Method for separating hazardous substances in waste foundry sand

Details Method for separating hazardous substances in waste foundry sand Method for separating hazardous substances in waste foundry sand

1990-03-28

1990-12-18

Eley, Timothy V.

Solid material comminution or disintegration

Processes

By utilizing kinetic energy of projected or suspended material

241 23, 241 24, 241DIG10, B02C 2100

Patent

active

049780760

ABSTRACT:
Hazardous substances are separated from used foundry sand by means of a triple fluid bed thermal reactor, second stage sand cooler and third stage pneumatic attrition scrubber. Temperatures in each of the reactor's beds are precisely controlled, depending upon the nature of the sand being treated, so that hazardous substances can be separated and disposed of, rather than fixing the substances onto the sand grains in insoluble form.

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