ES2043877T3 - IMPROVEMENTS IN COATS FOR PROTECTION OF STEMS FROM PRE-COOKED ANODES AND THE EMERGING PART OF THESE ANODES. - Google Patents
IMPROVEMENTS IN COATS FOR PROTECTION OF STEMS FROM PRE-COOKED ANODES AND THE EMERGING PART OF THESE ANODES.Info
- Publication number
- ES2043877T3 ES2043877T3 ES88420430T ES88420430T ES2043877T3 ES 2043877 T3 ES2043877 T3 ES 2043877T3 ES 88420430 T ES88420430 T ES 88420430T ES 88420430 T ES88420430 T ES 88420430T ES 2043877 T3 ES2043877 T3 ES 2043877T3
- Authority
- ES
- Spain
- Prior art keywords
- anodes
- protection
- coats
- stems
- emerging part
- 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 - Lifetime
Links
- -1 LOW ALUMINATE Chemical class 0.000 abstract 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 abstract 1
- XLYOFNOQVPJJNP-PWCQTSIFSA-N Tritiated water Chemical compound [3H]O[3H] XLYOFNOQVPJJNP-PWCQTSIFSA-N 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
- 239000004568 cement Substances 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 238000005260 corrosion Methods 0.000 abstract 1
- 230000007797 corrosion Effects 0.000 abstract 1
- 238000005868 electrolysis reaction Methods 0.000 abstract 1
- 239000012535 impurity Substances 0.000 abstract 1
- 229910052749 magnesium Inorganic materials 0.000 abstract 1
- 239000011777 magnesium Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 230000003647 oxidation Effects 0.000 abstract 1
- 238000007254 oxidation reaction Methods 0.000 abstract 1
- 229910052596 spinel Inorganic materials 0.000 abstract 1
- 239000011029 spinel Substances 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C3/00—Electrolytic production, recovery or refining of metals by electrolysis of melts
- C25C3/06—Electrolytic production, recovery or refining of metals by electrolysis of melts of aluminium
- C25C3/08—Cell construction, e.g. bottoms, walls, cathodes
- C25C3/12—Anodes
- C25C3/125—Anodes based on carbon
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C7/00—Constructional parts, or assemblies thereof, of cells; Servicing or operating of cells
- C25C7/02—Electrodes; Connections thereof
- C25C7/025—Electrodes; Connections thereof used in cells for the electrolysis of melts
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electrolytic Production Of Metals (AREA)
- Prevention Of Electric Corrosion (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
LA INVENCION SE REFIERE A UN PERFECCIONAMIENTO DE LOS REVESTIMENTOS DE PROTECCION CONTRA LA CORROSION Y LA OXIDACION AL CALOR DE RODILLOS DE ANODOS PRECOCIDOS Y DE LA PARTE EMERGENTE DE ESTOS ANODOS DESTINADOS A CUVAS DE ELECTROLISIS PARA LA PRODUCCION DE ALUMINIO POR EL PROCEDIMIENTO HALL - HEROULT, SEGUN LA REIVINDICACION 1 DE LA PATENTE PRINCIPAL. EL REVESTIMENTO ESTA FORMADO POR UNA MEZCLA DE CEMENTO DE ALUMINATO DE CAL DE DEBIL CONTENIDO DE IMPUREZAS MOLESTAS CON UN CONTENIDO EN ALUMINA AL MENOS IGUAL A 70% Y DE ESPINELODE MAGNESIO, UNIDOS CON AGUA, EN LAS PROPORCIONES INDICADAS.THE INVENTION REFERS TO A PERFECTION OF THE PROTECTION COATINGS AGAINST THE CORROSION AND THE OXIDATION TO THE HEAT OF ROLLS OF PRECIOUS ANODES AND OF THE EMERGING PART OF THESE ANODES DESTINED FOR ELECTROLYSIS CAVES, BY HALIMERO, BY PROCEDURE. ACCORDING TO CLAIM 1 OF THE MAIN PATENT. THE COATING IS FORMED BY A MIXTURE OF LOW ALUMINATE CEMENT LOW CONTENTS OF ANNOYING IMPURITIES WITH A CONTENT IN ALUMINA AT LEAST 70% AND OF MAGNESIUM SPINEL, UNITED WITH WATER, IN THE INDICATED PROPORTIONS.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR878718452A FR2624886B2 (en) | 1986-11-14 | 1987-12-22 | IMPROVEMENT IN PROTECTIVE COATINGS FOR PRE-COOKED ANODES AND THE EMERGING PART OF THESE ANODES |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES2043877T3 true ES2043877T3 (en) | 1994-01-01 |
