Apparatus and method for pneumatically separating fractions of a

Details Apparatus and method for pneumatically separating fractions of a Apparatus and method for pneumatically separating fractions of a

1978-02-08

1979-08-28

Lutter, Frank W.

Classifying, separating, and assorting solids

Fluid suspension

Gaseous

209141, 209154, B07B 402, B07B 1104

Patent

active

041660277

ABSTRACT:
A pneumatic material separator having adjacent generally vertical sorting ducts and a generally vertical discharge duct communicating with the tops of the sorting ducts is disclosed. Particulate material introduced into a first sorting duct is separated by an upwardly moving column of gas into an upwardly moving lighter fraction and a downwardly moving heavy fraction. The light fraction is carried to a position over a second sorting duct where the gas velocity is reduced. The heaviest particles of the lighter fraction fall into the second sorting duct while the remainder of the lighter fraction is discharged through the discharge duct.

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