Method and apparatus for reclaiming sand

Details Method and apparatus for reclaiming sand Method and apparatus for reclaiming sand

1976-08-19

1977-09-27

Custer, Jr., Granville Y.

Solid material comminution or disintegration

Processes

With classifying or separating of material

241 30, 241 69, 241 72, 241DIG10, B02C 2316

Patent

active

040506355

ABSTRACT:
Method and apparatus for reclaiming sand from foundry molds and forms. A drum is mounted in a frame for rotation about its longitudinal axis. The frame is hinged at its rearward end so that the longitudinal axis of the drum may be adjustably inclinedfrom the horizontal. The drum is provided with first and second breaking zones for reducing large pieces of material in the drum as the drum rotates. The first breaking zone contains longitudinal rib members and spikes attached thereto while the second breaking zone contains longitudinal rib members only. A perforate partition separates the first and second breaking zones and prevents the movement of material from the first breaking zone to the second breaking zone until it has been sufficiently reduced. There is also provided a grinding zone for further reducing particles having a predetermined maximum size by means of grinding balls. Various sizing screens are provided for classifying the material being reclaimed into a finished product having a predetermined maximum size and oversized particles.

REFERENCES:
patent: 788675 (1905-05-01), Rissmuller
patent: 1120343 (1914-12-01), Spaulding
patent: 1524871 (1925-02-01), Lindhard

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