Method of reclaiming foundry sand

Details Method of reclaiming foundry sand Method of reclaiming foundry sand

1984-11-26

1985-10-29

Godici, Nicholas P.

Solid material comminution or disintegration

Processes

With application of fluid or lubricant material

164 5, 241 23, B02C 1912, B02C 2338

Patent

active

045496986

ABSTRACT:
A method and apparatus for reclaiming used foundry sands including organic resin-bonded sands and clay-bonded sands is shown. The method includes passing used sand downward through a series of vertical, fluid sand beds. Hot air is forced upward in countercurrent fashion through the beds in turn so that a boiling action is achieved in the sand masses. The combination of thermal and abrasive action removes both organic resin and clay-bonded materials from the sand in one continuous operation.

REFERENCES:
patent: 2433738 (1947-12-01), Christensen
patent: 2456769 (1948-12-01), Christensen et al.
patent: 2478461 (1949-08-01), Connolly
patent: 4144088 (1979-03-01), Adams

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