JPS643027A - Production of silicic acid - Google Patents

Production of silicic acid

Info

Publication number
JPS643027A
JPS643027A JP15753787A JP15753787A JPS643027A JP S643027 A JPS643027 A JP S643027A JP 15753787 A JP15753787 A JP 15753787A JP 15753787 A JP15753787 A JP 15753787A JP S643027 A JPS643027 A JP S643027A
Authority
JP
Japan
Prior art keywords
silicic acid
melt
unit
furnace
sent
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
JP15753787A
Other languages
Japanese (ja)
Other versions
JPH013027A (en
Inventor
Katsuhiro Takemoto
Atsushi Yamana
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 JP15753787A priority Critical patent/JPS643027A/en
Publication of JPH013027A publication Critical patent/JPH013027A/en
Publication of JPS643027A publication Critical patent/JPS643027A/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
    • C03B5/24—Automatically regulating the melting process
    • C03B5/245—Regulating the melt or batch level, depth or thickness
    • 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

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 produce silicic acid of high quality which is useful for sealing IC by controlling the drawing-out speed of the silicic acid rod, as the melt level of the silicic acid is measured in the furnace. CONSTITUTION:Silicic acid is melted in the furnace 1 to form melt of silicic acid 2. Electromagnetic laser waves are sent from the transmitter-receiver unit 9 to the surface 8 of the silicic acid melt 2 and the reflection is received with the unit 9 to detect the height of the surface level 8 from the phase difference. The detected value is sent to the control unit 10 and the drawing-out speed of the silicic acid rod 5 from the narrowed bottom part 3 is adjusted by increasing or decreasing the rotation number of the motor 11 for the drawing unit 4 depending upon the difference between the detected value and the desired level height.
JP15753787A 1987-06-26 1987-06-26 Production of silicic acid Pending JPS643027A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15753787A JPS643027A (en) 1987-06-26 1987-06-26 Production of silicic acid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15753787A JPS643027A (en) 1987-06-26 1987-06-26 Production of silicic acid

Publications (2)

Publication Number Publication Date
JPH013027A JPH013027A (en) 1989-01-06
JPS643027A true JPS643027A (en) 1989-01-06

Family

ID=15651847

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15753787A Pending JPS643027A (en) 1987-06-26 1987-06-26 Production of silicic acid

Country Status (1)

Country Link
JP (1) JPS643027A (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
JP2006342041A (en) * 2005-06-10 2006-12-21 General Electric Co <Ge> Free-formed quartz glass ingot and method for producing the same
JP2013503100A (en) * 2009-08-25 2013-01-31 ピラー エルティーディー． Method for producing polycrystalline silicon ingot by induction method

Cited By (5)

* 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
JP2002520249A (en) * 1998-07-15 2002-07-09 サン−ゴバン クオーツ パブリック リミティド カンパニー Method and apparatus for producing glass ingots 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
JP2006342041A (en) * 2005-06-10 2006-12-21 General Electric Co <Ge> Free-formed quartz glass ingot and method for producing the same
JP2013503100A (en) * 2009-08-25 2013-01-31 ピラー エルティーディー． Method for producing polycrystalline silicon ingot by induction method

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