Rotor processor for dry powders
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United States of America Patent
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Aug 19, 2014
Grant Date -
Feb 11, 2010
app pub date -
Jul 27, 2009
filing date -
Aug 7, 2008
priority date (Note) -
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Abstract
The improved rotor processor of the present invention includes a stator with a rotatable rotor defining a rotor chamber in which particles are circulated for coating or layering. A spray gun mounted to the stator adjacent the rotor directs liquid into the rotor chamber, while a powder feed system mounted in the stator adjacent the rotor directs dry powder into the rotor chamber. The spray gun and powder feed system are spaced apart circumferentially so as to define a spray zone and a separate powder zone through which the circulating particles repeatedly and sequentially pass. The powder feed system includes a feed screw conveyor, an eductor, and a flexible conduit for delivering micronized powders, such as polymers or glidants, to the rotor chamber.
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