Composition of calcium carbonate and hydrated tobermorites,...

C - Chemistry – Metallurgy – 09 – D

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C09D 7/02 (2006.01) C09C 1/02 (2006.01) C09C 1/28 (2006.01) C09D 5/02 (2006.01) C09K 3/00 (2006.01) D21H 19/38 (2006.01) D21H 19/40 (2006.01) D21H 21/52 (2006.01)

Patent

CA 1051611

A B R E G E Nouveau composé de carbonate de calcium et de Tobermorites hydratées, constitué de 70 à 15% de ?ermorites, dont 0 à 15% de silice exprimée en SiO2, et 30 à 85% de carbonate de calcium. La fabrication consiste en ce que l'on hydrate totalement entre 5 et 100°C des ciments Portland blancs, de manière telle qu'il se forme des pâtes ayant un extrait sec de 5 à 70%, que l'on carbonate la pâte obtenue par CO2 - jusqu'à chute du pH- et que l'on recueille le composé recherche. Le composé est une charge industrielle notamment pour la papeterie et les peintures.

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