Classifying – separating – and assorting solids – Sifting – With liquid treatment
Patent
1994-09-14
1996-06-11
Bollinger, David H.
Classifying, separating, and assorting solids
Sifting
With liquid treatment
209284, 209288, 209293, 209689, B07B 122
Patent
active
055247695
ABSTRACT:
A counterflow aggregate recovery apparatus for separating and retrieving material. The recovery apparatus includes a rotatable drum in which a cylindrical screen is suspended. The material to be processed is introduced into the cylindrical screen. The screen permits the passage of material smaller than the openings defined by the screen. The material which passes through the cylindrical screen is received within an annular volume defined between the cylindrical screen and the drum wall. A first material conveyor moves the material received within the annular volume such that the material is discharged from the second end of the drum. A second material conveyor moves the material retained by the cylindrical screen to the first end of the drum and discharges the material from the first end.
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