Disk disperger

Fig. 4.51 Disk disperger (opened) showing the fiiiings (source Voith).

The fiUings of a disk disperger (Fig. 4.53) usually have intermeshing teeth or sometimes refiner-type bars. The rotor/stator element spacing is 1 mm or less, peripheral speed is about 50 to 100 m s . The specific energy demand is 50 to 80 kWh in certain cases up to 150 kWh r. Disk dispergers are always operated at elevated temperatures otherwise the loss in freeness would be considerable. This effect may have use for HC refining of recycled fibers (see Section 4.2.5). 

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