Method and apparatus for refining lignocellulose-containing mate

Details Method and apparatus for refining lignocellulose-containing mate Method and apparatus for refining lignocellulose-containing mate

1979-04-25

1981-11-03

Bashore, S. Leon

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

Continuous chemical treatment or continuous charging or...

162 23, 162 28, 162261, 241 28, 241246, D21D 130

Patent

active

042984254

ABSTRACT:
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 defibrator 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 separated 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.The refining is performed at a dry content of about 25-30%.

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