NZ226108A - Process for regulating the acidity of an alumina-cryolite electrolyte cell in which fluorinated products emitted by hall-heroult electrolytic cells are recycled - Google Patents
Process for regulating the acidity of an alumina-cryolite electrolyte cell in which fluorinated products emitted by hall-heroult electrolytic cells are recycledInfo
- Publication number
- NZ226108A NZ226108A NZ226108A NZ22610888A NZ226108A NZ 226108 A NZ226108 A NZ 226108A NZ 226108 A NZ226108 A NZ 226108A NZ 22610888 A NZ22610888 A NZ 22610888A NZ 226108 A NZ226108 A NZ 226108A
- Authority
- NZ
- New Zealand
- Prior art keywords
- alumina
- cells
- fluorinated
- acidity
- reference value
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 20
- 239000003792 electrolyte Substances 0.000 title claims description 8
- 230000001105 regulatory effect Effects 0.000 title claims description 7
- 229910001610 cryolite Inorganic materials 0.000 title description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 47
- 229910052731 fluorine Inorganic materials 0.000 claims description 19
- 239000011737 fluorine Substances 0.000 claims description 19
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 18
- KLZUFWVZNOTSEM-UHFFFAOYSA-K Aluminium flouride Chemical compound F[Al](F)F KLZUFWVZNOTSEM-UHFFFAOYSA-K 0.000 claims description 17
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 9
- 229910052782 aluminium Inorganic materials 0.000 claims description 9
- 239000004411 aluminium Substances 0.000 claims description 9
- 238000003860 storage Methods 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000004064 recycling Methods 0.000 claims description 5
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 238000007792 addition Methods 0.000 description 6
- 101100004392 Arabidopsis thaliana BHLH147 gene Proteins 0.000 description 4
- 239000007789 gas Substances 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000005868 electrolysis reaction Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000009626 Hall-Héroult process Methods 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
- 239000002253 acid Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000006115 defluorination reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002848 electrochemical method Methods 0.000 description 1
- 238000005243 fluidization Methods 0.000 description 1
- 150000002221 fluorine Chemical class 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 238000012432 intermediate storage Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- HJHVQCXHVMGZNC-JCJNLNMISA-M sodium;(2z)-2-[(3r,4s,5s,8s,9s,10s,11r,13r,14s,16s)-16-acetyloxy-3,11-dihydroxy-4,8,10,14-tetramethyl-2,3,4,5,6,7,9,11,12,13,15,16-dodecahydro-1h-cyclopenta[a]phenanthren-17-ylidene]-6-methylhept-5-enoate Chemical compound [Na+].O[C@@H]([C@@H]12)C[C@H]3\C(=C(/CCC=C(C)C)C([O-])=O)[C@@H](OC(C)=O)C[C@]3(C)[C@@]2(C)CC[C@@H]2[C@]1(C)CC[C@@H](O)[C@H]2C HJHVQCXHVMGZNC-JCJNLNMISA-M 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 (1)
| Publication Number | Publication Date |
|---|---|
| NZ226108A true NZ226108A (en) | 1991-04-26 |
Family
ID=9355397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NZ226108A NZ226108A (en) | 1987-09-18 | 1988-09-09 | Process for regulating the acidity of an alumina-cryolite electrolyte cell in which fluorinated products emitted by hall-heroult electrolytic cells are recycled |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US4867851A (enExample) |
| AU (1) | AU605448B2 (enExample) |
| BR (1) | BR8804796A (enExample) |
| CA (1) | CA1329789C (enExample) |
| DE (1) | DE3830769A1 (enExample) |
| FR (1) | FR2620738B1 (enExample) |
| NO (1) | NO173026B (enExample) |
| NZ (1) | NZ226108A (enExample) |
| SA (1) | SA89100034B1 (enExample) |
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 |
| BR112021018373A2 (pt) * | 2019-03-20 | 2021-11-23 | Elysis Lp | Sistema e método para coletar e pré-tratar gases de processo gerados por uma célula de eletrólise |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL288960A (enExample) * | 1962-02-15 | |||
| US3760565A (en) * | 1971-07-19 | 1973-09-25 | Aluminum Co Of America | Anti-pollution method |
| SE362901B (enExample) * | 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 |
| DE3564825D1 (en) * | 1985-03-18 | 1988-10-13 | Alcan Int Ltd | 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 AU AU22359/88A patent/AU605448B2/en not_active Expired
- 1988-09-16 BR BR8804796A patent/BR8804796A/pt not_active IP Right Cessation
-
1989
- 1989-11-04 SA SA89100034A patent/SA89100034B1/ar unknown
Also Published As
| Publication number | Publication date |
|---|---|
| US4867851A (en) | 1989-09-19 |
| FR2620738A1 (fr) | 1989-03-24 |
| BR8804796A (pt) | 1989-04-25 |
| AU605448B2 (en) | 1991-01-10 |
| NO173026B (no) | 1993-07-05 |
| DE3830769A1 (de) | 1989-04-06 |
| SA89100034B1 (ar) | 1999-06-07 |
| NO884061L (no) | 1989-03-20 |
| FR2620738B1 (fr) | 1989-11-24 |
| AU2235988A (en) | 1989-03-23 |
| CA1329789C (fr) | 1994-05-24 |
| NO884061D0 (no) | 1988-09-13 |
| DE3830769C2 (enExample) | 1990-01-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| RENW | Renewal (renewal fees accepted) |