JPS6469530A - Production of glass - Google Patents

Production of glass

Info

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
Application number
JP62223242A
Other languages
Japanese (ja)
Inventor
Keiji Kitamura
Seiichiro Manabe
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Sheet Glass Co Ltd
Original Assignee
Nippon Sheet Glass Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nippon Sheet Glass Co Ltd filed Critical Nippon Sheet Glass Co Ltd
Priority to JP62223242A priority Critical patent/JPS6469530A/en
Publication of JPS6469530A publication Critical patent/JPS6469530A/en
Pending legal-status Critical Current

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.
JP62223242A 1987-09-07 1987-09-07 Production of glass Pending JPS6469530A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (3)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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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