Method and device for beating fibrous material

D - Textiles – Paper – 21 – D

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D21D 1/30 (2006.01) D21D 1/00 (2006.01)

Patent

CA 1053050

ABSTRACT OF THE DISCLOSURE Method and apparatus for coordinating the rate of feet and the moisture content of the pulp material to the heat quotients of the mechanical energy input in a refiner system in which the mois- ture-containing pulp material is introduced at an adjustable rate of feed into the central portion of an axially adjustable grinding space defined between a pair of grinding discs which rotate relative to one another within a closed housing and in which grinding space the material is propelled by centrifugal force created by the ro- tation of the discs in an annular radial path toward the periphery of the discs while being subjected to a grinding operation in an environment of steam generated by the heat produced by friction in the grinding space. The heat quotients of the mechanical energy are sensed as the pulp material progresses along its radial annular path in the grinding space and the rate of feed and moisture con- tent of the material and the width of the grinding space are co- ordinated to the sensed heat quotients to produce pulp of optimum value with minimized consumption of mechanical energy.

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