发明公开
- 专利标题： VERFAHREN ZUR HERSTELLUNG VON GLÄSERN, GLASKERAMIKEN UND DEREN VERWENDUNG
- 专利标题（英）： Method for producing glasses, glass ceramics and the use of same
- 专利标题（中）： 用于生产玻璃，玻璃陶瓷及其用途
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申请号： EP13704942.5申请日： 2013-02-18
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公开(公告)号： EP2817266A1公开(公告)日： 2014-12-31
- 发明人: LENTES, Frank-Thomas , NAUMANN, Karin , SCHIFFNER, Ulrich , SIEBERS, Friedrich , MÜLLER, Christian , SCHÖNBERGER, Klaus , WEISS, Evelin
- 申请人： Schott AG
- 申请人地址： Hattenbergstrasse 10 55122 Mainz DE
- 专利权人： Schott AG
- 当前专利权人： Schott AG
- 当前专利权人地址： Hattenbergstrasse 10 55122 Mainz DE
- 代理机构： Mehler Achler
- 优先权： DE102012202696 20120222
- 国际公布： WO2013124231 20130829
- 主分类号： C03B5/225
- IPC分类号： C03B5/225 ; C03C10/12 ; C03C1/00
摘要：
The invention relates to a method for producing bubble-free glasses, in which a glass mixture that is arsenic-free, antimony-free and tin-free with the exception of any unavoidable raw material impurities and at least one sulphate compound as refining agent are used. The glass mixture comprising refining agent is melted in a melting tank (1), melting down taking place and a primary refinement being carried out in a first region (10) of the melting tank (1), an average melting temperature (T
1 ) being set at T
1 > 1580 °C and an average melt residence time (t
1 ) being set at t
1 > 2 hours in the first region (10). A secondary refinement is carried out in a second region (20) of the melting tank (1), an average melting temperature (T
2 ) being set at T
2 > 1660 °C and an average melt residence time (t
2 ) being set at t
2 > 1 hour in the second region (20), and the proportion of the (SO
3 ) resulting from the decomposition of the sulphate compound being reduced to less than 0.002 wt.%, at the latest as the secondary refinement is being carried out. A high-temperature refinement is carried out after the secondary refinement.
1 ) being set at T
1 > 1580 °C and an average melt residence time (t
1 ) being set at t
1 > 2 hours in the first region (10). A secondary refinement is carried out in a second region (20) of the melting tank (1), an average melting temperature (T
2 ) being set at T
2 > 1660 °C and an average melt residence time (t
2 ) being set at t
2 > 1 hour in the second region (20), and the proportion of the (SO
3 ) resulting from the decomposition of the sulphate compound being reduced to less than 0.002 wt.%, at the latest as the secondary refinement is being carried out. A high-temperature refinement is carried out after the secondary refinement.
公开/授权文献
- EP2817266B1 VERFAHREN ZUR HERSTELLUNG VON GLÄSERN 公开/授权日：2017-10-25
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