Sand reclamation and purification

Details Sand reclamation and purification Sand reclamation and purification

B - Operations, Transporting

28

B

22/190, 6/45, 20

B28B 7/00 (2006.01) B22C 1/00 (2006.01) B22C 5/18 (2006.01)

Patent

CA 1050209

ABSTRACT OF THE DISCLOSURE A method is disclosed for reclaiming clean sand from a sand mixture impregnated with resin. The method provided for a clean sand product having an acid demand of 15 or less without producing a sludge or waste water by-product to be discarded or treated. Additionally, a method of preparing sand molds or cores from such reclaimed sand at relatively fast cure rates is disclosed; the molds or cores are characterized by high tensile strengths.

236034

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