The motor dives the grinding table to turn through the speed reducer At the same time,hot air comes Into the roller mill trOm the air inlet.The materials fall down the centre of grinding table from the feeder.Because of the centrifugal force,the materials move to the edge of grinding table form the centre The materials are crushed by the grinding roller when by pass of the groove on the grinding table until taken away by the airstream .Then the bigger materials fall down the grinding table and the process of crushing continues When the materials in the airstream pass the separator on the top of the mill the materials fall down the grinding table from the taper filler under the force...more>>