Method and apparatus for reclaiming foundry sand

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

1983-11-25

1985-01-01

Rosenbaum, Mark

Solid material comminution or disintegration

Processes

By utilizing kinetic energy of projected or suspended material

241 14, 241 23, 241 24, 241DIG10, B02C 1912

Patent

active

044912773

ABSTRACT:
A method and apparatus for reclaiming foundry sand from contaminated foundry sand wherein ferromagnetic contaminants are first removed in a magnetic separating zone, and the remaining contaminated sand is thermally treated at a temperature sufficiently high to cause embrittlement of clay constituents among the remaining contaminants, and finally the thermally treated material is comminuted, preferably in a counterflow impact jet mill to recover a reclaimed foundry sand substantially free from contaminants.

REFERENCES:
patent: 2515194 (1950-07-01), Christensen
patent: 2991187 (1961-07-01), Sellers et al.
patent: 3979073 (1976-09-01), Leliaert
patent: 4354641 (1982-10-01), Smith

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