Methods of and systems for adding a high viscosity gypsum additive to a post-mixer aqueous dispersion of calcined gypsum
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United States of America Patent
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May 21, 2013
Grant Date -
Dec 22, 2011
app pub date -
Aug 11, 2011
filing date -
Apr 27, 2005
priority date (Note) -
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Abstract
Provided are methods and systems for introducing a wet gypsum accelerator or other high viscosity production additive to an aqueous dispersion of calcined gypsum in a discharge apparatus downstream of a stucco mixer in which the dispersion was prepared. These methods and systems are useful in the production of various gypsum products such as board including wallboard and ceiling tiles.
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