EP3075886B1 - Procédé de production d'aluminium électrolytique à l'aide de cryolite de potassium comme système complémentaire - Google Patents
Procédé de production d'aluminium électrolytique à l'aide de cryolite de potassium comme système complémentaire Download PDFInfo
- Publication number
- EP3075886B1 EP3075886B1 EP15248006.7A EP15248006A EP3075886B1 EP 3075886 B1 EP3075886 B1 EP 3075886B1 EP 15248006 A EP15248006 A EP 15248006A EP 3075886 B1 EP3075886 B1 EP 3075886B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- alf
- potassium
- cryolite
- electrolysis
- aluminum
- 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.)
- Active
Links
- 229910001610 cryolite Inorganic materials 0.000 title claims description 91
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 title claims description 90
- 239000011591 potassium Substances 0.000 title claims description 89
- 229910052700 potassium Inorganic materials 0.000 title claims description 89
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims description 49
- 229910052782 aluminium Inorganic materials 0.000 title claims description 49
- 239000000654 additive Substances 0.000 title description 27
- 230000000996 additive effect Effects 0.000 title description 17
- 238000004519 manufacturing process Methods 0.000 title description 14
- 239000004411 aluminium Substances 0.000 title 1
- 238000005868 electrolysis reaction Methods 0.000 claims description 81
- 239000011734 sodium Substances 0.000 claims description 57
- 239000003792 electrolyte Substances 0.000 claims description 41
- KLZUFWVZNOTSEM-UHFFFAOYSA-K Aluminium flouride Chemical compound F[Al](F)F KLZUFWVZNOTSEM-UHFFFAOYSA-K 0.000 claims description 31
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 18
- 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 claims description 16
- 229910052708 sodium Inorganic materials 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 13
- 230000008569 process Effects 0.000 claims description 7
- 239000013589 supplement Substances 0.000 claims description 6
- 229910052593 corundum Inorganic materials 0.000 claims description 5
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 5
- 238000012544 monitoring process Methods 0.000 claims description 4
- 230000000153 supplemental effect Effects 0.000 claims 1
- 229910016569 AlF 3 Inorganic materials 0.000 description 64
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 21
- 230000000052 comparative effect Effects 0.000 description 13
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 10
- PQXKHYXIUOZZFA-UHFFFAOYSA-M lithium fluoride Chemical compound [Li+].[F-] PQXKHYXIUOZZFA-UHFFFAOYSA-M 0.000 description 10
- 239000007788 liquid Substances 0.000 description 8
- 238000002844 melting Methods 0.000 description 8
- 230000008018 melting Effects 0.000 description 8
- -1 lithium hexafluorophosphate Chemical compound 0.000 description 7
- XAEFZNCEHLXOMS-UHFFFAOYSA-M potassium benzoate Chemical compound [K+].[O-]C(=O)C1=CC=CC=C1 XAEFZNCEHLXOMS-UHFFFAOYSA-M 0.000 description 7
- IRPGOXJVTQTAAN-UHFFFAOYSA-N 2,2,3,3,3-pentafluoropropanal Chemical compound FC(F)(F)C(F)(F)C=O IRPGOXJVTQTAAN-UHFFFAOYSA-N 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 239000002000 Electrolyte additive Substances 0.000 description 5
- 229910052786 argon Inorganic materials 0.000 description 5
- 238000004090 dissolution Methods 0.000 description 5
- 150000004673 fluoride salts Chemical class 0.000 description 5
- 150000003839 salts Chemical class 0.000 description 5
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 3
- 229910004261 CaF 2 Inorganic materials 0.000 description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 3
- 229910052796 boron Inorganic materials 0.000 description 3
- 239000003575 carbonaceous material Substances 0.000 description 3
- 230000002354 daily effect Effects 0.000 description 3
- RXCBCUJUGULOGC-UHFFFAOYSA-H dipotassium;tetrafluorotitanium;difluoride Chemical compound [F-].[F-].[F-].[F-].[F-].[F-].[K+].[K+].[Ti+4] RXCBCUJUGULOGC-UHFFFAOYSA-H 0.000 description 3
- 230000003203 everyday effect Effects 0.000 description 3
- 230000000284 resting effect Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- 238000009626 Hall-Héroult process Methods 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000010406 cathode material Substances 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- BJZIJOLEWHWTJO-UHFFFAOYSA-H dipotassium;hexafluorozirconium(2-) Chemical compound [F-].[F-].[F-].[F-].[F-].[F-].[K+].[K+].[Zr+4] BJZIJOLEWHWTJO-UHFFFAOYSA-H 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- ORUIBWPALBXDOA-UHFFFAOYSA-L magnesium fluoride Chemical compound [F-].[F-].[Mg+2] ORUIBWPALBXDOA-UHFFFAOYSA-L 0.000 description 2
