Procedure and apparatus for preparing hot groundwood

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

B - Operations, Transporting

27

L

92/53

B27L 11/08 (2006.01)

Patent

CA 1059810

ABSTRACT OF THE DISCLOSURE A process for preparing hot groundwood from wood chips, wherein a chip stream is conducted into a pressurized steaming chamber, where the chips reside for a new minutes and are heated to a temperature higher than 100°C, and are passed from the steaming chamber through a sluice feeder into a hot stage I grinder of closed construction, the pre-ground groundwook being conducted through a separating cyclone to a stage II grinder, the groundwood produced in the stage II grinder being passed to further treatment steps. The pre-ground groundwood is passed 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 closed construction.

271643

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