Method and apparatus for coating particulate materials with powdery materials
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United States of America Patent
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Oct 14, 1986
Grant Date -
N/A
app pub date -
May 22, 1985
filing date -
May 22, 1984
priority date (Note) -
Expired
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Abstract
A method and apparatus for introducing a powdery substance to a particulate material contained within a rotary granulator. The powdery material is contained in a feeding hopper that is positioned above a nozzle that is in communication with a source of compressed air. The compressed air issues from the nozzle and draws from the supply funnel powdery material that is conveyed through a conduit that extends into the rotary granulator and is so oriented as to introduce the powdery material to the particulate material as it is being rotated. The compressed air can be introduced in the form of pulses by periodically interrupting the flow of air to thereby control the apportionment of the powdery substance.
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