Tapered-End Tube

A tapered-end tube, as used in batch-type rotary tube furnaces, is a processing tube whose discharge end gradually narrows in diameter to facilitate controlled and efficient material removal. The tapered geometry directs powders or particulate materials toward the outlet, helping them flow smoothly and reducing the risk of buildup or spillage. This design is especially beneficial for handling fine, dispersible substances such as nanotubes, specialty powders, or catalysts, which can be difficult to remove from straight-ended tubes. By enabling clean discharge with minimal residue—often achieved with a light tap—the tapered-end tube eliminates the need to tilt, invert, or otherwise disturb the furnace, preserving process integrity and preventing contamination. It also streamlines unloading between runs, improving operational efficiency in both laboratory and pilot-scale applications.