| 摘要 |
The invention relates to the grinding (beating) of fibrous material in devices with grinding surfaces moving relative to one another, it being possible to reduce drastically the energy consumption by means of a combination of measures which essentially comprise reducing the grinding frequency and increasing the dwell-time of the fibres between the grinding surfaces. These surfaces are of cylindrical or conical design and the major part of the steam produced during grinding is simultaneously released from the grinding space. The invention as such has great significance for the reduction of costs in the production of cellulose, especially of high-yield mechanical pulp.
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