Method for the continuous production of granulates from a solid in a fluidized bed of material
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United States of America Patent
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Feb 14, 1989
Grant Date -
N/A
app pub date -
Dec 1, 1986
filing date -
May 30, 1985
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention concerns a method for the continuous production of a solid granulate by drying and simultaneous granulation in a flow bed. In this connection, the solid to be granulated, in the form of a solution or suspension, is sprayed into or onto the bed of material consisting of pregranulated solid and fluidized by an injected drying gas of suitable temperature, a corresponding quantity of granulate is discharged from the bed of material and separately therefrom the drying gas is drawn off together with the water vapor produced. In order to obtain a mode of operation independent of the flow velocity of the drying gas, the granules of the fluidized bed of material are continuously subjected to a centrifugal force classification, the mixture of drying gas and water vapor serving as carrier gas for classification.
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