GB1404313A - Manufacture of high purity glass - Google Patents
Manufacture of high purity glassInfo
- Publication number
- GB1404313A GB1404313A GB3807871A GB3807871A GB1404313A GB 1404313 A GB1404313 A GB 1404313A GB 3807871 A GB3807871 A GB 3807871A GB 3807871 A GB3807871 A GB 3807871A GB 1404313 A GB1404313 A GB 1404313A
- Authority
- GB
- United Kingdom
- Prior art keywords
- admixture
- crucible
- glass
- heating
- high purity
- 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.)
- Expired
Links
- 239000011521 glass Substances 0.000 title abstract 5
- 238000004519 manufacturing process Methods 0.000 title 1
- 238000010438 heat treatment Methods 0.000 abstract 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 4
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 abstract 2
- 230000006698 induction Effects 0.000 abstract 2
- 239000000155 melt Substances 0.000 abstract 2
- 230000008018 melting Effects 0.000 abstract 2
- 238000002844 melting Methods 0.000 abstract 2
- 239000000377 silicon dioxide Substances 0.000 abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 2
- MQWCQFCZUNBTCM-UHFFFAOYSA-N 2-tert-butyl-6-(3-tert-butyl-2-hydroxy-5-methylphenyl)sulfanyl-4-methylphenol Chemical compound CC(C)(C)C1=CC(C)=CC(SC=2C(=C(C=C(C)C=2)C(C)(C)C)O)=C1O MQWCQFCZUNBTCM-UHFFFAOYSA-N 0.000 abstract 1
- 229910052582 BN Inorganic materials 0.000 abstract 1
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 abstract 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 1
- 229910004298 SiO 2 Inorganic materials 0.000 abstract 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract 1
- 229910052782 aluminium Inorganic materials 0.000 abstract 1
- 239000004411 aluminium Substances 0.000 abstract 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract 1
- 230000007423 decrease Effects 0.000 abstract 1
- 230000005672 electromagnetic field Effects 0.000 abstract 1
- 229910002804 graphite Inorganic materials 0.000 abstract 1
- 239000010439 graphite Substances 0.000 abstract 1
- 239000012535 impurity Substances 0.000 abstract 1
- 239000004615 ingredient Substances 0.000 abstract 1
- 239000000395 magnesium oxide Substances 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- ZCUFMDLYAMJYST-UHFFFAOYSA-N thorium dioxide Chemical compound O=[Th]=O ZCUFMDLYAMJYST-UHFFFAOYSA-N 0.000 abstract 1
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
- C03B5/02—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture in electric furnaces, e.g. by dielectric heating
-
- 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
- C03B5/02—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture in electric furnaces, e.g. by dielectric heating
- C03B5/021—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture in electric furnaces, e.g. by dielectric heating by induction heating
-
- 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
- C03B5/02—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture in electric furnaces, e.g. by dielectric heating
- C03B5/033—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture in electric furnaces, e.g. by dielectric heating by using resistance heaters above or in the glass bath, i.e. by indirect resistance heating
- C03B5/0334—Pot furnaces; Core furnaces
-
- 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
- C03B5/18—Stirring devices; Homogenisation
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2211/00—Heating processes for glass melting in glass melting furnaces
- C03B2211/70—Skull melting, i.e. melting or refining in cooled wall crucibles or within solidified glass crust, e.g. in continuous walled vessels
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Glass Compositions (AREA)
Abstract
1404313 High purity glass DEFENCE SECRETARY OF STATE FOR 13 Nov 1972 [13 Aug 1971] 38078/71 Heading C1M High purity glass is produced by providing an electrically conducting admixture of the ingredients of the glass in a high-purity, electrically insulating refractory crucible, and heating and melting the admixture by generation of heat by an electromagnetic field generated within the admixture by an external source of alternating current electrical power, thereby maintaining a temperature gradient during melting in which the temperature decreases with increasing distance from the melt so that volatile impurities are discouraged from diffusing into the melt from the crucible and the surrounding environment. The admixture may be melted in crucible 1 by induction heating using coil assembly 7. A signal frequency of 450 KHz to 5 MHz may be used. The admixture may be preheated to a temperature at which it has a resistivity of less than 10 ohm. cm. (e.g. 650-1100‹ C. for a glass of composition SiO 2 70% (by weight), Na 2 O 24%, CaO 6%) in a preheating electrical resistance furnace 6. The pre-heating may also be achieved by induction heating of a graphite susceptor sheathed in silica (Fig. 3, not shown). Both the crucible 1 and coil 7 may be cooled by water or air-jets. The admixture may alternatively be heated by dielectric heating. Crucible 11 is mounted between aluminium plate electrodes 13, which may be water cooled, and rotated while being heated by application of several kilovolts to the electrodes. In either embodiment the crucible may be formed from alumina, silica, magnesia, thoria or boron nitride.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3807871A GB1404313A (en) | 1971-08-13 | 1971-08-13 | Manufacture of high purity glass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3807871A GB1404313A (en) | 1971-08-13 | 1971-08-13 | Manufacture of high purity glass |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1404313A true GB1404313A (en) | 1975-08-28 |
Family
ID=10401028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3807871A Expired GB1404313A (en) | 1971-08-13 | 1971-08-13 | Manufacture of high purity glass |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1404313A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0894771A3 (en) * | 1997-07-29 | 1999-04-07 | CSELT Centro Studi e Laboratori Telecomunicazioni S.p.A. | Improvements to induction furnaces for the synthesis of glasses |
| DE10133469A1 (en) * | 2001-07-10 | 2003-02-06 | Schott Glas | Device for melting and refining high-purity optical glasses |
| CN116332475A (en) * | 2022-09-07 | 2023-06-27 | 湖北新华光信息材料有限公司 | Glass smelting equipment and using method |
-
1971
- 1971-08-13 GB GB3807871A patent/GB1404313A/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0894771A3 (en) * | 1997-07-29 | 1999-04-07 | CSELT Centro Studi e Laboratori Telecomunicazioni S.p.A. | Improvements to induction furnaces for the synthesis of glasses |
| US6014403A (en) * | 1997-07-29 | 2000-01-11 | Cselt- Centro Studi E Laboratori Telecomunicazioni S.P.A. | Induction furnaces for the synthesis of glasses |
| DE10133469A1 (en) * | 2001-07-10 | 2003-02-06 | Schott Glas | Device for melting and refining high-purity optical glasses |
| DE10133469B4 (en) * | 2001-07-10 | 2004-10-14 | Schott Glas | Device for melting high-purity optical glasses |
| CN116332475A (en) * | 2022-09-07 | 2023-06-27 | 湖北新华光信息材料有限公司 | Glass smelting equipment and using method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |