B - Operations – Transporting – 03 – B
Patent
B - Operations, Transporting
03
B
209/20, 209/50
B03B 5/00 (2006.01) B03B 5/74 (2006.01) D21D 5/22 (2006.01)
Patent
CA 1238014
ABSTRACT Fractionation apparatus is disclosed which utilizes a rapidly rotating disk which receives a liquid suspension of particles to be separated onto its rotating face surface. When the film of liquid and particles on the rotating face surface reaches the peripheral edge of the face, particles above a certain size are radially ejected while smaller particles and the liquid are carried over the edge onto the surface of a depending rim. The suspension of smaller particles and liquid is carried down the rim to the rim edge at which point the smaller particles and liquid are disengaged. A separator wall may be interposed between the two streams of particles emanating from the disk to provide a physical separation of the larger and smaller particles once they have left the disk. The characteristics of the face surface, the angle of the rim with respect to the face, the disk speed, suspension feed rate, and other operating conditions can be selected such that highly efficient fractionations of particle suspensions, such as wood pulp slurries, can be obtained about a selected break point particle size.
426752
Crosby Edwin J.
Oroskar Anil R.
Borden Ladner Gervais Llp
Wisconsin Alumni Research Foundation
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