| 摘要 |
A continuous dryer for minerals and ores which employs a single horizontal screw conveyor in a cylindrical drying chamber with a plurality of external electrical heating elements surrounding the drying chamber. The screw conveyor has cut and folded flights which extend to within less than about one quarter inch from the inside wall of the drying chamber. The heating elements have integral mineral insulation, completely surround the drying chamber, and are in intimate contact with the chamber outer wall.
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