Patent ID: 8777141
Filing Date: 2014-07-15
Classification: B02C,Y02P

Abstract:
1. Roller mill comprising a virtually horizontal grinding track on a rotating grinding pan, having stationary grinding rollers rotatably fixed on roller shafts, the grinding rollers roll on a grinding bed formed by grinding material to be comminuted on the grinding track, and stationary preparation rollers rotatably fixed on roller shafts between the grinding rollers, the preparation rollers compress and remove air from the grinding material, the preparation rollers being positioned in such a way that the grinding material fed spirally to the grinding rollers is completely rolled over and compressed, the preparation rollers being variably positioned at a distance S from an outer grinding track edge or from a retention rim of the grinding pan and the distance S extending between the outer grinding track edge or the retention rim of the grinding pan and an outer side delimitation of the running surface of the preparation rollers.