Method for both cooling and pneumatically scrubbing a calcined,

Details Method for both cooling and pneumatically scrubbing a calcined, Method for both cooling and pneumatically scrubbing a calcined,

1992-02-11

1993-06-08

Rosenbaum, Mark

Solid material comminution or disintegration

Processes

By utilizing kinetic energy of projected or suspended material

241 17, 241 23, 241 24, 241DIG10, 164 5, B02C 2300

Patent

active

052171701

ABSTRACT:
A method is shown for removing minute traces of thermally fused foundry bonding clays from foundry sands reclaimed by a thermal sand reclaimer. The sand grains are passed to a dual fluid bed sand cooler-scrubber having sparge tubes for fluidizing air distribution, finned water cooling tubes and baffle plates for directing sand travel across the tube banks. The fluidized bed extends under a series of dry scrubber cells where the sand grains are hurled through blast tubes toward target plates by blast nozzles. Air current created within the interior of the device creates a controlled negative atmosphere which carries off unwanted traces of oxides and clays, as well as unwanted fine sand grains. The sand grains which are suitable for reuse are captured and deflected into a discharge section of the fluid bed where they flow over a weir by gravity and are discharged for re-use.

REFERENCES:
patent: 2813318 (1957-11-01), Horth
patent: 3907213 (1975-09-01), Kauffman
patent: 4177952 (1979-12-01), Rikker
patent: 4478572 (1984-10-01), Selli
patent: 4549698 (1985-10-01), Andrews
patent: 4569696 (1986-02-01), Sandstrom et al.
patent: 4978076 (1990-09-01), Andrews et al.

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