Roll Crusher's are used for additional reduction in sizes of minerals after the excavation from the quarry, after-
subjected to one or more stages of prior crushing.
CONSTRUCTION :-
A Roll Crusher consists of a heavy steel frame equipped with two alloyed steel rolls, each mounted on a separate
horizontal shaft. One of the rolls is spring loaded to provide safety against damage to the rolls when non-crushable
material passes through the machine.
To get the best possible performance out of a Roll Crusher, the feed size should be such that there is no slippage.
A ratio of 3 : 1 gives the most economical operation from the wear point of view. The maximum feed size should
also be selected in relation to Roll Dia and Type.