Apparatus for crushing or grinding of fibrous material, in parti

Details Apparatus for crushing or grinding of fibrous material, in parti Apparatus for crushing or grinding of fibrous material, in parti

1988-11-07

1990-06-26

Rosenbaum, Mark

Solid material comminution or disintegration

Apparatus

Parallel material flow through plural comminuting zones

241244, 2412591, 2412611, B02C 1912

Patent

active

049365185

ABSTRACT:
The invention relates to an apparatus for the crushing or grindign of fibrous material, in particular fibrous material wet or mixed with water, preferably chips, in particular to drum refiners.
The invention is mainly characterized in that channels for the discharge of steam are provided spaced from at least one material feed extending radially to the rotor axis or tangentially to the rotor jacket or housing shell on the grinding surfaces and optionally on the jacket supporting them, the channels piercing the grinding surfaces and optionally their supports and being provided in the working area of the grinding element provided on the surfaces, conveniently surfaces of revolution, in particular frustoconical surfaces, inclined to a rotor axis or extending normally thereto, and emptying into channels optionally provided in the bottoms of the supports and extending normally to the channels and conveniently being connected to cavities in the housing.

REFERENCES:
patent: 4401280 (1983-08-01), Reinhall
patent: 4754935 (1988-07-01), Gullichsen

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