Classifying – separating – and assorting solids – Plural – diverse separating operations – Gaseous suspension and sifting
Patent
1992-09-18
1993-11-23
Olszewski, Robert P.
Classifying, separating, and assorting solids
Plural, diverse separating operations
Gaseous suspension and sifting
209 31, 2091392, 209467, 209303, 1311092, B07B 902
Patent
active
052635899
ABSTRACT:
A stemmery discard of tobacco and soil particles is fed to an air/centrifugal separator in which a fraction of smaller tobacco particles is recovered with a low amount of soil. The residue from that separator is fed to a screen separator in which a fraction of larger tobacco particles is recovered with a low amount of soil. A residue from the rotary screen separator is fed to a gravity separator which recovers as much tobacco as possible without exceeding a preselected amount of soil. The screen separator may comprise a first separator screen to separate out a fraction of larger tobacco particles, and a second screen to separate out a fraction of smaller tobacco particles from the particles falling through the first screen; the particles retained by the second screen would be sent to the gravity separator, and the separated-out smaller particles would be discarded.
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Olszewski Robert P.
Philip Morris Incorporated
Reichard Dean A.
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