发明名称 |
METHOD FOR PRODUCING GLASSES, GLASS CERAMICS AND THE USE OF SAME |
摘要 |
A method for producing bubble-free glasses is provided, 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 sulfate compound as a refining agent are used. The glass mixture and refining agent are melted and primarily refined in a first region of a melting tank, an average melting temperature (T1) is set at T1>1580° C. and an average melt residence time (t1) is set at t1>2 hours. A secondary refinement is carried out in a second region, an average melting temperature (T2) is set at T2>1660° C. and an average melt residence time (t2) is set at t2>1 hour, and the proportion of the SO3 resulting from decomposition of the sulfate is reduced to less than 0.002 wt. %. |
申请公布号 |
EP2817266(A1) |
申请公布日期 |
2014.12.31 |
申请号 |
EP20130704942 |
申请日期 |
2013.02.18 |
申请人 |
SCHOTT AG |
发明人 |
LENTES, FRANK-THOMAS;NAUMANN, KARIN;SCHIFFNER, ULRICH;SIEBERS, FRIEDRICH;MÜLLER, CHRISTIAN;SCHÖNBERGER, KLAUS;WEISS, EVELIN |
分类号 |
C03B5/225;C03C1/00;C03C10/12 |
主分类号 |
C03B5/225 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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