Device for the fractionation of pulp

Details Device for the fractionation of pulp Device for the fractionation of pulp

B - Operations, Transporting

03

B

209/84

B03B 5/00 (2006.01) D21D 5/06 (2006.01) D21D 5/16 (2006.01)

Patent

CA 2011996

Abstract The invention relates to a device for the fractionation of pulp, having a chamber (1) which has a circular cross sec- tion and has in its upper section an inlet (2) for the pulp to be fractionated and in its lower section an outlet (3) for the first fraction. In addition, the chamber (1) has a screen which is rotatable about its vertical axis (7), has a circular horizontal cross section and is closed at its ends in relation to the chamber, the screen having on its circumference a plurality of apertures and inside it an outlet (4) for the second fraction. In order to prevent clogging, the circumferential wall of the screen (5) is made up of substantially parallel laminae (8, 9), secured one above the other at a distance from one another, the outer edges of the laminae (8) being oriented obliquely downward.

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