JPS649823A - Production of silicic acid - Google Patents

Production of silicic acid

Info

Publication number
JPS649823A
JPS649823A JP16362787A JP16362787A JPS649823A JP S649823 A JPS649823 A JP S649823A JP 16362787 A JP16362787 A JP 16362787A JP 16362787 A JP16362787 A JP 16362787A JP S649823 A JPS649823 A JP S649823A
Authority
JP
Japan
Prior art keywords
raw material
gas
silicic acid
burner
fuel gas
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
JP16362787A
Other languages
Japanese (ja)
Inventor
Atsushi Yamana
Kenji Torii
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.)
JFE Engineering Corp
Original Assignee
NKK Corp
Nippon Kokan 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 NKK Corp, Nippon Kokan Ltd filed Critical NKK Corp
Priority to JP16362787A priority Critical patent/JPS649823A/en
Publication of JPS649823A publication Critical patent/JPS649823A/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B3/00—Charging the melting furnaces
    • C03B3/02—Charging the melting furnaces combined with preheating, premelting or pretreating the glass-making ingredients, pellets or cullet
    • C03B3/026—Charging the melting furnaces combined with preheating, premelting or pretreating the glass-making ingredients, pellets or cullet by charging the ingredients into a flame, through a burner or equivalent heating means used to heat the melting furnace
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B17/00—Forming molten glass by flowing-out, pushing-out, extruding or drawing downwardly or laterally from forming slits or by overflowing over lips
    • C03B17/04—Forming tubes or rods by drawing from stationary or rotating tools or from forming nozzles
    • 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
    • C03B5/12—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture in shaft furnaces

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Glass Melting And Manufacturing (AREA)
  • Silicon Compounds (AREA)

Abstract

PURPOSE:To improve heat efficiency, by preheating a granular raw material with a fuel preheated with a waste gas of combustion gas, in melting the granular raw material with the combustion gas by burner and producing a silicic acid as a silicic acid rod from the melt. CONSTITUTION:A granular raw material 6 such as silica cut off from a raw material hopper 1 is charged into a melting oven from central part of burner 5 in the upper part of the melting oven 15. On the other hand, a fuel gas 16 is burned at outlet of the burner 5 to form flame 7. The raw material 6 attains melt zone 8 of silicic acid in the oven while being heated in state enveloped in flames and completely melted and the melt is pulled as silicic acid rod. Discharge gas 19 generated in the furnace enters into an equipment 22 for preheating fuel gas in inlet side of the burner 5 from an discharge inlet 10 through a flow rate-controlling valve 21 and passes through a preheating tube 24 heat-insulating by insulation 25 with concentric circle of a fuel gas 16-charging tube 23. At this time, the discharge gas 19 preheats the fuel gas 19 and further the raw material 6 is preheated by the fuel gas 16 preheated.
JP16362787A 1987-06-30 1987-06-30 Production of silicic acid Pending JPS649823A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16362787A JPS649823A (en) 1987-06-30 1987-06-30 Production of silicic acid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16362787A JPS649823A (en) 1987-06-30 1987-06-30 Production of silicic acid

Publications (1)

Publication Number Publication Date
JPS649823A true JPS649823A (en) 1989-01-13

Family

ID=15777526

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16362787A Pending JPS649823A (en) 1987-06-30 1987-06-30 Production of silicic acid

Country Status (1)

Country Link
JP (1) JPS649823A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000003955A1 (en) * 1998-07-15 2000-01-27 Saint-Gobain Quartz Plc Process and apparatus for manufacturing a glass ingot from synthetic silica
EP1160209A2 (en) * 2000-05-30 2001-12-05 Tosoh Quartz Corporation Method and apparatus for manufacturing quartz glass ingot
JP2002097031A (en) * 2000-09-21 2002-04-02 Tosoh Quartz Corp Method and unit for producing long quartz glass

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000003955A1 (en) * 1998-07-15 2000-01-27 Saint-Gobain Quartz Plc Process and apparatus for manufacturing a glass ingot from synthetic silica
US6763682B1 (en) 1998-07-15 2004-07-20 Saint-Gobain Quartz Plc Process and apparatus for manufacturing a glass ingot from synthetic silica
KR100637027B1 (en) * 1998-07-15 2006-10-20 세인트-고바인 쿼어츠 피엘씨 Process and apparatus for manufacturing a glass ingot from synthetic silica
EP1160209A2 (en) * 2000-05-30 2001-12-05 Tosoh Quartz Corporation Method and apparatus for manufacturing quartz glass ingot
EP1772437A3 (en) * 2000-05-30 2009-03-04 Tosoh Quartz Corporation Method and apparatus for manufacturing quartz glass ingot
JP2002097031A (en) * 2000-09-21 2002-04-02 Tosoh Quartz Corp Method and unit for producing long quartz glass

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