Difference between revisions of "Roll Crushers"

'''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.   

Through  the feed opening, the raw materials fall to between the two  rollers,after crushed, the final products drop naturally. When there are  unbreakable materials or the material is too hard, the roller will  concede automatically under the effects of spring and hydraulic  pressure, which will widen the clearance between the rollers and make  the hard or unbreakable so as to avoid damaging the machine. The  clearance between the two rollers can be adjusted to change the sizes of  final products. Roll crushers are sometimes used as moveable crushers attached to a crane, commonly named [[Bucket Crushers]