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FR2620738B1 - Procede de regulation de l'acidite du bain d'electrolyse par recyclage des produits fluores emis par les cuves d'electrolyse hall-heroult - Google Patents

Procede de regulation de l'acidite du bain d'electrolyse par recyclage des produits fluores emis par les cuves d'electrolyse hall-heroult

Info

Publication number
FR2620738B1
FR2620738B1 FR8713543A FR8713543A FR2620738B1 FR 2620738 B1 FR2620738 B1 FR 2620738B1 FR 8713543 A FR8713543 A FR 8713543A FR 8713543 A FR8713543 A FR 8713543A FR 2620738 B1 FR2620738 B1 FR 2620738B1
Authority
FR
France
Prior art keywords
electrolysis
acidity
hall
recycling
regulating
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
Application number
FR8713543A
Other languages
English (en)
Other versions
FR2620738A1 (fr
Inventor
Jean-Luc Basquin
Benoit Sulmont
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 France SAS
Original Assignee
Aluminium Pechiney SA
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=9355397&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=FR2620738(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Aluminium Pechiney SA filed Critical Aluminium Pechiney SA
Priority to FR8713543A priority Critical patent/FR2620738B1/fr
Priority to NZ226108A priority patent/NZ226108A/en
Priority to DE3830769A priority patent/DE3830769A1/de
Priority to CA000577158A priority patent/CA1329789C/fr
Priority to NO884061A priority patent/NO173026B/no
Priority to US07/244,147 priority patent/US4867851A/en
Priority to BR8804796A priority patent/BR8804796A/pt
Priority to AU22359/88A priority patent/AU605448B2/en
Publication of FR2620738A1 publication Critical patent/FR2620738A1/fr
Priority to SA89100034A priority patent/SA89100034B1/ar
Publication of FR2620738B1 publication Critical patent/FR2620738B1/fr
Application granted granted Critical
Expired legal-status Critical Current

Links

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)
FR8713543A 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 Expired FR2620738B1 (fr)

Priority Applications (9)

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
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
DE3830769A 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
CA000577158A CA1329789C (fr) 1987-09-18 1988-09-12 Procede de regulation de l'acidite du bain d'electrolyse par recyclage des produits emis par les cuves hall-heroult
NO884061A NO173026B (no) 1987-09-18 1988-09-13 Fremgangsmaate for regulering av surhetsgraden i et elektrolysebad
US07/244,147 US4867851A (en) 1987-09-18 1988-09-14 Process for regulating the acidity of all-Heelectrolytic cells
BR8804796A BR8804796A (pt) 1987-09-18 1988-09-16 Processo de regulacao da acidez do banho de eletrolise por reciclagem dos efluentes fluorados emitidos pelas cubas de eletrolise hall-heroult
AU22359/88A AU605448B2 (en) 1987-09-18 1988-09-16 Process for regulating the acidity of hall-heroult electrolytic cells
SA89100034A SA89100034B1 (ar) 1987-09-18 1989-11-04 عملية لتنظيم حموضة حمّام الكتروليتي بواسطة إعادة دورة المواد المتدفقة المفلورة المنبعثة من خلايا هال – هرولت الالكتروليتية.

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
FR2620738A1 FR2620738A1 (fr) 1989-03-24
FR2620738B1 true FR2620738B1 (fr) 1989-11-24

Family

ID=9355397

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8713543A Expired 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

Country Status (9)

Country Link
US (1) US4867851A (fr)
AU (1) AU605448B2 (fr)
BR (1) BR8804796A (fr)
CA (1) CA1329789C (fr)
DE (1) DE3830769A1 (fr)
FR (1) FR2620738B1 (fr)
NO (1) NO173026B (fr)
NZ (1) NZ226108A (fr)
SA (1) SA89100034B1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
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
CN113614289B (zh) * 2019-03-20 2025-04-01 艾莱西丝有限合伙企业 用于收集和预处理电解池产生的工艺气体的系统和方法

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL288960A (fr) * 1962-02-15
US3760565A (en) * 1971-07-19 1973-09-25 Aluminum Co Of America Anti-pollution method
SE362901B (fr) * 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

Also Published As

Publication number Publication date
NO884061L (no) 1989-03-20
CA1329789C (fr) 1994-05-24
SA89100034B1 (ar) 1999-06-07
US4867851A (en) 1989-09-19
AU605448B2 (en) 1991-01-10
DE3830769A1 (de) 1989-04-06
AU2235988A (en) 1989-03-23
FR2620738A1 (fr) 1989-03-24
BR8804796A (pt) 1989-04-25
NO884061D0 (no) 1988-09-13
NO173026B (no) 1993-07-05
NZ226108A (en) 1991-04-26
DE3830769C2 (fr) 1990-01-18

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