Patent ID: 8187527
Filing Date: 2012-05-29
Classification: C21D,F27B

Abstract:
1. A modular air fluidized sand bed for the heat treatment of metal products, the modular air fluidized sand bed comprising: a plurality of gas-fired burners directed into a plurality of U-tube assemblies in a fluidized-sand heat transfer media heated by a fluidizing agent and exhausted into a plenum of a modular air fluidized sand bed, the modular air fluidized sand bed having a fluidization pressure and a fluidization volume that selectively are altered independent of a fluidization media temperature; an independent control module to alter temperature; an independent control module to alter fluidization pressure; and an independent control module to alter fluidization volume; wherein the modular air fluidized sand bed is comprised of a plurality of modules configured for assembly as the modular fluidized bed.