MELT COMPOSITION FOR THE PRODUCTION OF MAN-MADE VITREOUS FIBRES

• Main Authors: SOLVANG, METTE, ROSENDAHL FOLDSCHACK, MATHILDE, GROVE-RASMUSSEN, SVEND
• Format: Patent
• Language: English; French; German
• Published: 30.03.2016
• Subjects: CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS; CHEMISTRY; GLASS; JOINING GLASS TO GLASS OR OTHER MATERIALS; MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES; METALLURGY; MINERAL OR SLAG WOOL; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS; SURFACE TREATMENT OF GLASS

The invention relates to a melt composition for the production of man-made vitreous fibers and man-made vitreous fibers comprising the following oxides, by weight of composition: SiO2 39-43 weight % Al2O3 20-23 weight % TiO2 up to 1.5 weight % Fe2O3 5-9 weight %, preferably 5-8 weight % CaO 8-18 weight % MgO 5-7 weight % Na2O up to 10 weight %, preferably 2-7 weight % K2O up to 10 weight %, preferably 3-7 weight % P2O5 up to 2% MnO up to 2% R2O up to 10 weight % wherein the proportion of Fe(2+) is greater than 80% based on total Fe and is preferably at least 90%, more preferably at least 95% and most preferably at least 97% based on total Fe.