| 摘要 |
An apparatus for drying granular or pulverulent material, particularly moist sand. It includes a cylindrical drying chamber (1) with a material supply opening (15) situated at one end portion, and a material separator means (5) at its other end portion, an inlet aperture (4) in the drying chamber for tangential inflow of a drying gas such as air, and an outlet opening (5a) situated in association with the material separator means (5) for taking off the drying gas. A helical through flow of the drying gas is achieved in the drying chamber, such that the material is entrained and dried by the drying gas during the through flow. In accordance with the invention the drying gas inlet aperture comprises a gap (4) at the drying chamber wall (11), this gap extending axially along at least the major portion of the length of the drying chamber (1), and the material supply opening (15) is similarly situated at the drying chamber wall (11), namely coinciding with, or in the circumferential region adjacent the drying gas inlet gap (4). |
