摘要 |
An apparatus for collecting foreign materials such as rocks and tramp iron from material fed to a rotary dryer, wherein the material is dropped into the dryer at an intake end for tumbling within the dryer in a stream of drying gas flowing axially through the dryer. A trough is positioned spaced downwardly and beneath the intake for catching the heavy foreign materials dropping downwardly, and the foreign materials are carried outwardly by a screw auger driven by the dryer.
|