Process and a grinding stone for preparing mechanical wood pulp

Details Process and a grinding stone for preparing mechanical wood pulp Process and a grinding stone for preparing mechanical wood pulp

1979-12-07

1982-09-28

Goldberg, Howard N.

Solid material comminution or disintegration

Apparatus

With temperature modification of material

241280, 241294, B02C 1900

Patent

active

043514863

ABSTRACT:
The disclosure concerns a process for grinding wood on a grinding stone and the grinding stone which grinds the wood. The grinding stone has a central core, which may be comprised of concrete or steel. The core has a free inner space. A water supply line extends along the free inner space. Outlets from the water supply line are directed toward the periphery of the core at the grinding zone of the grinding layer. Around the core is a grinding layer for grinding the wood. The grinding layer is permeable so that water can be transmitted through it. The permeability may arise from the porosity of the material of the grinding layer itself or through the provision of bores or gaps in the grinding layer. The grinding layer may be comprised of a group of segments covering the core and the gaps may be defined between segments. The core may have bores for delivering the water to the inside of the grinding layer. The water may be heated and/or pressurized for improving grinding.

REFERENCES:
patent: 1619004 (1927-03-01), Sternkopf
patent: 2887276 (1959-05-01), Minarik
patent: 2929568 (1960-03-01), Vawter
patent: 3734419 (1973-05-01), Cryderman
patent: 3973737 (1976-08-01), Thorsell

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