Refining element

Details Refining element Refining element

1976-03-03

1977-08-02

Lake, Roy

Solid material comminution or disintegration

Apparatus

Cooperating comminuting surfaces

241296, B02C 708, B02C 712

Patent

active

040391540

ABSTRACT:
Refining elements for use in the refining of fibrous materials, such as cellulose pulps and the like, are disclosed. Specifically, the refining elements disclosed comprise a pair of refining zones disposed in a direction of flow of the fibrous materials through the refining element, both refining zones including both grooves and ridges on the face thereof, and specifically wherein the ratio of the width of the grooves to the width of the ridges in the first refining zone is greater than the ratio of the width of the grooves to the width of the ridges in the second refining zone. Preferably, the number of ridges in the second refining zone is less than that in the first refining zone, and at least three such refining zones may also be included in the refining element.

REFERENCES:
patent: 2035994 (1936-03-01), Sutherland, Jr.
patent: 2156321 (1939-05-01), Sutherland, Jr.
patent: 2654295 (1953-10-01), Sutherland
patent: 2776800 (1957-01-01), Uschmann
patent: 3149792 (1964-09-01), Textor
patent: 3815834 (1974-06-01), Gilbert
patent: 3910511 (1975-10-01), Leider et al.

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