Simultaneous water treatment and grinding of calcined gypsum

B - Operations – Transporting – 32 – B

Patent

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25/104, 241/136,

B32B 13/00 (2006.01) B01F 5/22 (2006.01) B02C 13/18 (2006.01) B28B 3/00 (2006.01) C04B 11/00 (2006.01)

Patent

CA 1150039

Abstract of the Disclosure A process and apparatus for producing a healed stucco having lowered water demand without loss of normal strength development potential which comprises, while blending a small amount of water with the calcined gypsum, simultaneously or substantially simultaneously grinding the calcined gypsum so as to increase the surface area of the calcined gypsum particles while incorporating about 1-10% by weight of the calcined gypsum of free water.

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