Disc refiner having means for removing gaseous media from pulp s

Details Disc refiner having means for removing gaseous media from pulp s Disc refiner having means for removing gaseous media from pulp s

1976-05-28

1978-04-04

Lake, Roy

Solid material comminution or disintegration

Apparatus

Cooperating comminuting surfaces

241247, B02C 711

Patent

active

040822338

ABSTRACT:
A grinding apparatus in which lignocellulosic material is ground between a pair of discs which rotate relatively to one another in a pressurized housing. The stock is advanced by means of a screw feeder, through a central opening in the disc housing and introduced into the grinding space between the discs under maintenance of the pressure within the housing. Excessive high-pressure steam or other gas generated during the grinding process is separated from the ground stock, which is returned to the grinding space by centrifugal force, while the steam or other gas freed of stock particles is discharged without interfering with the stock inflow.

REFERENCES:
patent: 2561043 (1951-07-01), Ayers
patent: 3441227 (1969-04-01), Fisher
patent: 3845909 (1974-11-01), Johansson
patent: 3847363 (1974-11-01), Reinhall

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