Refiner plates

Details Refiner plates Refiner plates

1981-05-12

1984-01-03

Rosenbaum, Mark

Solid material comminution or disintegration

Apparatus

Cooperating comminuting surfaces

241298, B02C 712

Patent

active

044238452

ABSTRACT:
An improvement in refiner discs for mechanical pulping of wood and other material is disclosed which increases wood pulp production. The improvement has at least one refiner plate set mounted on a disc to form a pair of opposing refiner plate sets. The one refiner plate set has a series of hard spots placed at different radial distances on the surface. In one process of manufacturing the plate set, a series of locations are hardened, preferably by spot welding or spot hardening on at least one raised portion of the plate set.

REFERENCES:
patent: 992000 (1911-05-01), Kihlgren
patent: 2888212 (1959-05-01), Albert et al.
patent: 3149792 (1964-09-01), Textor
patent: 3462089 (1969-08-01), Whitlow
patent: 4023739 (1977-05-01), Lampe et al.
patent: 4039154 (1977-08-01), Peterson
patent: 4061283 (1977-12-01), Kahmann
patent: 4166584 (1979-09-01), Asplund

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