Fluid bed dryers.Ventilex has announced advancements made in the company's fluid bed dryers for aggregates such as sand, slag or gravel gravel, particles of rock, i.e., stones and pebbles, usually round in form and intermediate in size between sand grains and boulders. Gravel is composed of various kinds of rock, the most common constituent being the mineral quartz. . The fluid bed dryers feature a shaking movement that moves the product forward, improving fluidization Fluidization The processing technique employing a suspension or fluidization of small solid particles in a vertically rising stream of fluid—usually gas—so that fluid and solid come into intimate contact. and reducing the air load. The maximum drying air temperature also has increased from 840-1,112F (450-600C) for more evaporation evaporation, change of a liquid into vapor at any temperature below its boiling point. For example, water, when placed in a shallow open container exposed to air, gradually disappears, evaporating at a rate that depends on the amount of surface exposed, the humidity per square foot and less electrical energy usage per ton of dried product. Two heat exchangers heat exchanger Any of several devices that transfer heat from a hot to a cold fluid. In many engineering applications, one fluid needs to be heated and another cooled, a requirement economically accomplished by a heat exchanger. are supplied in the installation of its fluid bed dryers for efficient evaporation cooling.--Ventilex Select No. 005 at www.moderncasting.com/info |
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