公开(公告)号：US20160221862A1

公开(公告)日：2016-08-04

申请号：US15022972

申请日：2014-10-16

Applicant: ROCKWOOL INTERNATIONAL A/S

Inventor： Lars Erik Hansen ,  Metle Solvang ,  Susanne Dehn

IPC: C03B37/05 ,  C09K21/02 ,  D21H13/40 ,  C03C13/00

CPC classification number: C03B37/055 ,  C03C3/062 ,  C03C3/085 ,  C03C13/00 ,  C03C13/06 ,  C09K21/02 ,  D21H13/40 ,  Y02P40/57

Abstract: The invention provides a method of manufacture of man-made vitreous fibres (MMVF) comprising: providing a fiberising apparatus, wherein the fiberising apparatus comprises: a set of at least three rotors each mounted for rotation about a different substantially horizontal axis; wherein each rotor has a driving means; rotating the rotors; wherein the first rotor rotates to give an acceleration field of from 25 to 60 km/s2 and the second and third rotors each rotate to give an acceleration field of at least 125 km/s2, providing a mineral melt, wherein the melt has a composition comprising the following, expressed by wt of oxides: SiO2 in an amount of from 33 to 45 wt %, Al2O3 in an amount of from 16 to 24 wt %, an amount of K2O and/or Na2O, an amount of CaO and/or MgO, wherein the ratio of the amount of Al2O3 to the amount of SiO2 is in the range 0.34-0.73, wherein the ratio of the total amount of K2O and Na2O, to the total amount of CaO and MgO, is less than 1; pouring the melt on to the periphery of the first rotor; wherein melt poured on to the periphery of the first rotor in the set is thrown on to the periphery of the subsequent rotors in turn and fibres are thrown off the rotors; and collecting the fibres that are formed. Man-made vitreous fibres (MMVF) can thus be formed having a median length of 100 to 300 μm, a median diameter of not more than 2.5 μm, and wherein the ratio of the median fibre length to median fibre diameter is 25 to 500.

Abstract translation: 本发明提供一种制造人造玻璃纤维（MMVF）的方法，包括：提供纤维化装置，其中所述纤维化装置包括：一组至少三个转子，每个转子被安装为围绕不同的基本上水平的轴线旋转; 其中每个转子具有驱动装置; 旋转转子; 其中所述第一转子旋转以产生25至60km / s 2的加速度场，并且所述第二和第三转子各自旋转以产生至少125km / s2的加速度场，提供矿物熔体，其中所述熔体具有组成 包括以下氧化物：SiO 3，其量为33至45重量％，Al 2 O 3的量为16至24重量％，K 2 O和/或Na 2 O的量，CaO和/或 MgO，其中Al 2 O 3与SiO 2的量的比例在0.34-0.73的范围内，其中K 2 O和Na 2 O的总量与CaO和MgO的总量的比率小于1; 将熔体浇注到第一转子的周边; 其中浇注在组件中的第一转子的周边上的熔体依次被投掷到随后的转子的周边，并且纤维被从转子上抛出; 并收集形成的纤维。 因此可以形成中值长度为100〜300μm，中值粒径为2.5μm以下的纤维长径比为25〜500的人造玻璃纤维（MMVF）。