- 专利标题: Method for producing a pore-containing opaque quartz glass
-
申请号: US15602919申请日: 2017-05-23
-
公开(公告)号: US10358373B2公开(公告)日: 2019-07-23
- 发明人: Christian Schenk , Gerrit Scheich , Nadine Tscholitsch
- 申请人: Heraeus Quarzglas GmbH & Co. KG
- 申请人地址: DE Hanau
- 专利权人: HERAEUS QUARZGLAS GMBH & CO. KG
- 当前专利权人: HERAEUS QUARZGLAS GMBH & CO. KG
- 当前专利权人地址: DE Hanau
- 优先权: EP16171047 20160524
- 主分类号: C03B19/06
- IPC分类号: C03B19/06 ; C03B20/00
摘要:
A method for producing a pore-containing opaque quartz glass includes: (a) producing porous SiO2 granulate particles from synthetically produced SiO2, (b) thermally densifying the SiO2 granulate particles to form partly densified SiO2 granulate particles, (c) forming a dispersion from the partly densified SiO2 granulate particles, (d) comminuting the partly densified SiO2 granulate particles to form a slip containing comminuted SiO2 granulate particles, (e) shaping the slip into a shaped body and forming a porous SiO2 green body with a green density rG, and (f) sintering the SiO2 green body into opaque quartz glass. To produce opaque quartz glass that is also suited for the use of spray granulate, during step (b), partly densified SiO2 granulate particles are produced with a specific surface BET-(A) between 0.025 and 2.5 m2/g, and during step (d), comminuted SiO2 granulate particles are produced with a specific surface BET-(B) between 4 and 10 m2/g.
公开/授权文献
信息查询