BR0207647A - Processo de regulação de uma célula de eletrólise - Google Patents

Processo de regulação de uma célula de eletrólise

Info

Publication number
BR0207647A
BR0207647A BR0207647-0A BR0207647A BR0207647A BR 0207647 A BR0207647 A BR 0207647A BR 0207647 A BR0207647 A BR 0207647A BR 0207647 A BR0207647 A BR 0207647A
Authority
BR
Brazil
Prior art keywords
aif
electrolysis cell
cell
bath
qint
Prior art date
Application number
BR0207647-0A
Other languages
English (en)
Other versions
BR0207647B1 (pt
Inventor
Olivier Bonnardel
Claude Vanvoren
Original Assignee
Pechiney Aluminium
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
Application filed by Pechiney Aluminium filed Critical Pechiney Aluminium
Publication of BR0207647A publication Critical patent/BR0207647A/pt
Publication of BR0207647B1 publication Critical patent/BR0207647B1/pt

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

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)

Abstract

"PROCESSO DE REGULAçãO DE UMA CéLULA DE ELETRóLISE". A presente invenção refere-se a um processo de regulação de uma célula de eletrólise para a produção de alumínio por redução de alumina dissolvida em um banho de criolita fundida, e compreende a adição, no banho de eletrólito, durante intervalos de tempo p predeterminados chamados de "períodos", de uma quantidade determinada Q(p) de trifluoreto de alumínio (AIF~ 3~) determinada pela seguinte relação: Q(p) = Qint(p) - Qc1 (p) + Qt(p), na qual Qint(p) é um termo integral ("auto-adaptativo") que representa as necessidades reais totais da célula em AIF~ 3~ e que é calculado a partir de uma média Qm(p) dos aportes reais em AIF~ 3~ efetuados durante os N últimos períodos, Qc1 é um termo corretivo que corresponde à quantidade dita equivalente de AIF~ 3~ contida na alumina adicionada à célula durante o período p, e Qt(p) é um termo corretivo que é uma função tipicamente crescente da diferença entre a temperatura do banho medida T(p) e uma temperatura nominal. O processo de acordo com a invenção permite regular eficazmente a acidez de uma célula de eletrólise a intensidades que podem atingir 500 kA com um banho de eletrólito que tem um teor em AIF~ 3~ superior a 11 %.
BRPI0207647-0A 2001-02-28 2002-02-27 processo de regulação de uma célula de eletrólise. BR0207647B1 (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0102722A FR2821363B1 (fr) 2001-02-28 2001-02-28 Procede de regulation d'une cellule d'electrolyse
PCT/FR2002/000705 WO2002068726A2 (fr) 2001-02-28 2002-02-27 Procede de regulation d'une cellule d'electrolyse

Publications (2)

Publication Number Publication Date
BR0207647A true BR0207647A (pt) 2004-06-01
BR0207647B1 BR0207647B1 (pt) 2011-05-17

Family

ID=8860543

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0207647-0A BR0207647B1 (pt) 2001-02-28 2002-02-27 processo de regulação de uma célula de eletrólise.

Country Status (15)

Country Link
US (1) US7135104B2 (pt)
CN (2) CN1292096C (pt)
AR (1) AR032903A1 (pt)
AU (1) AU2002242786B2 (pt)
BR (1) BR0207647B1 (pt)
CA (1) CA2439324C (pt)
FR (1) FR2821363B1 (pt)
GC (1) GC0000387A (pt)
IS (1) IS6926A (pt)
MY (1) MY131822A (pt)
NO (1) NO20033819L (pt)
NZ (1) NZ527235A (pt)
RU (1) RU2280717C2 (pt)
WO (1) WO2002068726A2 (pt)
ZA (1) ZA200305802B (pt)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107290479B (zh) * 2016-03-31 2020-08-21 中核新能核工业工程有限责任公司 一种10kA中温电解槽中HF酸度检测数学模型的建立方法
EP3266904B1 (de) 2016-07-05 2021-03-24 TRIMET Aluminium SE Schmelzflusselektrolyseanlage und regelungsverfahren zu deren betrieb
RU2730828C1 (ru) * 2020-02-04 2020-08-26 Общество с ограниченной ответственностью "Объединенная Компания РУСАЛ Инженерно-технологический центр" Способ управления технологическим процессом в алюминиевом электролизере
AU2021287240A1 (en) * 2020-06-09 2023-01-19 Alcoa Usa Corp. Methods of producing aluminum fluoride from cryolite bath

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US468350A (en) * 1892-02-09 Grinder
JPS579093A (en) * 1980-06-17 1982-01-18 Matsushita Electric Ind Co Ltd Induction heating cooking device
DE3564825D1 (en) * 1985-03-18 1988-10-13 Alcan Int Ltd Controlling alf 3 addition to al reduction cell electrolyte
EP0455590B1 (de) * 1990-05-04 1995-06-28 Alusuisse-Lonza Services Ag Regulierung und Stabilisierung des A1F3-Gehaltes in einer Aluminiumelektrolysezelle
US5183620A (en) * 1990-08-01 1993-02-02 E. I. Du Pont De Nemours And Company Process of drawing yarn using an oscillating draw assist element
FR2753727B1 (fr) * 1996-09-25 1998-10-23 Procede de regulation de la temperature du bain d'une cuve d'electrolyse pour la production d'aluminium
RU2106435C1 (ru) 1996-11-06 1998-03-10 Акционерное общество открытого типа "Всероссийский алюминиево-магниевый институт" Способ управления алюминиевым электролизером
DE19805619C2 (de) 1998-02-12 2002-08-01 Heraeus Electro Nite Int Verfahren zur Regelung des AlF¶3¶-Gehaltes in Kryolithschmelzen

Also Published As

Publication number Publication date
CA2439324C (fr) 2011-07-05
WO2002068726A3 (fr) 2004-02-19
MY131822A (en) 2007-09-28
FR2821363A1 (fr) 2002-08-30
RU2280717C2 (ru) 2006-07-27
ZA200305802B (en) 2004-07-09
AR032903A1 (es) 2003-12-03
GC0000387A (en) 2007-03-31
IS6926A (is) 2003-08-26
US20040168931A1 (en) 2004-09-02
AU2002242786B2 (en) 2006-10-05
US7135104B2 (en) 2006-11-14
CN1840743A (zh) 2006-10-04
CN1292096C (zh) 2006-12-27
NO20033819D0 (no) 2003-08-27
NO20033819L (no) 2003-10-28
NZ527235A (en) 2005-05-27
BR0207647B1 (pt) 2011-05-17
CN1531607A (zh) 2004-09-22
RU2003128970A (ru) 2005-03-10
FR2821363B1 (fr) 2003-04-25
CA2439324A1 (fr) 2002-09-06
WO2002068726A2 (fr) 2002-09-06

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Legal Events

Date Code Title Description
B09A Decision: intention to grant [chapter 9.1 patent gazette]
B16A Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]

Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 27/02/2002, OBSERVADAS AS CONDICOES LEGAIS.

B21F Lapse acc. art. 78, item iv - on non-payment of the annual fees in time

Free format text: REFERENTE A 15A ANUIDADE.

B24J Lapse because of non-payment of annual fees (definitively: art 78 iv lpi, resolution 113/2013 art. 12)