Method and device for use in the manufacture of fibre pulp...

Details Method and device for use in the manufacture of fibre pulp... Method and device for use in the manufacture of fibre pulp...

D - Textiles, Paper

21

B

92/34

D21B 1/30 (2006.01) D21B 1/12 (2006.01)

Patent

CA 1104855

ABSTRACT OF THE DISCLOSURE Method and apparatus for producing fiber pulp of improved paper-forming characteristics from ligno-cellulose-containing material such as wood chips and the like. The pulp material is subjected to a defibrating process in at least two steps. In the first step, the pulp material is disintegrated in a de- fibrator to form a flocculent mass of initially separated and freed fibers. This flocculent mass is then passed through a screw compacting device in which it is subjected to compression of a magnitude of 1 to 5 times the volume of the initially sep- arated fibers. The compressed and highly concentrated mass of initially separated fibers is then passed into a refiner wherein the fibers are finally separated and fibrillated to form the final pulp.

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