Method of reclaiming foundry sand

Details Method of reclaiming foundry sand Method of reclaiming foundry sand

1989-02-17

1990-10-02

Seidel, Richard K.

Metal founding

Process

Including recycling of process material

210770, 241DIG10, B02C 1912, B02C 2320

Patent

active

049601628

ABSTRACT:
Foundry sand lumps containing a water soluble binder are broken down to grain size, mechanically scrubbed to remove slime-forming impurities, dust and some of the binder, washed to remove substantially all the remaining binder and provide a sand/water slurry, pressure filtered and dried.

REFERENCES:
patent: 2261947 (1941-11-01), Barnebl et al.
patent: 2331102 (1943-10-01), Bird
patent: 2420392 (1947-05-01), Christensen et al.
patent: 2783511 (1957-03-01), Will et al.
patent: 3403784 (1968-10-01), Blumberg
patent: 4008856 (1977-02-01), Sears
patent: 4685973 (1987-08-01), Ashton
Wile, L. E. "Sand Reclamation at Lynchburg Foundry" in Foundry Trade Journal, vol. 94, No. 1903, Feb. 19, 1953, pp. 207-214.

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