Apparatus and method for producing pellets by layering power onto particles
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United States of America Patent
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-
Jul 21, 1992
Grant Date -
N/A
app pub date -
Mar 19, 1991
filing date -
Mar 19, 1991
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An apparatus for layering powder onto particles has a vessel in which a rotor is mounted rotatable therein around a vertical axis. The rotor is a disc with a supporting surface for supporting particles. The apparatus also has a feeder with a substantially horizontal introducing member protruding slightly into the vessel above the disc. The introducing member limits a liquid outlet and an annular powder outlet encompassing the liquid outlet. During a layering operation, the introducing member protrudes into a bed of particles lying on the rotating disc and moved by the latter. There can then be sprayed liquid and powder simultaneously onto the particles passing in proximity of the outlets. This enables layering powder onto particles to produce thereby pellets having sizes lying in a narrow range.
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Cited Art Landscape
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