Method and apparatus for mechanical defibration of wood

Details Method and apparatus for mechanical defibration of wood Method and apparatus for mechanical defibration of wood

2006-06-05

2010-10-26

Self, Shelley (Department: 3725)

Woodworking

Process

Mechanical cutting or shaping

Reexamination Certificate

active

07819149

ABSTRACT:
The present invention provides a novel method and apparatus for producing pulp from lignocellulosic raw material, such as wood or annual or perennial plants, by mechanical defibration. According to the invention, fibers are peeled from the wood by means of grinding grits arranged on a defibration surface, wherein at least 90% of the protrusion difference distribution between adjacent or neighboring grits on the surface belongs to a value region maximally as wide as the average grit diameter. By means of the invention, a reduction in specific energy consumption of up to 50% or even more can be obtained.

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