FR2414079A1 - Procede pour reduire la deterioration des composants en metaux refractaires dans les fours electriques - Google Patents
Procede pour reduire la deterioration des composants en metaux refractaires dans les fours electriquesInfo
- Publication number
- FR2414079A1 FR2414079A1 FR7800441A FR7800441A FR2414079A1 FR 2414079 A1 FR2414079 A1 FR 2414079A1 FR 7800441 A FR7800441 A FR 7800441A FR 7800441 A FR7800441 A FR 7800441A FR 2414079 A1 FR2414079 A1 FR 2414079A1
- Authority
- FR
- France
- Prior art keywords
- refractory metal
- chromia
- oxidised
- preference
- contg
- 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.)
- Withdrawn
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
- C03B5/167—Means for preventing damage to equipment, e.g. by molten glass, hot gases, batches
- C03B5/1672—Use of materials therefor
- C03B5/1675—Platinum group metals
-
- 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
- C03B5/027—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture in electric furnaces, e.g. by dielectric heating by passing an electric current between electrodes immersed in the glass bath, i.e. by direct resistance 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
- C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
- C03B5/167—Means for preventing damage to equipment, e.g. by molten glass, hot gases, batches
- C03B5/1672—Use of materials therefor
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C13/00—Fibre or filament compositions
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
Abstract
L'INVENTION CONCERNE UN PROCEDE POUR REDUIRE LA DETERIORATION PAR OXYDATION INDUITE PAR L'OXYDE CHROMIQUE DE COMPOSANTS EN METAUX REFRACTAIRES TELS QUE LE MOLYBDENE, LE TUNGSTENE, LE RHENIUM, LE TANTALE, L'OSMIUM ET L'IRIDIUM DANS UN FOUR ELECTRIQUE DANS LEQUEL EST FONDU UN MELANGE D'OXYDES CONTENANT DE L'OXYDE CHROMIQUE. SELON L'INVENTION, ON AMENE DANS LE FOUR UN ADDITIF EN UNE QUANTITE MOINDRE QUE SON ETAT DE VALENCE MAXIMUM QUI PEUT ETRE OXYDE PAR LE BIOXYDE ET LE TRIOXYDE DE CHROME EN UN OXYDE DONT L'ENERGIE LIBRE DE FORMATION PAR MOLE D'OXYGENE EST PLUS FAIBLE QUE LES OXYDES DU METAL REFRACTAIRE ET CHROMIQUE, POUR QU'IL SOIT OXYDE DE PREFERENCE AU METAL REFRACTAIRE, QU'IL REDUISE LES OXYDES DE CHROME SUPERIEURS EN OXYDE CHROMIQUE ET FORME UN OXYDE INERTE AU METAL REFRACTAIRE. LE DESSIN JOINT MONTRE LES VARIATIONS DE L'ENERGIE LIBRE DE FORMATION PAR MOLE D'OXYGENE DE DIVERS OXYDES. L'INVENTION S'APPLIQUE NOTAMMENT A LA PREPARATION DE FIBRES REFRACTAIRES OU DE VERRE.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7800441A FR2414079A1 (fr) | 1978-01-09 | 1978-01-09 | Procede pour reduire la deterioration des composants en metaux refractaires dans les fours electriques |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7800441A FR2414079A1 (fr) | 1978-01-09 | 1978-01-09 | Procede pour reduire la deterioration des composants en metaux refractaires dans les fours electriques |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2414079A1 true FR2414079A1 (fr) | 1979-08-03 |
Family
ID=9203220
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7800441A Withdrawn FR2414079A1 (fr) | 1978-01-09 | 1978-01-09 | Procede pour reduire la deterioration des composants en metaux refractaires dans les fours electriques |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2414079A1 (fr) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2123427A1 (en) * | 1971-01-27 | 1972-09-08 | Carborundum Co | Refractory fibre casting nozzle assembly - with heat and wear resistant nozzle insert |
US3810745A (en) * | 1970-03-20 | 1974-05-14 | Owens Illinois Inc | Method of adding glass colorant composition |
-
1978
- 1978-01-09 FR FR7800441A patent/FR2414079A1/fr not_active Withdrawn
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3810745A (en) * | 1970-03-20 | 1974-05-14 | Owens Illinois Inc | Method of adding glass colorant composition |
FR2123427A1 (en) * | 1971-01-27 | 1972-09-08 | Carborundum Co | Refractory fibre casting nozzle assembly - with heat and wear resistant nozzle insert |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |