发明名称 |
Pretreatment of fused cast refractories |
摘要 |
The potential for fused cast ceramic refractories to release stones into molten material with which it is in contact is reduced by subjecting the refractory to a vacuum pretreatment to remove gases from the glassy phase of the refractory. Preferably the treatment is carried out when the refractory is in a molten state.
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申请公布号 |
US4838919(A) |
申请公布日期 |
1989.06.13 |
申请号 |
US19870138748 |
申请日期 |
1987.12.28 |
申请人 |
PPG INDUSTRIES, INC. |
发明人 |
KUNKLE, GERALD E.;PECORARO, GEORGE A. |
分类号 |
C04B35/657;C04B35/484 |
主分类号 |
C04B35/657 |
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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