Mineral wool capable of dissolving in a physiological medium, and which comprises fibers whose constituents are mentioned below in the following percentages by weight:SiO235-60%,?preferably39-55%?Al2O312-27%,?″16-25%?CaO0-35%,″3-25%MgO0-30%,″0-15%Na2O0-17%,″6-12%K2O0-17%,″3-12%R2O (Na2O + K2O)10-17%
Mineral wool capable of dissolving in a physiological medium, and which comprises fibers whose constituents are mentioned below in the following percentages by weight:SiO235-60%,?preferably39-55%?Al2O312-27%,?″16-25%?CaO0-35%,″3-25%MgO0-30%,″0-15%Na2O0-17%,″6-12%K2O0-17%,″3-12%R2O (Na2O + K2O)10-17%,?″12-17%?P2O50-5%,?″0-2%?Fe2O30-20%,B2O30-8%,?″0-4%?TiO20-3%,?and also comprises a phosphorus compound, the phosphorus content of which, expressed in P2O5 form, varies from 0.2%, especially from more than 0.5%, to 5%, especially to less than 2%, of the total mass of fibers, which is capable of reacting above 100° C. with the fibers to form a coating on the surface of the fibers.
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1. A thermally stable mineral wool capable of dissolving in a physiological medium, said mineral wool comprising fibers comprising:SiO2 in an amount of from 35 to 60%, Al2O3 in an amount of from 12 to 27%, CaO in an amount of from 0 to 35%, MgO in an amount of from 0 to 30%, Na2O in an amount of fro
1. A thermally stable mineral wool capable of dissolving in a physiological medium, said mineral wool comprising fibers comprising:SiO2 in an amount of from 35 to 60%, Al2O3 in an amount of from 12 to 27%, CaO in an amount of from 0 to 35%, MgO in an amount of from 0 to 30%, Na2O in an amount of from 0 to 17%, K2O in an amount of from 0 to 17%, R2O (Na2O+K2) in an amount of from 10 to 17%, P2O5 in an amount of from 0 to 5%, Fe2O3 in an amount of from 0 to 20%, B2O3 in an amount of from 0 to 8%, and TiO2 in an amount of from 0 to 3%, wherein % is percent by weight, wherein a phosphorus compound is present, said phosphorous compound having a phosphorus content, expressed in P2O5 form, from 0.2% to 5% of the total mass of fibers, wherein said phosphorous compound is capable of reacting above 100° C. with the fibers, to form a coating on the surface of the fibers. 2. The mineral wool as claimed in claim 1, whereinSiO2 is present in an amount of from 39 to 55%, Al2O3 is present in an amount of from 16 to 27%, CaO is present in an amount of from 3 to 35%, MgO is present in an amount of from 0 to 15%, Na2O is present in an amount of from 0 to 15%, K2O is present in an amount of from 0 to 15%, R2O (Na2O+K2O) is present in an amount of from 10 to 17%, P2O5 is present in an amount of from 0 to 5%, Fe2O3 is present in an amount of from 0 to 15%, B2O3 is present in an amount of from 0 to 8%, and TiO2 is present in an amount of from 0 to 3%, and further wherein MgO is present in an amount of between 0 and 5% when R2O?13.0%.3. The mineral wool as claimed in claim 1, whereinSiO2 is present in an amount of from 39 to 55%, Al2O3 is present in an amount of from 16 to 25%, CaO is present in an amount of from 3 to 35%, MgO is present in an amount of from 0 to 15%, Na2O is present in an amount of from 0 to 15%, K2O is present in an amount of from 0 to 15%, R2O (Na2O+K2O) is present in an amount of from 13.0 to 17%, P2O5 is present in an amount of from 0 to 5%, Fe2O3 is present in an amount of from 0 to 15%, B2O3 is present in an amount of from 0 to 8%, and TiO2 is present in an amount of from 0 to 3%. 4. The mineral wool as claimed in claim 1, wherein the alkali content R2O (Na2O+K2O) of the fibers is13.0%?R2O?15%. 5. The mineral wool as claimed in claim 1, wherein the Fe2O3 (total iron) content of the fibers is0%?Fe2O3?5%. 6. The mineral wool as claimed in claim 1, wherein the Fe2O3 (total iron) content of the fibers is5%?Fe2O3?15%. 7. The mineral wool as claimed in claim 1, wherein(Na2O+K2O)/Al2O3?0.5. 8. The mineral wool as claimed in claim 1, wherein(Na2O+K2O)/Al2O3?0.6. 9. The mineral wool as claimed in claim 1, wherein CaO and MgO satisfy the following relationship:10%?CaO?25% and 0%?MgO?5%. 10. The mineral wool as claimed in claim 1, wherein:5%?MgO?10% and 5%?CaO?15%. 