- 229910001635 magnesium fluoride Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 239000000376 reactant Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- 238000001308 synthesis method Methods 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 150000004645 aluminates Chemical class 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 239000010405 anode material Substances 0.000 description 1
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 1
- 229910001634 calcium fluoride Inorganic materials 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- C25C3/20—Automatic control or regulation of cells
Claims (3)
- Processus de fabrication d'aluminium électrolytique avec de la cryolite de potassium, comme un système supplémentaire, comprenant les étapes suivantes :Étape A : démarrer l'électrolyse dans un réservoir électrolytique à l'aide d'un système Na3AlF6-Al2O3 ou d'un système de mélange de cryolite de sodium Na3AlF6, de cryolite de potassium mKF • AlF3 et d'Al2O3, effectuer l'électrolyse en continu et ajouter du Na3AlF6-AlF3 jusqu'à ce qu'un four fonctionne régulièrement ; etÉtape B : ajouter un système d'électrolyte supplémentaire comprenant la cryolithe de potassium mKF • AlF3, AlF3 et Na3AlF6 et surveiller le pourcentage en masse de l'élément de potassium dans l'électrolyte dans la cuve d'électrolyse de manière à ce que le pourcentage en masse de l'élément de potassium soit dans la plage de 5 % à 10 % ;dans lequel m dans la cryolite de potassium mKF • AlF3 va de 1,0 à 3,0.
- Procédé selon la revendication 1, dans lequel à l'étape A, pendant le démarrage de l'électrolyse dans la cuve d'électrolyse à l'aide du système de mélange de cryolite de sodium Na3AlF6, de cryolite de potassium mKF • AlF3 et d'Al2O3, le rapport de masse de la cryolite de sodium Na3AlF6 et de la cryolite de potassium mKF • AlF3 va de 1,5 à 5.
- Procédé selon la revendication 1 ou 2, dans lequel m va de 1,0 à 1,5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP15248006.7A EP3075886B1 (fr) | 2015-04-02 | 2015-04-02 | Procédé de production d'aluminium électrolytique à l'aide de cryolite de potassium comme système complémentaire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP15248006.7A EP3075886B1 (fr) | 2015-04-02 | 2015-04-02 | Procédé de production d'aluminium électrolytique à l'aide de cryolite de potassium comme système complémentaire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3075886A1 EP3075886A1 (fr) | 2016-10-05 |
| EP3075886B1 true EP3075886B1 (fr) | 2019-02-27 |
Family
ID=52824176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP15248006.7A Active EP3075886B1 (fr) | 2015-04-02 | 2015-04-02 | Procédé de production d'aluminium électrolytique à l'aide de cryolite de potassium comme système complémentaire |
Country Status (1)
| Country | Link |
|---|---|
| EP (1) | EP3075886B1 (fr) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106191927B (zh) * | 2016-09-30 | 2017-11-24 | 河南科技大学 | 一种铝电解用低温熔盐体系及其使用方法 |
| CN109949873B (zh) * | 2019-03-29 | 2023-03-31 | 中南大学 | 铝电解全流程氟物质流计算方法 |
| CN110424027B (zh) * | 2019-08-28 | 2021-07-13 | 云南云铝润鑫铝业有限公司 | 一种降低铝电解生产过程氟化铝消耗的控制方法 |
| CN115849419B (zh) * | 2022-11-22 | 2024-03-29 | 贵州大学 | 一种载氟氧化铝的生产方法及生产的载氟氧化铝的应用 |
| CN116835971B (zh) * | 2023-07-12 | 2024-02-27 | 华东师范大学 | 利用锰废渣和锌废渣制备高饱和磁感应强度锰锌铁氧体材料的方法 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2915442A (en) * | 1955-11-28 | 1959-12-01 | Kaiser Aluminium Chem Corp | Production of aluminum |
| US6258247B1 (en) * | 1998-02-11 | 2001-07-10 | Northwest Aluminum Technology | Bath for electrolytic reduction of alumina and method therefor |
| CN101709487A (zh) * | 2009-12-18 | 2010-05-19 | 中国铝业股份有限公司 | 一种铝电解的电解质 |
| WO2012159590A1 (fr) * | 2012-05-23 | 2012-11-29 | 深圳市新星轻合金材料股份有限公司 | Système de complément d'électrolyte utilisé lors de l'opération d'électrolyse de l'aluminium et son procédé de fabrication |
-
2015
- 2015-04-02 EP EP15248006.7A patent/EP3075886B1/fr active Active
Non-Patent Citations (1)
| Title |
|---|
| None * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3075886A1 (fr) | 2016-10-05 |
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