JPS6469530A - Production of glass - Google Patents
Production of glassInfo
- Publication number
- JPS6469530A JPS6469530A JP62223242A JP22324287A JPS6469530A JP S6469530 A JPS6469530 A JP S6469530A JP 62223242 A JP62223242 A JP 62223242A JP 22324287 A JP22324287 A JP 22324287A JP S6469530 A JPS6469530 A JP S6469530A
- Authority
- JP
- Japan
- Prior art keywords
- glass
- feedstock
- melt
- under
- atmospheric
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
- C03B5/225—Refining
- C03B5/2252—Refining under reduced pressure, e.g. with vacuum refiners
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Glass Melting And Manufacturing (AREA)
Abstract
PURPOSE:To obtain glass by providing such a process as to melt the glass feedstock under a pressure lower than the atmospheric one to enable the foams in the glass with high viscosity event at elevated temperatures to be removed in high efficiency in a short time. CONSTITUTION:When the objective glass is to be produced, such a process as to melt the glass feedstock under a pressure lower than the atmospheric pressure is provided. The overall process is as follows: the feedstock is heated under the atmospheric pressure, and after the whole system is kept in a fluidized state with 90% of said feedstock melted and a clarifier contained in the feedstock is dissolved in the melt, the whole system is preferably melted under a pressure lower than the atmospheric one for >=10min per cm of the depth of the melt. In addition, it is preferable that following the above melting process, the resultant system be further melted under the atmospheric pressure for >=1hr.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62223242A JPS6469530A (en) | 1987-09-07 | 1987-09-07 | Production of glass |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62223242A JPS6469530A (en) | 1987-09-07 | 1987-09-07 | Production of glass |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6469530A true JPS6469530A (en) | 1989-03-15 |
Family
ID=16795027
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62223242A Pending JPS6469530A (en) | 1987-09-07 | 1987-09-07 | Production of glass |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6469530A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001518049A (en) * | 1998-01-26 | 2001-10-09 | サン−ゴバン ビトラージュ | Method for melting and refining vitrizable substances |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6237678A (en) * | 1985-08-09 | 1987-02-18 | 新日本製鐵株式会社 | Decompression scouring device for melt |
JPS62235222A (en) * | 1986-01-02 | 1987-10-15 | ピ−ピ−ジ− インダストリ−ズ,インコ−ポレ−テツド | Method of melting and clarifying glass or analogue by vacuum clarification |
JPS6418926A (en) * | 1987-06-29 | 1989-01-23 | Ppg Industries Inc | Vacuum purification of glass or like by increased foaming |
-
1987
- 1987-09-07 JP JP62223242A patent/JPS6469530A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6237678A (en) * | 1985-08-09 | 1987-02-18 | 新日本製鐵株式会社 | Decompression scouring device for melt |
JPS62235222A (en) * | 1986-01-02 | 1987-10-15 | ピ−ピ−ジ− インダストリ−ズ,インコ−ポレ−テツド | Method of melting and clarifying glass or analogue by vacuum clarification |
JPS6418926A (en) * | 1987-06-29 | 1989-01-23 | Ppg Industries Inc | Vacuum purification of glass or like by increased foaming |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001518049A (en) * | 1998-01-26 | 2001-10-09 | サン−ゴバン ビトラージュ | Method for melting and refining vitrizable substances |
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