CA2505285C - Aluminium electrowinning cells with metal-based anodes - Google Patents

Aluminium electrowinning cells with metal-based anodes Download PDF

Info

Publication number: CA2505285C
Authority: CA; Canada
Prior art keywords: weight; cell; aluminium; anode; fluoride
Prior art date: 2003-02-20
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 - Fee Related

Application number

CA2505285A

Other languages

English (en)

French (fr)

Other versions

CA2505285A1 (en

Inventor

Vittorio De Nora

Thinh T. Nguyen

Jean-Jacques Duruz

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.)

Rio Tinto Alcan International Ltd

Original Assignee

Rio Tinto Alcan International Ltd

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.)

2003-02-20

Filing date

2004-02-18

Publication date

2012-07-17

2004-02-18 Application filed by Rio Tinto Alcan International Ltd filed Critical Rio Tinto Alcan International Ltd

2004-09-02 Publication of CA2505285A1 publication Critical patent/CA2505285A1/en

2012-07-17 Application granted granted Critical

2012-07-17 Publication of CA2505285C publication Critical patent/CA2505285C/en

2024-02-18 Anticipated expiration legal-status Critical

Status Expired - Fee Related legal-status Critical Current

Links

239000004411 aluminium Substances 0.000 title claims abstract description 78
229910052782 aluminium Inorganic materials 0.000 title claims abstract description 78
XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 78
229910052751 metal Inorganic materials 0.000 title claims abstract description 35
239000002184 metal Substances 0.000 title claims abstract description 35
238000005363 electrowinning Methods 0.000 title claims abstract description 20
PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 113
239000003792 electrolyte Substances 0.000 claims abstract description 110
XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 88
PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 65
229910052759 nickel Inorganic materials 0.000 claims abstract description 52
229910052742 iron Inorganic materials 0.000 claims abstract description 44
NROKBHXJSPEDAR-UHFFFAOYSA-M potassium fluoride Chemical compound [F-].[K+] NROKBHXJSPEDAR-UHFFFAOYSA-M 0.000 claims abstract description 38
KLZUFWVZNOTSEM-UHFFFAOYSA-K Aluminium flouride Chemical compound F[Al](F)F KLZUFWVZNOTSEM-UHFFFAOYSA-K 0.000 claims abstract description 36
238000000576 coating method Methods 0.000 claims abstract description 34
239000011248 coating agent Substances 0.000 claims abstract description 31
239000010941 cobalt Substances 0.000 claims abstract description 27
229910017052 cobalt Inorganic materials 0.000 claims abstract description 27
GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims abstract description 27
239000000470 constituent Substances 0.000 claims abstract description 24
239000011698 potassium fluoride Substances 0.000 claims abstract description 22
PUZPDOWCWNUUKD-UHFFFAOYSA-M sodium fluoride Chemical compound [F-].[Na+] PUZPDOWCWNUUKD-UHFFFAOYSA-M 0.000 claims abstract description 21
235000003270 potassium fluoride Nutrition 0.000 claims abstract description 19
229910052799 carbon Inorganic materials 0.000 claims abstract description 13
235000013024 sodium fluoride Nutrition 0.000 claims abstract description 10
239000011775 sodium fluoride Substances 0.000 claims abstract description 10
KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 claims abstract description 9
WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 claims abstract description 9
XVVDIUTUQBXOGG-UHFFFAOYSA-N [Ce].FOF Chemical compound [Ce].FOF XVVDIUTUQBXOGG-UHFFFAOYSA-N 0.000 claims abstract description 8
229910001634 calcium fluoride Inorganic materials 0.000 claims abstract description 8
229910045601 alloy Inorganic materials 0.000 claims description 28
