B - Operations – Transporting – 22 – C
Patent
B - Operations, Transporting
22
C
22/89
B22C 5/00 (2006.01) B22C 5/08 (2006.01) B22C 5/18 (2006.01)
Patent
CA 1193067
Abstract: A method and apparatus for treating granular materials which require to be heated to drive off volatile constituents and which require to be cooled, for example foundry sand containing an organic binder. The method comprises the step of maintaining a mass of the material at a treatment temperature lying in the range 250°C-400°C for between four and thirty hours. The mass may be initially heated by virtue of a manufacturing process in which the mass has been previously used. Alternatively, the mass may be initially heated by a pre-heating step such as heating in a fluidised bed. Alternatively, the mass may be heated by being placed in heat transfer relationship with a second mass of the material which has been previously heated, for example, in a fluidised bed. Apparatus for performing the method is also disclosed.
448588
Cosworth Research And Development Limited
Kirby Eades Gale Baker
LandOfFree
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