Furnace for sintering silica soot bodies
    6.
    发明公开
    Furnace for sintering silica soot bodies 审中-公开
    用于烧结硅石烟灰体的炉

    公开(公告)号:EP2876091A1

    公开(公告)日:2015-05-27

    申请号:EP14193431.5

    申请日:2014-11-17

    摘要: Apparatus for sintering a hollow cylindrical body (1) of porous synthetic silica comprises a hollow mandrel (2) for supporting the body in a horizontal position. The mandrel is housed within a vacuum furnace (5) having heating elements (4) arranged to surround the body circumferentially along its entire length. A method of sintering a hollow cylindrical body (1) of porous synthetic silica is also disclosed.

    摘要翻译: 用于烧结多孔合成二氧化硅的中空圆柱体(1)的设备包括用于在水平位置支撑主体的中空心轴(2)。 心轴容纳在具有加热元件(4)的真空炉(5)内,所述加热元件(4)沿着其整个长度周向地围绕主体布置。 还公开了一种烧结多孔合成二氧化硅的中空圆柱体(1)的方法。

    VERFAHREN UND HALBZEUG ZUR HERSTELLUNG VON OPAKEM QUARZGLAS, SOWIE AUS DEM HALBZEUG HERGESTELLTES BAUTEIL
    8.
    发明授权
    VERFAHREN UND HALBZEUG ZUR HERSTELLUNG VON OPAKEM QUARZGLAS, SOWIE AUS DEM HALBZEUG HERGESTELLTES BAUTEIL 有权
    方法和半成品FOR PRODUCING不透明石英玻璃,并从半成品分量产生

    公开(公告)号:EP2091874B1

    公开(公告)日:2012-06-27

    申请号:EP07822093.6

    申请日:2007-10-31

    IPC分类号: C03B19/06 C03C14/00

    摘要: Methods for the production of opaque quartz glass are known, according to which a suspension containing amorphous SiO2 particles is produced, a porous green body is formed therefrom, the green body is dried and then condensed by sintering during the formation of opaque quartz glass. In order to expand on this method and allow a reproducible production of opaque quartz glass which is minimally susceptible to cracks, using the slurry method, and to produce a green body (semifinished product) which is distinguished by a minimal susceptibility to cracks, it is suggested according to the invention to form a green body from a SiO2 matrix and quartz glass filaments embedded therein. The green body obtained from the method is characterized in that quartz glass filaments are embedded in a matrix produced by casting and drying a suspension containing amorphous SiO2 particles.

    VERFAHREN UND HALBZEUG ZUR HERSTELLUNG VON OPAKEM QUARZGLAS, SOWIE AUS DEM HALBZEUG HERGESTELLTES BAUTEIL
    9.
    发明公开
    VERFAHREN UND HALBZEUG ZUR HERSTELLUNG VON OPAKEM QUARZGLAS, SOWIE AUS DEM HALBZEUG HERGESTELLTES BAUTEIL 有权
    方法和半成品FOR PRODUCING不透明石英玻璃,并从半成品分量产生

    公开(公告)号:EP2091874A1

    公开(公告)日:2009-08-26

    申请号:EP07822093.6

    申请日:2007-10-31

    IPC分类号: C03B19/06 C03C14/00

    摘要: Methods for the production of opaque quartz glass are known, according to which a suspension containing amorphous SiO2 particles is produced, a porous green body is formed therefrom, the green body is dried and then condensed by sintering during the formation of opaque quartz glass. In order to expand on this method and allow a reproducible production of opaque quartz glass which is minimally susceptible to cracks, using the slurry method, and to produce a green body (semifinished product) which is distinguished by a minimal susceptibility to cracks, it is suggested according to the invention to form a green body from a SiO2 matrix and quartz glass filaments embedded therein. The green body obtained from the method is characterized in that quartz glass filaments are embedded in a matrix produced by casting and drying a suspension containing amorphous SiO2 particles.

    SiO2-SCHLICKER FÜR DIE HERSTELLUNG VON QUARZGLAS SOWIE VERWENDUNG DES SCHLICKERS
    10.
    发明公开
    SiO2-SCHLICKER FÜR DIE HERSTELLUNG VON QUARZGLAS SOWIE VERWENDUNG DES SCHLICKERS 有权
    二氧化硅SCHLICKER滑差的石英玻璃的生产和使用

    公开(公告)号:EP2069244A1

    公开(公告)日:2009-06-17

    申请号:EP07820139.9

    申请日:2007-09-12

    摘要: A known SiO2 slurry for the production of quartz glass contains a dispersion liquid and amorphous SiO2 particles with particle sizes to a maximum of 500µm, wherein the largest volume fraction is composed of SiO2 particles with particle sizes in the range 1µm - 60µm, as well as SiO2 nanoparticles with particle sizes less than 100nm in the range 0.2 - 15% volume by weight (of the entire solids content). In order to prepare such a slurry for use, and to optimize the flow behavior of such a slurry with regard to later processing by dressing or pouring the slurry mass, and with regard to later drying and sintering without cracks, the invention suggests a slurry with SiO2 particles with a multimodal distribution of particle sizes, with a first maximum of the sizes distribution in the range 1µm - 3µm and a second maximum in the range 5µm - 50µm, and a solids content (percentage by weight of the SiO2 particles and the SiO2 nanoparticles together) in the range 83% - 90%.