239000000956 alloy Substances 0.000 claims description 28
UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 26
RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 16
239000010949 copper Substances 0.000 claims description 16
229910052802 copper Inorganic materials 0.000 claims description 15
239000010955 niobium Substances 0.000 claims description 13
OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 12
229910052735 hafnium Inorganic materials 0.000 claims description 12
VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 claims description 12
229910052758 niobium Inorganic materials 0.000 claims description 12
GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims description 12
150000002739 metals Chemical class 0.000 claims description 11
GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 10
QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 10
PQXKHYXIUOZZFA-UHFFFAOYSA-M lithium fluoride Chemical compound [Li+].[F-] PQXKHYXIUOZZFA-UHFFFAOYSA-M 0.000 claims description 10
229910052760 oxygen Inorganic materials 0.000 claims description 10
239000001301 oxygen Substances 0.000 claims description 10
239000000463 material Substances 0.000 claims description 8
OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 8
JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 6
239000010406 cathode material Substances 0.000 claims description 5
XJHCXCQVJFPJIK-UHFFFAOYSA-M caesium fluoride Chemical compound [F-].[Cs+] XJHCXCQVJFPJIK-UHFFFAOYSA-M 0.000 claims description 4
238000000034 method Methods 0.000 claims description 4
AHLATJUETSFVIM-UHFFFAOYSA-M rubidium fluoride Chemical compound [F-].[Rb+] AHLATJUETSFVIM-UHFFFAOYSA-M 0.000 claims description 4
238000009736 wetting Methods 0.000 claims description 4
229910000531 Co alloy Inorganic materials 0.000 claims description 3
229910000990 Ni alloy Inorganic materials 0.000 claims description 3
229910001635 magnesium fluoride Inorganic materials 0.000 claims description 3
KEAYESYHFKHZAL-UHFFFAOYSA-N Sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 claims description 2
OYLGJCQECKOTOL-UHFFFAOYSA-L barium fluoride Chemical compound [F-].[F-].[Ba+2] OYLGJCQECKOTOL-UHFFFAOYSA-L 0.000 claims description 2
229910001632 barium fluoride Inorganic materials 0.000 claims description 2
QCCDYNYSHILRDG-UHFFFAOYSA-K cerium(3+);trifluoride Chemical compound [F-].[F-].[F-].[Ce+3] QCCDYNYSHILRDG-UHFFFAOYSA-K 0.000 claims description 2
239000011195 cermet Substances 0.000 claims description 2
239000003795 chemical substances by application Substances 0.000 claims description 2
239000002019 doping agent Substances 0.000 claims description 2
ORUIBWPALBXDOA-UHFFFAOYSA-L magnesium fluoride Chemical compound [F-].[F-].[Mg+2] ORUIBWPALBXDOA-UHFFFAOYSA-L 0.000 claims description 2
150000001247 metal acetylides Chemical class 0.000 claims description 2
150000004767 nitrides Chemical class 0.000 claims description 2
FVRNDBHWWSPNOM-UHFFFAOYSA-L strontium fluoride Chemical compound [F-].[F-].[Sr+2] FVRNDBHWWSPNOM-UHFFFAOYSA-L 0.000 claims description 2
229910001637 strontium fluoride Inorganic materials 0.000 claims description 2
IVMYJDGYRUAWML-UHFFFAOYSA-N cobalt(ii) oxide Chemical class [Co]=O IVMYJDGYRUAWML-UHFFFAOYSA-N 0.000 claims 1
229910052595 hematite Inorganic materials 0.000 abstract description 6
239000011019 hematite Substances 0.000 abstract description 6
LIKBJVNGSGBSGK-UHFFFAOYSA-N iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Fe+3].[Fe+3] LIKBJVNGSGBSGK-UHFFFAOYSA-N 0.000 abstract description 6
239000010410 layer Substances 0.000 description 27
239000000203 mixture Substances 0.000 description 27
238000005868 electrolysis reaction Methods 0.000 description 17
239000002245 particle Substances 0.000 description 13
238000011109 contamination Methods 0.000 description 10
235000013980 iron oxide Nutrition 0.000 description 10
