| Original document(17 pages) Authorized document(17 pages) 中文版 |
The invention relates to a method for the production of opaque quartz glass wherein a blank is made from synthetic SiO2 crystals and heated to form a blank body made of opaque quartz glass at a given vitrification temperature. A method for the production of pure, opaque quartz glass is disclosed wherein said quartz glass has a homogeneous pore distribution and a high density, a high viscosity and a lower tendency to devitrify. According to the invention, the SiO2 crystals are formed from an at least partially porous agglomerate of SiO2 primary particles (21; 31) having a specific surface (according to BET) between 1.5 m<2>/g and 40 m<2>/g with a stamping density of at least 0.8 g/cm<3>. SiO2 granulate (21; 31) suitable for use in performing the procedure is characterized in that it is composed of an at least partially porous agglomerate of SiO2 primary particles and has a specific surface (according to BET) between 1.5 m<2>/g and 40 m<2>/g in addition to a stamping density of at least 0.6 g/cm<3>. |
Application Number
申请号 |
00817710 |
Application Date
申请日 |
2000.12.14 |
| Title 名称 |
Method for production of opaque quartz glass, SiO2 granulate suitable for use in performing the method and component made of opaque quartz glass |
Publication Number
公开号 |
1413175 |
Publication Date
公开日 |
2003.04.23 |
| Approval Pub. Date |
2005.05.11 |
Granted Pub. Date |
2005.05.11 |
| International Classification 分类号 |
C03C3/06;C03C1/02;C03B19/10 |
Applicant(s) Name
申请人 |
Heraeus Quarzglas GmbH & Co., KG |
| Address 地址 |
|
| Inventor(s) Name 发明人 |
W. Werdecker;H. Fabian;U. Gertig |
| Attorney & Agent 代理人 |
hu qiang zhao xin |
| More information 更 多 信 息 |
|
| Related patents information |
|
|
|
|
|
|