RECLAMATION OF ESTER-CURED PHENOLIC RESIN BONDED FOUNDRY SANDS
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Apr 13, 2015
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May 11, 2004
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Abstract
A method of preparing a particulate refractory composition for use in the manufacture of foundry molds and cores from spent foundry molds or cores formed of refractory material and an ester-cured phenolic resin binder, the method comprising the steps of breaking up the spent foundry molds or cores, mixing the resulting broken material with a particulate pozzolan additive and subjecting the mixture to a heat treatment at a temperature in the range 450 to 900°.
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