Controlling beating of fibrous material in a refiner

Details Controlling beating of fibrous material in a refiner Controlling beating of fibrous material in a refiner

D - Textiles, Paper

21

B

D21B 1/14 (2006.01) D21D 1/20 (2006.01) D21D 1/30 (2006.01)

Patent

CA 2250213

Methods and apparatus are disclosed for controlling the beating of fibrous material to be treated in a refiner. The method includes measuring a property of the fibrous material to be treated in the refiner having refiner disks, measuring the temperature or pressure in the beating zone between the disks, and altering the temperature in the beating zone based upon the measured property of the fibrous material treated in the refiner. The apparatus disclosed includes pressure and temperature gauges for measuring the pressure and temperature in the beating zone, gauges for measuring a property of the fibrous material to be treated in the refiner, a computer to compare the measured values of the temperature or pressure with desired values for these parameters, and a controller for altering the temperature in the beating zone based upon the measured value of the property of the fibrous material treated in the refiner.

L'invention concerne un procédé de commande du raffinage dans un raffineur, caractérisé en ce que pour agir sur les différents paramètres qualitatifs de la masse raffinée, on régule la pression appliquée sur les disques de raffinage du raffineur, le débit d'alimentation en copeaux et celui en eau de la buse, au moyen de valeurs obtenues à partir des pressions et températures mesurées dans la zone de raffinage. L'invention concerne également un agencement servant à mettre en oeuvre ce procédé.

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