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
Application number
ES88420430T
Other languages
Spanish (es)
Inventor
Gabriel Audras
Bernard Samanos
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Societe des Electrodes et Refractaires Savoie SA
Original Assignee
Societe des Electrodes et Refractaires Savoie SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from FR878718452A external-priority patent/FR2624886B2/en
Application filed by Societe des Electrodes et Refractaires Savoie SA filed Critical Societe des Electrodes et Refractaires Savoie SA
Application granted granted Critical
Publication of ES2043877T3 publication Critical patent/ES2043877T3/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25CPROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
    • C25C3/00Electrolytic production, recovery or refining of metals by electrolysis of melts
    • C25C3/06Electrolytic production, recovery or refining of metals by electrolysis of melts of aluminium
    • C25C3/08Cell construction, e.g. bottoms, walls, cathodes
    • C25C3/12Anodes
    • C25C3/125Anodes based on carbon
    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25CPROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
    • C25C7/00Constructional parts, or assemblies thereof, of cells; Servicing or operating of cells
    • C25C7/02Electrodes; Connections thereof
    • C25C7/025Electrodes; 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.

ES88420430T 1987-12-22 1988-12-21 IMPROVEMENTS IN COATS FOR PROTECTION OF STEMS FROM PRE-COOKED ANODES AND THE EMERGING PART OF THESE ANODES. Expired - Lifetime ES2043877T3 (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

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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