Grinding apparatus

Details Grinding apparatus Grinding apparatus

D - Textiles, Paper

21

D

92/43

D21D 1/30 (2006.01)

Patent

CA 1053049

ABSTRACT OF THE DISCLOSURE A grinding apparatus for producing ligno-cellulose pulp, in which the pulp material, such as wood chips or bagasse, is ground in an environment of steam between a rotating grinding disc and a non-rotating grinding disc enclosed within a housing. Each disc comprises a series of peripherally disposed, radially extending segments provided with ridges and intervening grooves forming opposing grinding surfaces and defining therebetween a grinding space of predetermined width which merges with a central feed-in zone from which the pulp material is propelled by centri- fugal force created by the rotating disc, radially outwards through the grinding space. The rotating disc is shaped so as to cause the centrifugal force to fling the pulp material towards the nonrotating disc to thereby create passage means adjacent the surface of the rotating disc through which the steam escapes from the grinding space substantially free of pulp material, the radially outward movement of which is retarded by the non rotating disc with resultant improved grinding effect.

258865

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