Solid material comminution or disintegration – Processes – Wood and similar natural-fibrous vegetable material
Patent
1991-04-05
1993-09-28
Rosenbaum, Mark
Solid material comminution or disintegration
Processes
Wood and similar natural-fibrous vegetable material
241146, 2412591, 2412613, 241297, B02C 712
Patent
active
052480992
ABSTRACT:
A pressurized disc refiner and associated method, in which three distinct refining zones (42, 44, 46) are provided within one refiner unit (10). The refining intensity is independently controllable in each zone, in part as a result of the selective separation and redirection of steam and partially refined fibers that are discharged from the first refining zone (42) into a first separation region (68). Centrifugal force in the first separation region preferentially directs all or most of the fibers into the second refining zone (44) and an axially directed pneumatic force directs steam into a second separation region (74) on the back side of the disc. Additional separation of steam and partially refined fiber in the second separation region directs the fiber to the third refining zone (46) and draws steam directly out of the housing. A specially adapted first disc plate (14) facilitates the separation in the first separation zone (68).
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Kohler Gregory R.
Lahner William F.
Andritz Sprout-Bauer, Inc.
Husar John M.
Rosenbaum Mark
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