Compactor rolls in horizontal plane

Fig. 1 Front view of compactor rolls in horizontal plane. (From courtesy of Ellis Horwood.)...

Dehont et al. provided a simplified approach to roller compaction theory. They described that powder granules move through stages in the feed area. The material is drawn into the gap by rubbing against the roll surfaces. The densification that occurs in this area is particle rearrangement. At this stage, the speed of the powder is slower than the peripheral speed of the rollers. Fig. 1 represents compactor rolls in the horizontal plane powder is pushed vertically downward into the compaction area. 

Bepex-Hosokowa Co. compactor (Fig. 21) consists of a pair of rolls that are both fixed and not cantilevered. The rolls are mounted on a horizontal plane in fixed bearing blocks and there is a set fixed gap distance. The Bepex roll designs are concave and can be water cooled. 

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