Classifying – separating – and assorting solids – Fluid suspension – Liquid
Patent
1997-08-04
2000-02-15
Nguyen, Dean T.
Classifying, separating, and assorting solids
Fluid suspension
Liquid
209453, 209705, 162 52, 162 55, 162246, 2105121, B04C 300
Patent
active
060242272
ABSTRACT:
Dense, tramp material, is efficiently separated in a comminuted cellulosic fibrous material feed system, for example in a chemical cellulose digester feed system, in a simple but effective matter. By merely utilizing a generally vertical conduit and a slurry flow within it (which may be augmented by high speed liquid introduction), that is caused to turn in a radiused path, centrifugal force allows separation of the tramp material into a cavity beneath the radius transition without requiring any mechanical element to engage the slurry. Appropriate purges, baffles, and discharge mechanisms may be provided. Alternatively, a tramp material separator may be built into an otherwise conventional metering screw in a digester feed system, or one or more centrifugal separators can be provided downstream of the slurry pump in a chip slurry transport system or digester feed system.
REFERENCES:
patent: 4151083 (1979-04-01), Dove
patent: 4280902 (1981-07-01), Jacobsen et al.
patent: 4737274 (1988-04-01), Jacobsen et al.
patent: 4743338 (1988-05-01), Prough
patent: 5672245 (1997-09-01), Andtbacka et al.
MC.RTM. Tramp Material Separator, Kamyr Inc. Bulletin No. KGD 1795-WN 386.
Digester Update 4.sup.th Edition, Sep. 1981, Kamyr, Inc., Revised as of Jul., 1983.
Bilodeau Vic L.
Chasse R. Fred
Prough James R.
Stromberg C. Bertil
Walley Craig A.
Ahlstrom Machinery Inc.
Nguyen Dean T.
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