MAN-MADE VITREOUS FIBRES

The product of man-made vitreous fibres is made of the oxides mixture, with weight composition: 36 to 55 % of SiO2, 15 to 30 % of Al2O3, 3 to 30 % of CaO, 5 to 20 % MgO, 4 to 15 % of FeO, 1 to 12 % of Na2O + K2O, up to 6 % of TiO2 and up to 15 % of other elements, whilst the ratio of Si4+ to Si4+ +...

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Bibliographische Detailangaben
Hauptverfasser:	RASMUSSEN SVEND G, JENSEN SOREN L, CHRISTENSEN VERMUND R, GULDBERG MARIANNE
Format:	Patent
Sprache:	eng
Schlagworte:	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
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Beschreibung
Zusammenfassung:	The product of man-made vitreous fibres is made of the oxides mixture, with weight composition: 36 to 55 % of SiO2, 15 to 30 % of Al2O3, 3 to 30 % of CaO, 5 to 20 % MgO, 4 to 15 % of FeO, 1 to 12 % of Na2O + K2O, up to 6 % of TiO2 and up to 15 % of other elements, whilst the ratio of Si4+ to Si4+ + Al3+ in the oxides mixture is up to 0.67, a viscosity at the liquidus temperature of above 30 Pa.s and, a liquidus temperature of below 1300 C, a solubility at pH 4.5 of at least 20 nm per day. Disclosed are also two production methods according to this invention.