Gypsum set accelerator and method of making the same

Details Gypsum set accelerator and method of making the same Gypsum set accelerator and method of making the same

C - Chemistry, Metallurgy

04

B

C04B 22/14 (2006.01) B02C 17/14 (2006.01) C04B 24/38 (2006.01) C04B 28/14 (2006.01) C04B 40/00 (2006.01)

Patent

CA 2381670

A composition for accelerating the setting reaction of an aqueous calcined gypsum slurry, and a method of making the same are disclosed. The composition includes a vibratory ball milled mixture of calcium sulfate dihydrate and a surfactant. The composition is prepared by subjecting the mixture to the high- frequency, low-impact grinding action of a vibratory ball mill. The resultant composition has a potency superior to that of conventional gypsum set accelerators.

L'invention concerne une composition destinée à accélérer la réaction de durcissement d'une suspension aqueuse de gypse calciné, et un procédé de production de celle-ci. La composition contient un mélange broyé aux boulets vibrants de sulfate de calcium déshydraté et d'un tensioactif. La composition est préparée par soumission du mélange à une action de broyage à haute fréquence et faible impact d'un broyeur à boulets vibrants. La composition obtenue présente une puissance supérieure à celle des accélérateurs de durcissement du gypse classiques.

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