Apparatus for the treatment of lignocellulosic material

Details Apparatus for the treatment of lignocellulosic material Apparatus for the treatment of lignocellulosic material

1974-04-29

1976-04-06

Custer, Jr., Granville Y.

Solid material comminution or disintegration

Apparatus

Including means applying fluid to material

241 28, 241 65, 241248, 241280, B02C 2324

Patent

active

039484491

ABSTRACT:
The invention relates to the production of a wholly mechanical pulp of improved strength properties. The lignocellulosic material is fed into a substantially closed chamber where it is mechanically abraded under a power input of fifteen or more horsepower days per ton. During the abrading step, the material is maintained in an inert gaseous atmosphere of a pressure of ten to eighty psig, preferably twenty to forty psig.

REFERENCES:
patent: 1795603 (1931-03-01), Hussey
patent: 2008892 (1935-07-01), Asplund
patent: 2396587 (1946-03-01), Lowgren et al.
patent: 2657131 (1953-10-01), Messing
patent: 3076610 (1963-02-01), Rosenfeld et al.
patent: 3411720 (1968-11-01), Jones et al.
patent: 3661328 (1972-05-01), Leask
patent: 3773610 (1973-11-01), Shouvlin et al.
patent: 3808090 (1974-04-01), Logan et al.

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