Mineral wool composition

Details Mineral wool composition Mineral wool composition

C - Chemistry, Metallurgy

03

C

C03C 13/06 (2006.01)

Patent

CA 2553132

The invention relates to a mineral wool which can be dissolved in a physiological medium and which comprises the following constituents according to the following percentages by weight: SiO¿2 ?39-44%, preferably 40-43%, A1¿2?O¿3?16-27%, preferably 16-26%, CaO 6 -20%, preferably 8-18%, MgO 1-5%, preferably 1-4,9%, Na¿2?O 0-15%, preferably 2-12%, K¿2?O 0-15%, preferably 2-12%, R¿2?O (Na¿2?O + K¿2?O) 10-14,7%, preferably 10-13.5% P¿2?O¿5?0-3%, i.e.0-2% Fe¿2?O¿3? (total iron) 1,.5-15%, i.e.3,2-8%, B¿2?O¿3?0-2%, preferably 0-1%, TiO¿2?0-2%, preferably 0.4-1%.

L'invention a pour objet une laine minérale susceptible de se dissoudre dans un milieu physiologique, et qui comprend les constituants ci-après selon les pourcentages pondéraux suivants : SiO2 39-44%, de préférence 40-43%, A12O3 16- 27%, de préférence 16-26%, CaO 6 -20%, de préférence 8-18%, MgO 1-5%, de préférence 1-4,9%, Na2O 0-15%, de préférence 2-12%, K2O 0-15%, de préférence 2- 12%, R2O (Na2O + K2O) 10-14,7%, de préférence 10-13,5% P2O5 0-3%, notamment 0- 2% Fe2O3 (fer total) 1,5-15%, notamment 3,2-8%, B2O30-2%, de préférence 0-1%, TiO2 0-2%, de préférence 0,4-1%.

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