Method for regulation of grinding process in a pocket grinder

Solid material comminution or disintegration – Processes – Wood and similar natural-fibrous vegetable material

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241 20, 241 34, 241282, B02C 2318

Patent

active

046887253

ABSTRACT:
A method of regulating a grinding process in a pocket grinder pressing a wood batch in at least one pocket against a rotating grindstone with a grinding plate movable in the pocket calculates the apparent pulp quantity produced at measuring points at fixed intervals of the grinding stroke and changes in the wood batch density which occur during the grinding stroke. The value thus calculated is compared with a target value for the pulp quantity to be produced and the grinding process regulated thereby to reach the target value. To make the pulp quantity produced as even as possible, the calculated value of the apparent pulp quantity produced is corrected in relation to the hydraulic pressure used during the grinding stroke.

REFERENCES:
patent: 3690568 (1972-09-01), Alexander
patent: 3693891 (1972-09-01), Remmer
patent: 3776476 (1973-12-01), Sandblom et al.
patent: 4515318 (1985-05-01), Savonjousi
patent: 4541571 (1985-09-01), Karna et al.

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