1. Working Principles Big lump materials in the store are first regularly conveyed into jaw crusher by vibrating feeder, then, the products are transferred to grinding chamber of the main unit thought bucket elevator. The materials in the chamber are brought up by the spade and fed into the space between the grinding roller and ring for crushing. The blower brings the air into the grinding chamber, and the crushed particles are inhaled into the classifier. Standard particles will enter the cyclone collector with the air, while the other parts will fall into the grinding chamber to regrind. The standard particles then will be separated from the air current and discharged as finished product while the air return to the blower to repeat the above circulation. 2. Features The whole equipment is highly automatic, with low operation cost, low power consumption, high capacity, low pollution and easy maintenance, which can provide you with best service. For further details, please contact us directly.