GB676413A - Improvements in electric furnaces for the treatment of materials such as glass - Google Patents
Improvements in electric furnaces for the treatment of materials such as glassInfo
- Publication number
- GB676413A GB676413A GB13572/48A GB1357248A GB676413A GB 676413 A GB676413 A GB 676413A GB 13572/48 A GB13572/48 A GB 13572/48A GB 1357248 A GB1357248 A GB 1357248A GB 676413 A GB676413 A GB 676413A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sleeve
- electrode
- graphite
- molten mass
- air
- 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
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/02—Details
- H05B3/03—Electrodes
Landscapes
- Furnace Details (AREA)
Abstract
676,413. Mounting furnace electrodes. SOC. ANON. DES MANUFACTURES DES GLACES ET PRODUITS CHIMIQUES DE ST.-GOBAIN, CHAUNY & CIREY. May 19, 1948 [May 21, 1947], No. 13572/48. Class 39(iii) In furnaces having graphite electrodes traversing the furnace walls below the surface of the molten mass, a portion of each electrode is received as a close sliding fit in a member extending at least part way through the furnace wall from the outside, that portion of the member that is in contact with the electrode being wholly constituted of material having a coefficient of expansion close to that of graphite and a low coefficient of friction in relation to graphite. In Fig. 1, the member is a sleeve 4 surrounded by a casing or deposit 6 of metal or other material impermeable to air, such as silicates of high melting point. A cooling gas is passed through a box 7 surrounding the sheath 6. In Fig. 2, gaseous jets from a box 7 surrounding the electrode 3 cool the end of the sleeve 4. The sleeve 4 may be of carbon and, in particular, of graphite and is axially displaceable as is also the electrode 3. The sleeve 4 prevents air from contacting that region of the electrode which reaches a temperature at which the carbon or graphite will burn in air. The cooling means may be regulated such that the molten mass 2 contacting the sleeve 4 remains in a fluid condtion. The molten mass 2 may be glass.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR676413X | 1947-05-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB676413A true GB676413A (en) | 1952-07-30 |
Family
ID=9019878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB13572/48A Expired GB676413A (en) | 1947-05-21 | 1948-05-19 | Improvements in electric furnaces for the treatment of materials such as glass |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB676413A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2464447A1 (en) * | 1979-08-29 | 1981-03-06 | Bfg Glassgroup | Sealed electrode assembly - esp. for glass-melting furnaces is protected from atmospheric oxidn. |
-
1948
- 1948-05-19 GB GB13572/48A patent/GB676413A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2464447A1 (en) * | 1979-08-29 | 1981-03-06 | Bfg Glassgroup | Sealed electrode assembly - esp. for glass-melting furnaces is protected from atmospheric oxidn. |
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