JPS643027A - Production of silicic acid - Google Patents
Production of silicic acidInfo
- 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
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.
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)
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 ingots and method for making 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 |
-
1987
- 1987-06-26 JP JP15753787A patent/JPS643027A/en active Pending
Cited By (5)
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 ingots and method for making 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 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
MY103936A (en) | Manufacturing method and equipment of single silicon crystal | |
IE810697L (en) | Preparation of cephalosporin derivatives and intermediates¹therefor | |
EP0523397A3 (en) | Method for production of the yaw rate or the transversal speed | |
IE882335L (en) | Pyridinium derivatives, their production and use | |
FR2339423A1 (en) | THIN SURFACE EVAPORATOR, ESPECIALLY FOR PRODUCTS WITH HIGH BOILING TEMPERATURE | |
JPS643027A (en) | Production of silicic acid | |
EP0424909A3 (en) | Method for the production of formed articles | |
HU904020D0 (en) | Process for producing carboxylic acid derivatives substituted by arylsulfonamido and pyridyl or imidazolyl groups | |
EP0174004A3 (en) | Process for making a crystalline article from a melt | |
DE3366151D1 (en) | Process for production of steel by the melt-down of iron-sponge in an electric-arc-furnace | |
KR960031659A (en) | Silicon monocrystalline ingot and manufacturing method thereof | |
BE851251A (en) | INSTALLATION FOR THE CONTINUOUS MANUFACTURING AND PACKAGING OF FOOD PRODUCTS SUCH AS BISCOTTES | |
BE884889A (en) | PROCESS FOR PRODUCING INTERMEDIATE COMPOUNDS FOR OBTAINING SPECTINOMYCIN AND THE LIKE THEREOF AND PRODUCTS THEREOF | |
HU900498D0 (en) | Process for the production of fermented food products | |
DE3361336D1 (en) | Process for the preparation of 3-vinyl-substituted 2,2-dimethyl-cyclopropane-1-carboxylic acids or their esters, and intermediate products therefor | |
BE833311A (en) | AERODYNAMIC FEEDER-SORTER FOR THE PACKAGING OF ARTICLES OR PRODUCTS | |
JPS54157684A (en) | Measuring method for position of center of gravity | |
JPS5265351A (en) | Control method of interior temperature | |
SU850706A1 (en) | Device for thermal strengthening of railroad wheels | |
JPS55133814A (en) | Looper controller for hot rolling mill | |
JPS5482383A (en) | Manufacturing apparatus for single crystal | |
SU1605539A1 (en) | Blank production method | |
SU916925A1 (en) | Spray drying process automatic control method | |
DE3172432D1 (en) | New cephalosporin derivatives, their production and their use | |
FR2315069A1 (en) | REFRIGERATED CONTAINER FOR THE CONSERVATION OF PERISABLE PRODUCTS |