Apparatus for pneumatically separating fractions of a particulat

Details Apparatus for pneumatically separating fractions of a particulat Apparatus for pneumatically separating fractions of a particulat

1978-11-22

1980-10-28

Hill, Ralph J.

Classifying, separating, and assorting solids

Fluid suspension

Gaseous

209149, B07B 402

Patent

active

042305594

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 lighter 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.

REFERENCES:
patent: 1854209 (1932-04-01), McLean
patent: 2000181 (1935-05-01), Lessing et al.
patent: 2257552 (1941-09-01), Hammack
patent: 3397782 (1968-08-01), Kwong et al.
patent: 3441131 (1969-04-01), Gebauer
patent: 3655043 (1972-04-01), Wochnowski et al.

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