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[[File:Roll_CrusherGIF.gif |thumb|right| Principle of the Roll Crusher]] | [[File:Roll_CrusherGIF.gif |thumb|right| Principle of the Roll Crusher]] | ||
'''Roll Crushers''' are compression type crushers, and were once widely used in mining. They have, within the last 10 or so years, fallen into dis-favor among mining and processing companies. The probable reason is because the large mines require very large crushed product output with minimal cost, makes the roll crusher uncompetitive. The roll crushers are not as productive as cone crushers, with respect to volume, and they do have a little higher maintenance associated with them. Roll crushers do, however, give a very close product size distribution, and if the ore is not too abrasive, they do not have high maintenance costs. | |||
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*up to a minimum particle size of 2mm | *up to a minimum particle size of 2mm | ||
*maximum reduction ratio of 4:1 | *maximum reduction ratio of 4:1 | ||
*produces very little dust or fines | |||
*stable opera6tion | |||