C - Chemistry – Metallurgy – 04 – B
Patent
C - Chemistry, Metallurgy
04
B
C04B 11/05 (2006.01) C04B 11/028 (2006.01)
Patent
CA 2372033
A method for synthesizing a natural calcium sulfate based hydraulic bonding agent (gypsum), whereby the calcium sulfate is heated to obtain a high proportion of anhydrite III or alpha and thermal dipping occurs. Said method consists in the following : the calcium sulfate is completely dehydrated and the matter thus dehydrated is cooled in a brutal manner. Preferably, the present invention can be used in the construction industry in order to obtain a hydraulic bonding agent that can be used as cement.
Procédé de synthèse d'un liant hydraulique à base de sulfate de calcium naturel (gypse) consistant à chauffer le sulfate de calcium pour obtenir dans une grande proportion d'anhydrite III ou .alpha. puis à effectuer une trempe thermique. Il consiste à: déshydrater complètement le sulfate de calcium, et refroidir brutalement la matière ainsi déshydratée. La présente invention trouve une application préférentielle dans l'industrie du bâtiment dans l'obtention d'un liant hydraulique faisant office de ciment.
Goudreau Gage Dubuc
Societe Europeenne D'exploitation de Technologies Industrielles
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