Raw material falls down into feed hopper, and then through ring, it is divided into two parts by material-dividing plate. One enters into rotor through the center of material-dividing plate. The other falls down from outside of material-dividing plate. Material, which is thrown out by rotor at speed of 60-75m/s, hits material coming down from outside of material-dividing plate. In this way, material is crushed. Dual purpose balk cargo tray - simplicity of operation, quick switchover of feedstock modes;Key parts adopt optimization design - reducing wear and use-cost;Rotor optimization design - deepening cavity type to increase yield;Elaborately-designed Emission Mouth and Inner Curve - reducing resistance and increasing throughput.