发明名称 |
METHOD FOR VACUUM-DEGASSING OF MOLTEN GLASS, DEVICE FOR VACUUM-DEGASSING OF MOLTEN GLASS, METHOD FOR PRODUCING MOLTEN GLASS, DEVICE FOR PRODUCING MOLTEN GLASS, METHOD FOR PRODUCING ARTICLE MADE OF GLASS, AND DEVICE FOR PRODUCING ARTICLE MADE OF GLASS |
摘要 |
To provide a vacuum-degassing method and a vacuum degassing apparatus excellent in the effect of vacuum-degassing molten glass, more specifically, a method for vacuum-degassing molten glass and a vacuum degassing apparatus, capable of effectively suppressing formation of reboil bubbles. A method for vacuum-degassing molten glass, which comprises melting glass materials to be silicate glass and passing the resulting molten glass in a flow passage in a vacuum degassing vessel, the interior of which is maintained in a reduced pressure state, to vacuum-degas the molten glass, wherein vacuum-degassing is carried out under conditions satisfying the following formula (1) at a bottom portion of the vacuum degassing vessel: SS = pSO 2 / P abs < 2.0 wherein SS is the supersaturation degree of SO 2 in the molten glass, pSO 2 is the partial pressure (Pa) of SO 2 , and P abs is the pressure (Pa) at the bottom portion of the glass flow passage of the vacuum degassing vessel. |
申请公布号 |
EP2698354(A4) |
申请公布日期 |
2014.12.17 |
申请号 |
EP20120770966 |
申请日期 |
2012.04.09 |
申请人 |
ASAHI GLASS COMPANY, LIMITED |
发明人 |
MAEHARA, TERUTAKA;KITAMURA, REI;KABASHIMA, SHUJI |
分类号 |
C03B5/225 |
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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