Family
ID=9358501
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES88420430T Expired - Lifetime ES2043877T3 (en) | 1987-12-22 | 1988-12-21 | IMPROVEMENTS IN COATS FOR PROTECTION OF STEMS FROM PRE-COOKED ANODES AND THE EMERGING PART OF THESE ANODES. |
Country Status (9)
| Country | Link |
|---|---|
| EP (1) | EP0322326B1 (en) |
| AU (1) | AU610964B2 (en) |
| BR (1) | BR8806778A (en) |
| CA (1) | CA1340408C (en) |
| DE (1) | DE3873713T2 (en) |
| ES (1) | ES2043877T3 (en) |
| IN (1) | IN169360B (en) |
| IS (1) | IS1465B6 (en) |
| NO (1) | NO885645L (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2606796B1 (en) * | 1986-11-14 | 1989-02-03 | Savoie Electrodes Refract | PROTECTIVE COATING FOR PRE-COOKED ANODE ROUND |
| NO930957L (en) * | 1993-03-17 | 1994-09-19 | Norsk Hydro As | Marterial composite for oxidation and corrosion protection of anode nipples |
| US6818106B2 (en) * | 2002-01-25 | 2004-11-16 | Alcoa Inc. | Inert anode assembly |
| WO2004035870A1 (en) * | 2002-10-18 | 2004-04-29 | Moltech Invent S.A. | Anode current feeding connection stem |
| ES2644864T3 (en) * | 2002-11-25 | 2017-11-30 | Alcoa Inc. | Inert Anode Assembly |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1365820A (en) * | 1972-02-15 | 1974-09-04 | Zirconal Processes Ltd | Coating composition suitable for use at high temperatures |
| FR2411166A1 (en) * | 1977-12-12 | 1979-07-06 | Lafarge Fondu Int | REFRACTORY HYDRAULIC BINDER BASED ON CALCIUM ALUMINATE AND ITS PREPARATION PROCESS |
| US4354918A (en) * | 1981-01-14 | 1982-10-19 | Martin Marietta Corporation | Anode stud coatings for electrolytic cells |
| JPS61111983A (en) * | 1984-11-02 | 1986-05-30 | ミサワホ−ム株式会社 | Manufacture of foamed concrete |
| BR8500347A (en) * | 1985-01-25 | 1986-09-09 | Ardal Og Sunndal Verk | PRE-COOKED ANODE WITH REDUCED CARBON LOSS FOR EMPLOYMENT IN ALUMINUM PRODUCTION BY REDUCTION BY ELECTROLYTIC FUSION AND THE PROCESS TO PRODUCE THE SAME |
-
1988
- 1988-11-21 IN IN814/MAS/88A patent/IN169360B/en unknown
- 1988-12-19 CA CA 586322 patent/CA1340408C/en not_active Expired - Fee Related
- 1988-12-20 NO NO88885645A patent/NO885645L/en unknown
- 1988-12-21 DE DE19883873713 patent/DE3873713T2/en not_active Expired - Fee Related
- 1988-12-21 ES ES88420430T patent/ES2043877T3/en not_active Expired - Lifetime
- 1988-12-21 EP EP19880420430 patent/EP0322326B1/en not_active Expired - Lifetime
- 1988-12-21 IS IS3424A patent/IS1465B6/en unknown
- 1988-12-21 AU AU27429/88A patent/AU610964B2/en not_active Ceased
- 1988-12-21 BR BR8806778A patent/BR8806778A/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| AU2742988A (en) | 1989-06-22 |
| DE3873713D1 (en) | 1992-09-17 |
| EP0322326B1 (en) | 1992-08-12 |
| NO885645L (en) | 1989-06-23 |
| IS3424A7 (en) | 1989-06-23 |
| IS1465B6 (en) | 1991-03-26 |
| DE3873713T2 (en) | 1993-02-11 |
| BR8806778A (en) | 1989-08-29 |
| IN169360B (en) | 1991-09-28 |
| CA1340408C (en) | 1999-02-23 |
| EP0322326A1 (en) | 1989-06-28 |
| AU610964B2 (en) | 1991-05-30 |
| NO885645D0 (en) | 1988-12-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FG2A | Definitive protection |
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