Continuously refining raw fibrous material to produce mechanical

Details Continuously refining raw fibrous material to produce mechanical Continuously refining raw fibrous material to produce mechanical

1975-09-02

1977-07-26

Corbin, Arthur L.

Solid material comminution or disintegration

Processes

With application of fluid or lubricant material

162 17, 162 23, 162 28, 162 29, 162 47, 162 52, 162 68, 241 28, 241 29, B02C 2326, D21B 114

Patent

active

040377920

ABSTRACT:
Raw fibrous material is preheated in a preheater in the presence of steam under a pressure greater than atmospheric pressure and then continuously introduced into a disc refiner, without prior defibration, whereby steam is generated in said disc refiner. The generated steam is continuously conducted away from said disc refiner as subsequent fibrous material is continuously being introduced into the disc refiner in order to obtain a pressure in the disc refiner which is greater than atmospheric pressure but less than the pressure in said preheater.

REFERENCES:
patent: 2957795 (1960-10-01), Stuck
patent: 3238088 (1966-03-01), Villavicencio et al.
patent: 3388037 (1968-06-01), Asplund et al.
patent: 3446699 (1969-05-01), Asplund et al.
patent: 3910505 (1975-10-01), Reinhall
"Fasserplaten" (Fiberboards), Lampert, 1967, pp. 310, 311 & 315-318.

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