| 摘要 |
A pneumatic classifier and process in which a stream of fluid and the material to be classified are introduced in a swirling stream into a classification chamber, the coarser material migrates by centrifugal force to the outer portion of the stream, the inner and outer portions of the stream are divided, the outer portion of the stream containing the coarser particles is discharged from the classification chamber through a substantially tangential discharge passage, the inner portion of the stream is swirled in a closed path within the classification chamber, the finer particles are discharged from the classification chamber through a discharge passage which communicates with the region within the swirling stream and the recycled coarser particles rejoin the incoming swirling stream where they migrate outwardly by centrifugal force toward the outer stream. |
