Patent ID: 6955312
Filing Date: 2005-10-18
Classification: B02C

Abstract:
1. An apparatus for comminuting rocks, comprising: a frame having a restrictive passageway with an inlet and an outlet end for relative displacement of rocks from the inlet to the outlet end; a rotary impacting device secured to the frame in the passageway so as to be journaled with respect to the frame, the rotary impacting device having at least one hammer element on an outer periphery of the device, the at least one hammer element adapted to scoop and impact rocks in the passageway to project the rocks toward the outlet of the apparatus; actuation means mounted to the frame and operationally connected to the rotary impacting device for imparting a rotation of the rotary impacting device; screening means adapted to comminute upon impact at least some of the rocks propelled thereon by the rotary impacting device, the screening means being positioned in the outlet end such that comminuted rocks exiting from the outlet end are below a predetermined size; and a throat portion between crusher means secured to the frame and the rotary impacting device upstream of the screening means, for comminution of rocks above a given size.