DE3830769C2 - - Google Patents
Info
- Publication number
- DE3830769C2 DE3830769C2 DE3830769A DE3830769A DE3830769C2 DE 3830769 C2 DE3830769 C2 DE 3830769C2 DE 3830769 A DE3830769 A DE 3830769A DE 3830769 A DE3830769 A DE 3830769A DE 3830769 C2 DE3830769 C2 DE 3830769C2
- Authority
- DE
- Germany
- Prior art keywords
- fluorine
- aluminum oxide
- value
- electrolysis
- storage device
- 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
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 30
- 229910052731 fluorine Inorganic materials 0.000 claims description 30
- 239000011737 fluorine Substances 0.000 claims description 30
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 28
- 238000000034 method Methods 0.000 claims description 19
- 238000005868 electrolysis reaction Methods 0.000 claims description 17
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 15
- 239000007789 gas Substances 0.000 claims description 13
- 239000003792 electrolyte Substances 0.000 claims description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 7
- 229910052782 aluminium Inorganic materials 0.000 claims description 7
- 229910052593 corundum Inorganic materials 0.000 claims description 6
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 6
- 238000003860 storage Methods 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 238000004064 recycling Methods 0.000 claims description 2
- 238000004140 cleaning Methods 0.000 claims 3
- 239000000155 melt Substances 0.000 claims 1
- 239000002912 waste gas Substances 0.000 claims 1
- KLZUFWVZNOTSEM-UHFFFAOYSA-K Aluminium flouride Chemical compound F[Al](F)F KLZUFWVZNOTSEM-UHFFFAOYSA-K 0.000 description 17
- 229910001610 cryolite Inorganic materials 0.000 description 5
- 238000007792 addition Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- 239000000654 additive Substances 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 229910016569 AlF 3 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
- 241001676573 Minium Species 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005243 fluidization Methods 0.000 description 1
- 238000003682 fluorination reaction Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000010795 gaseous waste Substances 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000000126 substance Substances 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
- C25C3/20—Automatic control or regulation of cells
-
- 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
- C25C3/22—Collecting emitted gases
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)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8713543A FR2620738B1 (fr) | 1987-09-18 | 1987-09-18 | Procede de regulation de l'acidite du bain d'electrolyse par recyclage des produits fluores emis par les cuves d'electrolyse hall-heroult |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE3830769A1 DE3830769A1 (de) | 1989-04-06 |
| DE3830769C2 true DE3830769C2 (https=) | 1990-01-18 |
Family
ID=9355397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE3830769A Granted DE3830769A1 (de) | 1987-09-18 | 1988-09-09 | Verfahren zur regulierung der aziditaet des elektrolysebades durch rueckfuehrung der von den hall-heroult-elektrolysewannen abgefuehrten fluorhaltigen stoffe |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US4867851A (https=) |
| AU (1) | AU605448B2 (https=) |
| BR (1) | BR8804796A (https=) |
| CA (1) | CA1329789C (https=) |
| DE (1) | DE3830769A1 (https=) |
| FR (1) | FR2620738B1 (https=) |
| NO (1) | NO173026B (https=) |
| NZ (1) | NZ226108A (https=) |
| SA (1) | SA89100034B1 (https=) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE59105830D1 (de) * | 1990-05-04 | 1995-08-03 | Alusuisse Lonza Services Ag | Regulierung und Stabilisierung des A1F3-Gehaltes in einer Aluminiumelektrolysezelle. |
| US5942097A (en) * | 1997-12-05 | 1999-08-24 | The Ohio State University | Method and apparatus featuring a non-consumable anode for the electrowinning of aluminum |
| DE19805619C2 (de) * | 1998-02-12 | 2002-08-01 | Heraeus Electro Nite Int | Verfahren zur Regelung des AlF¶3¶-Gehaltes in Kryolithschmelzen |
| US6837982B2 (en) * | 2002-01-25 | 2005-01-04 | Northwest Aluminum Technologies | Maintaining molten salt electrolyte concentration in aluminum-producing electrolytic cell |
| US7255783B2 (en) * | 2003-08-21 | 2007-08-14 | Alcoa Inc. | Use of infrared imaging to reduce energy consumption and fluoride consumption |
| US12509788B2 (en) | 2019-03-20 | 2025-12-30 | Elysis Limited Partnership | System and method for collecting and pre-treating process gases generated by an electrolysis cell |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE628401A (https=) * | 1962-02-15 | |||
| US3760565A (en) * | 1971-07-19 | 1973-09-25 | Aluminum Co Of America | Anti-pollution method |
| SE362901B (https=) * | 1971-10-27 | 1973-12-27 | Svenska Flaektfabriken Ab | |
| US3823078A (en) * | 1972-12-14 | 1974-07-09 | Reynolds Int Inc | Production of fluidized alumina reduction cell feed |
| US4053375A (en) * | 1976-07-16 | 1977-10-11 | Dorr-Oliver Incorporated | Process for recovery of alumina-cryolite waste in aluminum production |
| US4062696A (en) * | 1976-07-27 | 1977-12-13 | Kaiser Aluminum & Chemical Corporation | Purification of contaminated alumina scavengers of aluminum reduction cell effluent dry scrubber systems |
| GB1571222A (en) * | 1977-03-10 | 1980-07-09 | Ardal Og Sunndal Verk | Process and apparatus for treatment of waste gases |
| GB2029860B (en) * | 1978-09-07 | 1983-03-09 | Alcan Res & Dev | Measurement of metal fluoride contents of electrolyte in electrolytic reduction cells for alluminium production |
| EP0195142B1 (en) * | 1985-03-18 | 1988-09-07 | Alcan International Limited | Controlling alf 3 addition to al reduction cell electrolyte |
-
1987
- 1987-09-18 FR FR8713543A patent/FR2620738B1/fr not_active Expired
-
1988
- 1988-09-09 NZ NZ226108A patent/NZ226108A/en unknown
- 1988-09-09 DE DE3830769A patent/DE3830769A1/de active Granted
- 1988-09-12 CA CA000577158A patent/CA1329789C/fr not_active Expired - Fee Related
- 1988-09-13 NO NO884061A patent/NO173026B/no not_active IP Right Cessation
- 1988-09-14 US US07/244,147 patent/US4867851A/en not_active Expired - Lifetime
- 1988-09-16 BR BR8804796A patent/BR8804796A/pt not_active IP Right Cessation
- 1988-09-16 AU AU22359/88A patent/AU605448B2/en not_active Expired
-
1989
- 1989-11-04 SA SA89100034A patent/SA89100034B1/ar unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FR2620738B1 (fr) | 1989-11-24 |
| AU605448B2 (en) | 1991-01-10 |
| BR8804796A (pt) | 1989-04-25 |
| NZ226108A (en) | 1991-04-26 |
| SA89100034B1 (ar) | 1999-06-07 |
| FR2620738A1 (fr) | 1989-03-24 |
| AU2235988A (en) | 1989-03-23 |
| NO173026B (no) | 1993-07-05 |
| DE3830769A1 (de) | 1989-04-06 |
| NO884061L (no) | 1989-03-20 |
| CA1329789C (fr) | 1994-05-24 |
| NO884061D0 (no) | 1988-09-13 |
| US4867851A (en) | 1989-09-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OP8 | Request for examination as to paragraph 44 patent law | ||
| D2 | Grant after examination | ||
| 8364 | No opposition during term of opposition |