward are arranged radially on a body in a shape of triangular
cone convexed upward at an equal spacing therebetween;
(2) a spraying angle of each nozzle end is in a range from 15° to 45°, and a spraying angle of the whole multi-nozzle is in
a range from 30° to 60°; and
(3) a throughput of the multi-nozzle is in a range from 0.6 to 2.0 t/hr, and a throughput of each nozzle end is in a range
from 0.1 to 0.4 t/hr.
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