... performance, light conveying efficiency, flexible process layout, easy movement and operation security. This series screw conveyor can transport all kinds ... powder, coal powder, cement, gravel, grain, small block coal, pebbles and iron scrap.Diameter of screw (mm) 160Transport length (m) 2.5 ... , coal powder, cement, gravel, grain, small block coal, pebbles and iron scrap. Screw conveyor for cement