Solid material comminution or disintegration – Processes – By utilizing kinetic energy of projected or suspended material
Patent
1975-04-03
1976-09-07
Custer, Jr., Granville Y.
Solid material comminution or disintegration
Processes
By utilizing kinetic energy of projected or suspended material
241 14, 241 40, 241 91, 241DIG10, B02C 1906
Patent
active
039790738
ABSTRACT:
A method and apparatus for scrubbing particles of sand used in foundry molding is disclosed. The device utilizes a rotating impellor surrounded by a stationary control cage having at least one upwardly positioned opening therein to project sand against a target. The sand rebounds from the target and is continually intercepted and impacted by subsequent grains of sand hurled by the impellor through the control cage opening. The device produces a scrubbing action on the particles by the repeated and continual contact with each to reduce binder buildup from the molding process. A first stage scrubbing of the particles is obtained by causing the particles to be compacted between the rotating impellor and the control cage prior to their being thrown against the target. The sand particles may be recycled through the device any number of times in order to increase the scrubbing effect and further reduce binder buildup.
REFERENCES:
patent: 2103374 (1937-12-01), Nikan
patent: 2211570 (1940-08-01), Kennedy et al.
patent: 2246902 (1941-06-01), Smith
patent: 3694963 (1972-10-01), Leliart
patent: 3768209 (1973-10-01), Punter et al.
patent: 3782643 (1974-01-01), Carpenter
Custer, Jr. Granville Y.
Wheelabrator-Frye Inc.
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