Method of producing fiber pulp by grinding fibrous material in a

Details Method of producing fiber pulp by grinding fibrous material in a Method of producing fiber pulp by grinding fibrous material in a

1978-08-21

1980-12-02

Bashore, S. Leon

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

Mechanical defibration in the presence of heated gas or gas...

162 24, 162 26, 162 61, 241 18, 241 28, 241245, D21B 114

Patent

active

042369592

ABSTRACT:
The invention relates to a method in or relating to grinding of vegetable material in a grinding apparatus equipped with discs mounted rotatably relatively one another in a casing, within which a superatmospheric pressure is maintained by steam. This steam is introduced into the casing together with the vegetable material to be ground through a central inlet into an interspace defined by the discs. The material and the steam pass radially outward through said interspace. Immediately on departure from the interspace the ground pulp is received by an atmosphere of a non-condensable gas, the action of which gives the final product desired properties.

REFERENCES:
patent: 2008892 (1935-07-01), Asplund
patent: 2561043 (1951-07-01), Ayers
patent: 2717195 (1955-09-01), Armstrong
patent: 3388037 (1968-06-01), Asplund
patent: 3661328 (1972-05-01), Leask
patent: 3725193 (1973-04-01), Montigny et al.
patent: 3741863 (1973-06-01), Brooks
patent: 3765611 (1973-10-01), Steiniger
patent: 3808090 (1974-04-01), Logan et al.
patent: 3847363 (1972-11-01), Reinhall
patent: 3910505 (1975-10-01), Reinhall

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