B - Operations – Transporting – 02 – C
Patent
B - Operations, Transporting
02
C
B02C 7/12 (2006.01) B02C 13/20 (2006.01) D21B 1/14 (2006.01) D21B 1/30 (2006.01) D21D 1/30 (2006.01) D21D 1/36 (2006.01)
Patent
CA 2328205
The object of the invention is a method for processing pulp stock derived from a pulp or paper mill, which pulp stock contains fibres and/or any other components, such as mineral components, in order to disperse the agglomerations in the pulp stock. The method is characterised in that the pulp stock is supplied to an apparatus operating according to the principle of a double action impact mill (the double action impact mill (20)). The apparatus comprises: a first rotor (11) provided with blades; a second rotor (12), which is coaxial with the first rotor and provided with blades and which is arranged to rotate in a direction being opposite to that of the first rotor; and a feeding opening (14) which opens out to the nave of the rotors. Pulp stock is supplied to the feeding opening (14) which opens to the rotor naves and is caused to flow via the blades of the rotors (11, 12) arranged within each other, to the outermost rotor ring, and to be discharged from there as a discharge flow from the apparatus. The invention also relates to an apparatus for performing the method.
L'invention concerne un procédé de traitement de pulpe d'une usine de pâte ou de papier. La pâte en question contient des fibres et/ou tout autre composant, tels que des composants minéraux, permettant de disperser les agglomérations dans la pâte. Ce procédé est caractérisé en ce que la pâte est amenée dans un appareil fonctionnant selon le principe d'un broyeur à percussion à double effet (20). Cet appareil comporte un premier rotor (11) pourvu d'aubes, un second rotor (12) pourvu d'aubes et tournant sur le même axe que le premier rotor, dans un sens opposé à celui-ci, ainsi qu'une ouverture d'alimentation (14) s'ouvrant sur les moyeux des rotors. On amène la pâte dans l'ouverture d'alimentation (14) s'ouvrant sur les moyeux des rotors pour la faire passer par les aubes des rotors (11, 12) disposées les unes dans les autres, jusqu'à l'anneau du rotor le plus à l'extérieur, d'où elle est évacuée sous forme de flux de décharge de l'appareil. L'invention concerne également un appareil permettant de réaliser ce procédé.
Huovinen Mauno
Virtanen Hannu
Megatrex Oy
Smart & Biggar
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