Shear consists of a trimming or cleaving action rather than the rubbing action associated with attrition. Shear is usually combined with other methods. For example, single roll crushers employ shear together with impact & compression. Shear crushing is normally called for under these conditions:
- When material is somewhat friable and has relatively low silica content
- For primary crushing with a reduction ratio of 6 to 1
- When a relatively coarse product is desired, usually larger than (38mm) top siz
single Roll Crusher
single Roll Crushers reduce large input by a combination of shear, impact and compression. They are noted for low headroom requirements and large capacity.
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