238000004519 manufacturing process Methods 0.000 description 10
230000000052 comparative effect Effects 0.000 description 9
-1 aluminium oxyfluoride ions Chemical class 0.000 description 8
238000004090 dissolution Methods 0.000 description 7
230000001464 adherent effect Effects 0.000 description 6
230000003647 oxidation Effects 0.000 description 6
238000007254 oxidation reaction Methods 0.000 description 6
238000001816 cooling Methods 0.000 description 5
150000001785 cerium compounds Chemical class 0.000 description 4
238000005260 corrosion Methods 0.000 description 4
230000007797 corrosion Effects 0.000 description 4
229910001610 cryolite Inorganic materials 0.000 description 4
DBJLJFTWODWSOF-UHFFFAOYSA-L nickel(ii) fluoride Chemical compound F[Ni]F DBJLJFTWODWSOF-UHFFFAOYSA-L 0.000 description 4
239000011148 porous material Substances 0.000 description 4
239000011253 protective coating Substances 0.000 description 4
230000001681 protective effect Effects 0.000 description 4
238000012360 testing method Methods 0.000 description 4
YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 3
229910001030 Iron–nickel alloy Inorganic materials 0.000 description 3
ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 3
239000000654 additive Substances 0.000 description 3
239000011737 fluorine Substances 0.000 description 3
229910052731 fluorine Inorganic materials 0.000 description 3
239000007789 gas Substances 0.000 description 3
238000011065 in-situ storage Methods 0.000 description 3
238000002161 passivation Methods 0.000 description 3
229910052700 potassium Inorganic materials 0.000 description 3
239000011591 potassium Substances 0.000 description 3
238000010079 rubber tapping Methods 0.000 description 3
239000000758 substrate Substances 0.000 description 3
239000002344 surface layer Substances 0.000 description 3
229910052582 BN Inorganic materials 0.000 description 2
PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 2
VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
229910000640 Fe alloy Inorganic materials 0.000 description 2
239000004372 Polyvinyl alcohol Substances 0.000 description 2
239000002253 acid Substances 0.000 description 2
230000004888 barrier function Effects 0.000 description 2
230000015572 biosynthetic process Effects 0.000 description 2
239000003575 carbonaceous material Substances 0.000 description 2
229910052804 chromium Inorganic materials 0.000 description 2
239000011651 chromium Substances 0.000 description 2
GOECOOJIPSGIIV-UHFFFAOYSA-N copper iron nickel Chemical compound [Fe].[Ni].[Cu] GOECOOJIPSGIIV-UHFFFAOYSA-N 0.000 description 2
238000009792 diffusion process Methods 0.000 description 2
229910002804 graphite Inorganic materials 0.000 description 2
239000010439 graphite Substances 0.000 description 2
AMWRITDGCCNYAT-UHFFFAOYSA-L hydroxy(oxo)manganese;manganese Chemical compound [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 description 2
239000011810 insulating material Substances 0.000 description 2
UGKDIUIOSMUOAW-UHFFFAOYSA-N iron nickel Chemical compound [Fe].[Ni] UGKDIUIOSMUOAW-UHFFFAOYSA-N 0.000 description 2
VBMVTYDPPZVILR-UHFFFAOYSA-N iron(2+);oxygen(2-) Chemical class [O-2].[Fe+2] VBMVTYDPPZVILR-UHFFFAOYSA-N 0.000 description 2
229920002451 polyvinyl alcohol Polymers 0.000 description 2
230000009467 reduction Effects 0.000 description 2
239000002002 slurry Substances 0.000 description 2
125000006850 spacer group Chemical group 0.000 description 2
229910052723 transition metal Inorganic materials 0.000 description 2
150000003624 transition metals Chemical class 0.000 description 2
229910052684 Cerium Inorganic materials 0.000 description 1
229910001313 Cobalt-iron alloy Inorganic materials 0.000 description 1
229910000881 Cu alloy Inorganic materials 0.000 description 1
229910000570 Cupronickel Inorganic materials 0.000 description 1
DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
229910017709 Ni Co Inorganic materials 0.000 description 1
KGWWEXORQXHJJQ-UHFFFAOYSA-N [Fe].[Co].[Ni] Chemical compound [Fe].[Co].[Ni] KGWWEXORQXHJJQ-UHFFFAOYSA-N 0.000 description 1
238000005054 agglomeration Methods 0.000 description 1
230000002776 aggregation Effects 0.000 description 1
RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 description 1
239000003830 anthracite Substances 0.000 description 1
239000007864 aqueous solution Substances 0.000 description 1
239000011449 brick Substances 0.000 description 1
150000001721 carbon Chemical class 0.000 description 1
238000005524 ceramic coating Methods 0.000 description 1
GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 description 1
239000008199 coating composition Substances 0.000 description 1
230000001427 coherent effect Effects 0.000 description 1
238000007596 consolidation process Methods 0.000 description 1
230000008602 contraction Effects 0.000 description 1
YOCUPQPZWBBYIX-UHFFFAOYSA-N copper nickel Chemical compound [Ni].[Cu] YOCUPQPZWBBYIX-UHFFFAOYSA-N 0.000 description 1
229910000431 copper oxide Inorganic materials 0.000 description 1
238000007598 dipping method Methods 0.000 description 1
230000000694 effects Effects 0.000 description 1
238000005516 engineering process Methods 0.000 description 1
230000003628 erosive effect Effects 0.000 description 1
230000002349 favourable effect Effects 0.000 description 1
238000003682 fluorination reaction Methods 0.000 description 1
238000010438 heat treatment Methods 0.000 description 1
238000007654 immersion Methods 0.000 description 1
239000012535 impurity Substances 0.000 description 1
229910001026 inconel Inorganic materials 0.000 description 1
238000009413 insulation Methods 0.000 description 1
238000009830 intercalation Methods 0.000 description 1
230000002687 intercalation Effects 0.000 description 1
SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 1
239000011777 magnesium Substances 0.000 description 1
WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
239000011159 matrix material Substances 0.000 description 1
230000007246 mechanism Effects 0.000 description 1
229910001092 metal group alloy Inorganic materials 0.000 description 1
230000005012 migration Effects 0.000 description 1
238000013508 migration Methods 0.000 description 1
238000012986 modification Methods 0.000 description 1
230000004048 modification Effects 0.000 description 1
NQNBVCBUOCNRFZ-UHFFFAOYSA-N nickel ferrite Chemical compound [Ni]=O.O=[Fe]O[Fe]=O NQNBVCBUOCNRFZ-UHFFFAOYSA-N 0.000 description 1
229910000480 nickel oxide Inorganic materials 0.000 description 1
230000002093 peripheral effect Effects 0.000 description 1
230000035699 permeability Effects 0.000 description 1
230000008569 process Effects 0.000 description 1
230000000750 progressive effect Effects 0.000 description 1
239000011241 protective layer Substances 0.000 description 1
239000011819 refractory material Substances 0.000 description 1
230000002787 reinforcement Effects 0.000 description 1
229910052710 silicon Inorganic materials 0.000 description 1
239000010703 silicon Substances 0.000 description 1
238000005245 sintering Methods 0.000 description 1
229910052708 sodium Inorganic materials 0.000 description 1
239000011734 sodium Substances 0.000 description 1
239000007787 solid Substances 0.000 description 1
239000007921 spray Substances 0.000 description 1
239000010936 titanium Substances 0.000 description 1
238000003466 welding Methods 0.000 description 1
229910052727 yttrium Inorganic materials 0.000 description 1
VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 1
229910000859 α-Fe Inorganic materials 0.000 description 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
- C25C3/18—Electrolytes
- 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

