Method and apparatus for reclaiming foundry sand

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

1997-07-31

1999-12-14

Rosenbaum, Mark

Solid material comminution or disintegration

Apparatus

Including means applying fluid to material

164 5, 241 65, 241DIG10, B02C 1912

Patent

active

060006447

ABSTRACT:
Inefficiencies in reclaiming foundry sand from foundry cores made up of sand and an organic resin binder are reduced in a method of reclaiming such sand that includes the steps of reducing a foundry core made up of sand and an organic resin binder to small clumps or individual particles, placing the small clumps or individual particles in a bed and introducing a heated gaseous oxidant into the bed generally from the bottom thereof in sufficient volume to fluidize the bed and at sufficient temperature to oxidize the resin binder on the small clumps or individual particles. Also disclosed is an apparatus for performing the method.

REFERENCES:
patent: 3989227 (1976-11-01), Musschoot
patent: 4978076 (1990-12-01), Andrews et al.
patent: 5044567 (1991-09-01), Hte et al.
patent: 5217170 (1993-06-01), Reier
patent: 5251684 (1993-10-01), Andrews et al.
patent: 5289920 (1994-03-01), Godderidge et al.

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