Refiner

Details Refiner Refiner

2008-11-24

2011-10-04

Rosenbaum, Mark (Department: 3725)

Solid material comminution or disintegration

Apparatus

Cooperating comminuting surfaces

C241S261300, C241S298000

Reexamination Certificate

active

08028946

ABSTRACT:
A refining surface (2) of a refiner stator (4) for a refiner for defibrating lignocellulose-containing material has a feed edge (17) oriented in the direction of the feed flow of the material to be refined, and a discharge edge (16) oriented in the direction of the discharge flow of the material refined. The surface (2) has blade bars (10) with grooves (11) therebetween, and at least one dam (12) in a groove (11). The dam has an upwardly rising guiding surface (13) from the blade groove bottom (15) for guiding the material to be refined and the material already refined out of the blade groove. The upward direction of the guiding surface (13) is from the direction of the discharge edge (16) of the refining surface (2) in the direction of the feed edge (17) of the refining surface (2).

REFERENCES:
patent: 1131272 (1915-03-01), Reynolds
patent: 4712745 (1987-12-01), Leith
patent: 6032888 (2000-03-01), Deuchars
patent: 6402071 (2002-06-01), Gingras
patent: 2006/0151648 (2006-07-01), Vuorio et al.
patent: 2007085703 (2007-08-01), None
patent: 2009068739 (2009-06-01), None
International Search Report for PCT/FI2008/050680, Mar. 2009.
Written Opinion of the International Searching Authority for PCT/FI2008/050680, Mar. 2009.

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