Air classifier for shredded refuse

Abstract

Abstract An air classifier for shredded refuse in which the shredded material to be sorted on a weight versus surface area basis is placed into an initial input chute which raises the shredded material through an upwardly moving column of air into a compression throat where the majority of rising air is passed through a series of vanes to a return manifold input. The acceptable refuse from compression throat is carried into a first sorting column where a rising air mass of slightly lower velocity than that of conduit air mass performs the first fine sorting, i.e., the heavier material and the material of low surface area drops and is deflected out of the air stream into a suitable container. The remainder of the material then rises with the air stream through a second compression throat and into a second sorting column where a rising air mass of still lower velocity is present. This is repeated until the required number of classifications have taken place and the air is finally filtered and returned to the return manifold where it repeats its passage upward through the sorting columns.

Inventors

• 👤 James M Barrett

Bibliographic Details