Two rollers are driven by two electric motors, and for the opposite direction. Ore is feeding from the upper, broken in two roller’s gap. Because of the metal mines use the smooth roll surface, so the role is mainly broken by the crushing.also with the  grinding function(when the tooth surface ,mainly broken by the split). After crushing the material discharged by gravity itself. This crusher is characterized by only one pressure between the two rollers, , so it has less over crushing phenomenon.
Roll crusher features simple structure, compact and lightweight, reliable, inexpensive, and easy maintenance, and uniform size crushing, grinding small, fine particle size (which can be broken to 3.0mm below). Therefore, suitable for brittle materials and for handling viscous materials (such as tungsten ore), as used in the middle and fine crushing. Roll crusher main disadvantage is the low processing power.

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