JPS643028A - Production of silicic acid - Google Patents

Production of silicic acid

Info

Publication number
JPS643028A
JPS643028A JP62157538A JP15753887A JPS643028A JP S643028 A JPS643028 A JP S643028A JP 62157538 A JP62157538 A JP 62157538A JP 15753887 A JP15753887 A JP 15753887A JP S643028 A JPS643028 A JP S643028A
Authority
JP
Japan
Prior art keywords
feedstock
silicic acid
combustion gas
funnel
hopper
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
JP62157538A
Other languages
Japanese (ja)
Other versions
JPH013028A (en
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 JP62-157538A priority Critical patent/JPH013028A/en
Priority claimed from JP62-157538A external-priority patent/JPH013028A/en
Publication of JPS643028A publication Critical patent/JPS643028A/en
Publication of JPH013028A publication Critical patent/JPH013028A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • C03B3/023—Preheating
    • 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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping

Abstract

PURPOSE:To produce silicic acid which is useful as a sealant for IC by heating the powdery feedstock with a combustion gas, preheating the feedstock with the waste combustion gas, thus increasing heat efficiency as well as productivity. CONSTITUTION:The feedstock such as silica sand 6 is sent from the hopper 1, through belt conveyer 2, funnel 3 and ejector 4 into the center of the upper burner 5 in the melting furnace 15. In the meantime, the combustion gas such as propane 16 is combusted at the top of the burner 5 to form a flame of high- temperature atmosphere so that the flame surrounds the feedstock to melt it completely in the melting zone 8. Then, the silicic acid rod 18 is drawn out of the opening 9 at the furnace bottom by means of the drawing unit 10 to produce the silicic acid rod. The exhaust gas 28 is sent through exhaust output 17, exhaust gas duct 11, control valve 21 into the hopper 11 and the funnel 3 to effect heat exchange with the feedstock, then allowed to pass through the dry dust collector 12, blower 13 and chimney 14 out to the air.
JP62-157538A 1987-06-26 Silicic acid production method Pending JPH013028A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62-157538A JPH013028A (en) 1987-06-26 Silicic acid production method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62-157538A JPH013028A (en) 1987-06-26 Silicic acid production method

Publications (2)

Publication Number Publication Date
JPS643028A true JPS643028A (en) 1989-01-06
JPH013028A JPH013028A (en) 1989-01-06

Family

ID=

Cited By (2)

* 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
JP2002097031A (en) * 2000-09-21 2002-04-02 Tosoh Quartz Corp Method and unit for producing long quartz glass

Cited By (4)

* 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
JP2002097031A (en) * 2000-09-21 2002-04-02 Tosoh Quartz Corp Method and unit for producing long quartz glass
JP4509342B2 (en) * 2000-09-21 2010-07-21 東ソー・クォーツ株式会社 Manufacturing method and apparatus for long quartz glass

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