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NZ749316A - Electrolysis cell and a method for repairing same - Google Patents

Electrolysis cell and a method for repairing same

Info

Publication number
NZ749316A
NZ749316A NZ749316A NZ74931617A NZ749316A NZ 749316 A NZ749316 A NZ 749316A NZ 749316 A NZ749316 A NZ 749316A NZ 74931617 A NZ74931617 A NZ 74931617A NZ 749316 A NZ749316 A NZ 749316A
Authority
NZ
New Zealand
Prior art keywords
cell
steel
pot shell
corrosion
shell
Prior art date
Application number
NZ749316A
Inventor
Anders Lilleby
Eirik Hagen
Original Assignee
Norsk Hydro As
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
Application filed by Norsk Hydro As filed Critical Norsk Hydro As
Publication of NZ749316A publication Critical patent/NZ749316A/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/01—Layered products comprising a layer of metal all layers being exclusively metallic
    • B32B15/011—Layered products comprising a layer of metal all layers being exclusively metallic all layers being formed of iron alloys or steels
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/26—Ferrous alloys, e.g. steel alloys containing chromium with niobium or tantalum
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/28—Ferrous alloys, e.g. steel alloys containing chromium with titanium or zirconium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
    • 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
    • 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
    • C25C3/10—External supporting frames or structures
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/005—Ferrite

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Prevention Of Electric Corrosion (AREA)
  • Electrolytic Production Of Metals (AREA)

Abstract

An electrolysis cell of Hall-Héroult type for producing aluminium, where the materials of which the cell is made are selected to reduce the rate of corrosion of those materials in use, and hence increase the overall life of the cell; the cell has prebaked anodes of a carbonaceous material, and a cathode structure comprising a pot shell made out of a steel material and further having a bottom and sides supported by structural elements such as cradles and beams, wherein the cathode structure further comprises a protective and insulating lining inside the shell and a carbon based cathodic bottom with collector bars embedded therein, and where produced aluminium metal forms a layer onto said cathodic bottom, an electrolytic bath positioned above said aluminium metal where the anodes are in electrical contact with said electrolyte, wherein at least part of the steel pot shell and/or deck plates are made of a ferritic stainless steel (FSS) material. The method relates to a repair procedure for replacing parts of a commonly used carbon steel material with ferritic stainless steel material at least in parts of the steel pot shell and/or deck plates heavily exposed to corrosion and detonation. The replacement procedure can either result in a homogenous or composite material structure in affected areas.
NZ749316A 2016-07-13 2017-06-01 Electrolysis cell and a method for repairing same NZ749316A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO20161170A NO20161170A1 (en) 2016-07-13 2016-07-13 Electrolysis cell and a method for repairing same
PCT/NO2017/000018 WO2018012981A1 (en) 2016-07-13 2017-06-01 Electrolysis cell and a method for repairing same

Publications (1)

Publication Number Publication Date
NZ749316A true NZ749316A (en) 2019-08-30

Family

ID=60952140

Family Applications (1)

Application Number Title Priority Date Filing Date
NZ749316A NZ749316A (en) 2016-07-13 2017-06-01 Electrolysis cell and a method for repairing same

Country Status (8)

Country Link
EP (1) EP3491174A4 (en)
AU (1) AU2017297124B2 (en)
CA (1) CA3030237C (en)
EA (1) EA035328B1 (en)
NO (1) NO20161170A1 (en)
NZ (1) NZ749316A (en)
WO (1) WO2018012981A1 (en)
ZA (1) ZA201900087B (en)

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB225494A (en) * 1923-11-30 1925-02-26 Aluminum Co Of America Improvements in or relating to methods of operating and lining electrolytic cells for electrolytic refining
GB596066A (en) * 1944-07-31 1947-12-29 Ind De L Aluminium Sa Improvements relating to cells for the electrolytic production or refining of aluminium
LU29922A1 (en) * 1971-03-18
US3783121A (en) * 1972-03-24 1974-01-01 Aluminum Co Of America Magnetic field control in electrolysis cells
CH643602A5 (en) * 1979-10-17 1984-06-15 Alusuisse ELECTROLYSIS PAN.
US4561958A (en) * 1984-11-30 1985-12-31 Reynolds Metals Company Alumina reduction cell
US4608135A (en) * 1985-04-22 1986-08-26 Aluminum Company Of America Hall cell
NO158882C (en) * 1985-11-01 1988-11-09 Mosal Alu Elkem Spigerverk CATO BOX FOR ELECTROLYCLE CELLS AND PROCEDURES FOR THE MANUFACTURE OF CATALOG FOR ELECTROLYCLE CELLS.
US6245201B1 (en) * 1999-08-03 2001-06-12 John S. Rendall Aluminum smelting pot-cell
AU769833B2 (en) * 1999-08-13 2004-02-05 Sra Technologies Pty Ltd Anode assembly
AUPQ218899A0 (en) * 1999-08-13 1999-09-02 Jakovac, Vjekoslav Anode assembly comprising separation of electrical and mechanical functions of the assembly
DE10122326A1 (en) * 2001-05-08 2002-11-14 Norddeutsche Affinerie Process for repairing electrolysis cathodes
AU2002360120B2 (en) * 2002-10-14 2008-08-14 Aluminium Pechiney Electrolytic cell leak limiter
CN101709485B (en) * 2009-12-18 2012-07-04 中国铝业股份有限公司 Aluminum electrolytic cell for producing virgin aluminum by inert anode
CN102230186B (en) * 2011-06-29 2012-12-12 东北大学设计研究院（有限公司） Cell shell device of aluminum electrolytic cell
CN103397346B (en) * 2013-08-05 2015-09-30 甘肃工大电子科技有限公司 Aluminum electrolytic cell crust-breaking hammer head is automatic detection device on earth

Also Published As

Publication number Publication date
EA035328B1 (en) 2020-05-28
AU2017297124A1 (en) 2019-01-03
EP3491174A4 (en) 2020-08-19
WO2018012981A1 (en) 2018-01-18
CA3030237C (en) 2023-08-08
BR112018076872A2 (en) 2019-04-02
EP3491174A1 (en) 2019-06-05
EA201990280A1 (en) 2019-07-31
AU2017297124B2 (en) 2022-07-14
NO20161170A1 (en) 2018-01-15
ZA201900087B (en) 2019-10-30
CA3030237A1 (en) 2018-01-18

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Legal Events

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PSEA Patent sealed
RENW Renewal (renewal fees accepted)

Free format text: PATENT RENEWED FOR 1 YEAR UNTIL 01 JUN 2022 BY DENNEMEYER + CO. S.A.R.L.

Effective date: 20210526

RENW Renewal (renewal fees accepted)

Free format text: PATENT RENEWED FOR 1 YEAR UNTIL 01 JUN 2023 BY DENNEMEYER + CO. S.A.R.L.

Effective date: 20220523

RENW Renewal (renewal fees accepted)

Free format text: PATENT RENEWED FOR 1 YEAR UNTIL 01 JUN 2024 BY DENNEMEYER + CO.

Effective date: 20230522

RENW Renewal (renewal fees accepted)

Free format text: PATENT RENEWED FOR 1 YEAR UNTIL 01 JUN 2025 BY DENNEMEYER + CO. S.A R.L.

Effective date: 20240523