11. The mineral wool as claimed in claim 1, wherein the fibers have a dissolution rate of at least 30 ng/cm2 per hour measured at a pH of 4.5.12. The mineral wool as claimed in claim 1, wherein the fibers comprise glass and said glass may be fiberized by internal centrifuging.13. The mineral wool as claimed in claim 1, wherein the coating capable of forming on the surface of the fibers consists essentially of an alkaline-earth phosphate.14. The mineral wool as claimed in claim 13, wherein the alkaline-earth phosphate is a calcium phosphate.15. The mineral wool as claimed in claim 1, wherein the phosphorus compound capable of reacting with the fibers is a compound which decomposes above 100° C., releasing phosphoric acid or phosphoric anhydride.16. The mineral wool as claimed in claim 15, wherein the phosphorus compound is chosen from the group consisting of ammonium phosphates, phosphoric acid and ammonium hydrogenophosphates.17. The mineral wool as claimed in claim 1, whereinSiO2 is present in an amount of from 39 to 55%, Al2O3 is present in an amount of from 16 to 25%, CaO is present in an amount of from 3 to 25%, MgO is present in an amount of from 0 to 15%, Na2O is present in an amount of from 6 to 12%, K2O is present in an amount of from 3 to 12%, R2O (Na2O+K2O) is present in an amount of from 12 to 17%, P2O5 is present in an amount of from 0 to 2%, and B2O3 is present in an amount of from 0 to 4%. 18. The mineral wool as claimed in claim 1, wherein the phosphorous content of the phosphorous compound is from 0.5% to less than 2%.19. The mineral wool as claimed in claim 2, whereinSiO2 is present in an amount of from 40 to 52%, Al2O3 is present in an amount of from 16 to 25%, CaO is present in an amount of from 10 to 25%, MgO is present in an amount of from 0 to 10%, Na2O is present in an amount of from 6 to 12%, K2O is present in an amount of from 3 to 12%, R2O (Na2O+K2O) is present in an amount of from 12 to 17%, P2O5 is present in an amount of from 0 to 2%, and B2O3 is present in an amount of from 0 to 4%. 20. The mineral wool as claimed in claim 2, wherein MgO is present in an amount of between 0 and 2% when R2O is?13.0%.21. The mineral wool as claimed in claim 3, whereinSiO2 is present in an amount of from 40 to 52%, Al2O3 is present in an amount of from 17 to 22%, CaO is present in an amount of from 10 to 25%, MgO is present in an amount of from 0 to 10%, Na2O is present in an amount of from 6 to 12%, K2O is present in an amount of from 6 to 12%, P2O5 is present in an amount of from 0 to 2%, and B2O3 is present in an amount of from 0 to 4%. 22. The mineral wool as claimed in claim 4, wherein the alkali content R2O (Na2O+K2O) is 13.3%?R2O?14.5%.23. The mineral wool as claimed in claim 5, wherein the Fe2O3 content is0%?Fe2O3?3%. 24. The mineral wool as claimed in claim 5, wherein the Fe2O3 content is0.5%?Fe2O3?2.5%. 25. The mineral wool as claimed in claim 6, wherein the Fe2O3 content is5%?Fe2O3?8%. 26. The mineral wool as claimed in claim 8, wherein (Na2O+K2O)/Al2O3?0.7.27. The mineral wool as claimed in claim 9, wherein the CaO content is15%?CaO?25%. 28. The mineral wool as claimed in claim 9, wherein the MgO content is0%?MgO?2%. 29. The mineral wool as claimed in claim 9, wherein the MgO content is0%?MgO?1%. 30. The mineral wool as claimed in claim 10, wherein the CaO content is5%?CaO ?10%. 31. A fire resistant structural system comprising the mineral wool as claimed in claim 1.32. The mineral wool as claimed in claim 1, wherein the phosphorus compound is selected from polyphosphates, phosphoric acid in its various forms, or aluminum hydrogen phosphates.33. The mineral wool as claimed in claim 1, wherein the phosphorus compound is mixed with an organic compound.34. A process for manufacturing mineral wool, comprisingforming a plurality of fibers from a molten oxide, wherein the molten oxide comprises SiO2 in an amount of from 35 to 60%, Al2O3 in an amount of from 12 to 27%, CaO in an amount of from 0 to 35%, MgO in an amount of from 0 to 30%, Na2O in an amount of from 0 to 17%, K2O in an amount of from 0 to 17%, R2O (Na2O+K2O) in an amount of from 10 to 17%, P2O5 in an amount of from 0 to 5%, Fe2O3 in an amount of from 0 to 20%, B2O3 in an amount of from 0 to 8%, and TiO2 in an amount of from 0 to 3%, andapplying a phosphorus compound capable of reacting with the fibers to form a coating on the surface of the fibers, and wherein the phosphate compound is added in an amount that results in a phosphorus content, expressed in P2O5 form, from 0.2% to 5% of the total mass of fibers. 35. The process of claim 34, wherein the phosphorous compound is applied by spraying or impregnating with a solution.36. The process of claim 34, whereinSiO2 is present in an amount of from 39 to 55%, Al2O3 is present in an amount of from 16 to 25%, CaO is present in an amount of from 3 to 25%, MgO is present in an amount of from 0 to 15%, Na2O is present in an amount of from 6 to 12%, K2O is present in an amount of from 3 to 12%, R2O (Na2O+K2O) is present in an amount of from 12 to 17%, P2O5 is present in an amount of from 0 to 2%, and B2O3 is present in an amount of from 0 to 4%.
Luan, Wenqi; Brown, Martin; Keller, Tanya; Hill, Mike; Bogen, Scott A.; Figi, Carlos; Frank, William, Large diameter slag wool, composition and method of making same.
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