Fluid Bed Dryers Cum Coolers
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FLUIDIZED-BED SAND COOLER
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Sand coolers are used to cool down clay-bound return sand. The fluidized-bed sand cooler consists of a vibrating conveyor channel with air-permeable bottom, a stationary exhaust hood, a moistening device, a fan and the control unit.The sand is cooled under optimal heat transfer conditions in the fluidized bed by evaporation of water. The final moisture content is adjusted to a constant value by controlled addition of water via temperature and capacity-dependent control. The fluidized bed cooler is distinguished by its high cooling effect with low energy consumption and compact design in every sand preparation plant. For a continuous operation, even with unsteady input quantities, the throughput is adjusted and the cooling parameters are adapted. Due to the vibrating conveying of the sand through the cooler, only a small amount of mechanical parts are in contact with the sand, which minimizes maintenance costs and wearing parts costs.
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