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)
Battery Electrode And Active Subsutance (AREA)
Primary Cells (AREA)

CA2505285A 2003-02-20 2004-02-18 Aluminium electrowinning cells with metal-based anodes Expired - Fee Related CA2505285C (en)

Applications Claiming Priority (3)

Application Number	Priority Date	Filing Date	Title
IB0300662		2003-02-20
IBPCT/IB03/00662		2003-02-20
PCT/IB2004/000431 WO2004074549A2 (en)	2003-02-20	2004-02-18	Aluminium electrowinning cells with metal-based anodes

Publications (2)

Publication Number	Publication Date
CA2505285A1 CA2505285A1 (en)	2004-09-02
CA2505285C true CA2505285C (en)	2012-07-17

Family

ID=32894011

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA2505285A Expired - Fee Related CA2505285C (en)	2003-02-20	2004-02-18	Aluminium electrowinning cells with metal-based anodes

Country Status (5)

Country	Link
EP (1)	EP1608798A2 (de)
CA (1)	CA2505285C (de)
NO (1)	NO20054308L (de)
NZ (1)	NZ540408A (de)
WO (1)	WO2004074549A2 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO2007105125A2 (en) *	2006-03-10	2007-09-20	Moltech Invent S.A.	Aluminium electrowinning cell with enhanced crust
EP2324142B1 (de)	2008-09-08	2012-02-22	Rio Tinto Alcan International Limited	Bei hoher stromdichte arbeitende metallische sauerstoffentwickelnde anode für aluminiumreduktionszellen
CN105473766B (zh) *	2013-07-09	2018-02-02	俄铝工程技术中心有限责任公司	用于使用铝电解器获得熔体的电解质
CN104451779B (zh) *	2014-12-17	2017-01-18	湖南创元铝业有限公司	铝电解槽氟化铝控制方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US5006209A (en) *	1990-02-13	1991-04-09	Electrochemical Technology Corp.	Electrolytic reduction of alumina
US5725744A (en) *	1992-03-24	1998-03-10	Moltech Invent S.A.	Cell for the electrolysis of alumina at low temperatures
US6258247B1 (en) *	1998-02-11	2001-07-10	Northwest Aluminum Technology	Bath for electrolytic reduction of alumina and method therefor
NZ538777A (en) *	2002-10-18	2007-02-23	Moltech Invent S	Aluminium electrowinning cells with metal-based anodes having an oxide-based surface

2004
- 2004-02-18 WO PCT/IB2004/000431 patent/WO2004074549A2/en not_active Ceased
- 2004-02-18 EP EP04712114A patent/EP1608798A2/de not_active Withdrawn
- 2004-02-18 NZ NZ540408A patent/NZ540408A/en not_active IP Right Cessation
- 2004-02-18 CA CA2505285A patent/CA2505285C/en not_active Expired - Fee Related
2005
- 2005-09-19 NO NO20054308A patent/NO20054308L/no not_active Application Discontinuation

Also Published As

Publication number	Publication date
EP1608798A2 (de)	2005-12-28
NO20054308L (no)	2005-09-19
NZ540408A (en)	2007-04-27
WO2004074549A3 (en)	2005-05-12
WO2004074549A2 (en)	2004-09-02
CA2505285A1 (en)	2004-09-02
AU2004213650A1 (en)	2004-09-02

Legal Events

Date	Code	Title	Description
2009-02-17	EEER	Examination request
2017-04-04	MKLA	Lapsed	Effective date: 20170220

Publication	Publication Date	Title
CA2498622C (en)	2011-09-20	Aluminium electrowinning cells with metal-based anodes
US6372099B1 (en)	2002-04-16	Cells for the electrowinning of aluminium having dimensionally stable metal-based anodes
EP1490534B1 (de)	2005-09-07	Verhinderung der auflösung von metallischen anoden der aluminiumproduktion
NZ540408A (en)	2007-04-27	Aluminium electrowinning cells with metal-based anodes and a fluoride-containing molten electrolyte
EP1392891B1 (de)	2004-10-06	Elektrolysezellen zur aluminiumgewinnung mit drainiertem kathodenboden und einem reservoir für aluminium
AU2004213650B2 (en)	2010-02-11	Aluminium electrowinning cells with metal-based anodes
WO2000006805A1 (en)	2000-02-10	Slow consumable non-carbon metal-based anodes for aluminium production cells
EP1366216B1 (de)	2004-08-04	Zelle zur elektrogewinnung von aluminium operierend mit auf metall basierenden anoden
US6913682B2 (en)	2005-07-05	Cells for the electrowinning of aluminium having dimensionally stable metal-based anodes
US20040216995A1 (en)	2004-11-04	Nickel-iron anodes for aluminium electrowinning cells
CA2455783A1 (en)	2003-02-20	Aluminium production cells with iron-based metal alloy anodes
EP1392892B1 (de)	2005-01-19	Aluminium-elektrolysezelle mit drainierfähigem kathodenboden und aluminium-sammelbehälter
AU2002236145B2 (en)	2007-04-19	Cell for the electrowinning of aluminium operating with metal-based anodes
AU2002256854A1 (en)	2002-12-09	Aluminium electrowinning cells having a drained cathode bottom and an aluminium collection reservoir
AU2002302918A1 (en)	2002-12-09	Aluminium electrowinning cells having a drained cathode bottom and an aluminium collection reservoir
AU2002236145A1 (en)	2003-03-13	Cell for the electrowinning of aluminium operating with metal-based anodes