Patent ID: 7168645
Filing Date: 2007-01-30
Classification: B02C

Abstract:
1. A lifting wall for a tube mill, comprising: a front face which is provided in inlet openings through which material being ground passes into the wall, a rear face with discharge openings through which the material being ground which is located in the lifting wall is discharged, a central air duct for an air stream which is led through the tube mill, wherein the air duct has an air intake opening in a front face and an air outlet opening in a rear face of the lifting wall and the discharge openings are disposed in an annular region around the air outlet opening, and a discharge means with lifting vanes which transport the material being ground to the discharge openings by rotary movement of the tube mill, wherein the lifting vanes are disposed obliquely with respect to a radial direction of the lifting wall, and the lifting vanes are substantially flat and bent like blades in a region of the discharge openings.