| 摘要 |
1,244,377. Tube mills. WEDAG WESTFALIA DINNENDAHL GROPPEL A.G. 30 Aug., 1968 [2 Sept., 1967], No. 41462/68. Heading B2A. A grinding plant particularly for heat-sensitive material securing careful drying comprises a feed unit 1 supplying material via a bucket conveyor 2 to an air classifier or cyclone 3 whose coarse output is supplied to a tube mill 4. Fines leave the cyclone via a duct 5. Fresh air from a blower 9 is drawn into the mill from the cyclone via a duct 12 and may be heated to an appropriate temperature by a hot gas generator 6. The exhaust of the cyclone 3 is passed to a dust filter 7 by a blower 8. |
