Process and device for stabilising, cooling and dehumidifying gypsum plaster
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United States of America Patent
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Aug 5, 2014
Grant Date -
Mar 15, 2012
app pub date -
Aug 10, 2011
filing date -
Aug 11, 2010
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Abstract
In a process for the continuous conditioning of gypsum plaster, the gypsum plaster is passed from a calcination facility connected upstream to a gypsum plaster cooler in the form of particles. In the gypsum plaster cooler, soluble calcium sulphate anhydrite is initially converted to calcium sulphate hemi-hydrate and calcium sulphate dihydrate to calcium sulphate hemi-hydrate, and crystal defects are eliminated. Subsequently, the gypsum plaster is brought into contact with ambient air and dehumidified by the latter and thereby simultaneously cooled indirectly.
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