Pumped flow attrition disk zone

Details Pumped flow attrition disk zone Pumped flow attrition disk zone

1984-10-10

1987-07-07

Rosenbaum, Mark

Solid material comminution or disintegration

Apparatus

Including means applying fluid to material

241 4606, 2412613, B02C 712

Patent

active

046781277

ABSTRACT:
A disk attrition device 10 or 50 for pulping or refining slurried material has a centrifugal rotor pump that reverses the flow of material through the attrition zone 13 between rotor and stator working bars. Rotor 12 has centrifugal pump vanes 20 axially near attrition zone 13 and disposed around a peripheral pumping region 17, and rotor 12 has a hollow interior 30 extending from the inner periphery of the attrition zone to the pumping region. Pump vanes 20 provide sufficient centrifugal pumping force so that slurried material enters the outer periphery of the attrition zone, passes radially inward through the attrition zone against the outward pumping force of the working bars, and flows through the hollow rotor interior to the pumping region, where it is pumped radially outward.

REFERENCES:
patent: 254813 (1882-03-01), Gathmann
patent: 254814 (1882-03-01), Gathmann
patent: 1814587 (1931-07-01), Daniels
patent: 3415456 (1968-12-01), Bidwell
patent: 3506202 (1970-04-01), Cumpston, Jr.
patent: 3523649 (1970-08-01), Laakso
patent: 3771732 (1973-11-01), Cumpston, Jr.
patent: 4027824 (1977-06-01), Fuller
patent: 4057194 (1977-11-01), Orton
patent: 4166584 (1979-09-01), Asplund
patent: 4440352 (1984-04-01), Rossler

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