Procedure and apparatus for preparing hot groundwood

Details Procedure and apparatus for preparing hot groundwood Procedure and apparatus for preparing hot groundwood

1977-02-08

1978-02-07

Custer, Jr., Granville Y.

Solid material comminution or disintegration

Processes

Wood and similar natural-fibrous vegetable material

241 29, 241 65, B27L 1108

Patent

active

040722740

ABSTRACT:
Procedure for preparing hot groundwood from wood chips, wherein a chip stream is conducted into a pressurized steaming chamber, where the chips stay a few minutes and are heated to a temperature higher than 100.degree. C., and from the steaming chamber through a sluice feeder into a hot grinder of enclosed construction, i.e. the stage I grinder, when the pre-ground groundwood is conducted through a separating cyclone into a stage II grinder, the groundwood derived herefrom being conducted towards further treatment steps. The pre-ground groundwood is conducted from the steam separating cyclone through a sluice feeder into the stage II grinder. The stage II grinding is carried out in a hot grinder of enclosed construction.

REFERENCES:
patent: 3016324 (1962-01-01), Textor
patent: 3411720 (1968-11-01), Jones et al.
patent: 3661328 (1972-05-01), Leask
patent: 3910505 (1975-10-01), Reinhall

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