WO2005045101A3 - Process for electrolytic production of aluminum - Google Patents

Process for electrolytic production of aluminum Download PDF

Info

Publication number
WO2005045101A3
WO2005045101A3 PCT/US2004/037180 US2004037180W WO2005045101A3 WO 2005045101 A3 WO2005045101 A3 WO 2005045101A3 US 2004037180 W US2004037180 W US 2004037180W WO 2005045101 A3 WO2005045101 A3 WO 2005045101A3
Authority
WO
WIPO (PCT)
Prior art keywords
alumina
electrolyte
new
aluminum
anodes
Prior art date
Application number
PCT/US2004/037180
Other languages
French (fr)
Other versions
WO2005045101A2 (en
Inventor
R Davis Boyd
Jianhong Yang
Alain Roy
John Hryn
Original Assignee
Univ Chicago
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 Univ Chicago filed Critical Univ Chicago
Priority to CA002544702A priority Critical patent/CA2544702A1/en
Priority to AU2004288233A priority patent/AU2004288233A1/en
Priority to BRPI0416235-8A priority patent/BRPI0416235A/en
Priority to EP04816943A priority patent/EP1689913A2/en
Publication of WO2005045101A2 publication Critical patent/WO2005045101A2/en
Priority to NO20062501A priority patent/NO20062501L/en
Publication of WO2005045101A3 publication Critical patent/WO2005045101A3/en

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
    • 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

Abstract

A new method for the electrolytic production of aluminum, using a new electrolyte composition and low temperature operation, is provided. The electrolyte comprises a mixture of aluminum fluoride-potassium fluoride with from about 2 wt. % to 6 wt. % of alumina. The new electrolyte allows for the electrolytical reduction of alumina at temperatures as low as 700°C. The lower temperature allows for the use of inert anodes, and is conducive to the use of wetted cathodes. The new electrolyte mixture has a higher solubility for alumina and remains entirely liquid, even with 5 wt. % of alumina present in the electrolyte during electrolysis. Oxygen (O2) is the only gas generated during alumina electrolysis with the new electrolyte and the inert anodes, thus eliminating the production of greenhouse gases. Anodes and cathodes can be mounted in either a vertical, horizontal, or some other configuration.
PCT/US2004/037180 2003-11-05 2004-11-04 Process for electrolytic production of aluminum WO2005045101A2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
CA002544702A CA2544702A1 (en) 2003-11-05 2004-11-04 Process for electrolytic production of aluminum
AU2004288233A AU2004288233A1 (en) 2003-11-05 2004-11-04 Process for electrolytic production of aluminum
BRPI0416235-8A BRPI0416235A (en) 2003-11-05 2004-11-04 electrolyte, and methods for using inert anodes and wetting cathodes in electrolytically producing aluminum and for electrolyzing alumina below 1000 c
EP04816943A EP1689913A2 (en) 2003-11-05 2004-11-04 Process for electrolytic production of aluminum
NO20062501A NO20062501L (en) 2003-11-05 2006-05-31 Process for electrolytic production of aluminum

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/702,419 2003-11-05
US10/702,419 US20050092619A1 (en) 2003-11-05 2003-11-05 Process for electrolytic production of aluminum

Publications (2)

Publication Number Publication Date
WO2005045101A2 WO2005045101A2 (en) 2005-05-19
WO2005045101A3 true WO2005045101A3 (en) 2007-08-16

Family

ID=34551674

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2004/037180 WO2005045101A2 (en) 2003-11-05 2004-11-04 Process for electrolytic production of aluminum

Country Status (10)

Country Link
US (1) US20050092619A1 (en)
EP (1) EP1689913A2 (en)
CN (1) CN101103141A (en)
AU (1) AU2004288233A1 (en)
BR (1) BRPI0416235A (en)
CA (1) CA2544702A1 (en)
NO (1) NO20062501L (en)
RU (1) RU2006119476A (en)
WO (1) WO2005045101A2 (en)
ZA (1) ZA200603562B (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101709487A (en) * 2009-12-18 2010-05-19 中国铝业股份有限公司 Aluminum electrolytic electrolyte
CN101857961A (en) * 2010-06-13 2010-10-13 中国铝业股份有限公司 Method for reducing per-unit production energy consumption of aluminium electrolytic bath
RU2449059C2 (en) * 2010-07-21 2012-04-27 Общество с ограниченной ответственностью "Легкие металлы" Electrolysis unit for aluminium manufacture
ES2379434B2 (en) * 2010-10-01 2012-09-06 Asturiana De Aleaciones, S.A. COMPOSITION OF ELECTROLYTE FOR OBTAINING METAL ALUMINUM
CN102251259A (en) * 2011-07-09 2011-11-23 中国铝业股份有限公司 Aluminum electrolyte system with high conductivity and high solvability
RU2499085C1 (en) * 2012-03-16 2013-11-20 Общество с ограниченной ответственностью "Легкие металлы" Electrolysis unit for aluminium manufacture
CN102650064A (en) * 2012-05-23 2012-08-29 深圳市新星轻合金材料股份有限公司 Potassium cryolite used for aluminum electrolysis industry and preparation method for potassium cryolite
WO2013174065A1 (en) * 2012-05-23 2013-11-28 深圳市新星轻合金材料股份有限公司 Cryolite with low molecular ratio used in aluminum electrolysis industry and preparation method thereof
GB2502392B (en) * 2012-05-23 2017-11-15 Shenzhen Sunxing Light Alloys Mat Co Ltd Method for preparing an electrolyte supplement system in aluminium electrolysis
CN102649577A (en) * 2012-05-23 2012-08-29 深圳市新星轻合金材料股份有限公司 Sodium cryolite for aluminum electrolytic industry and preparation method thereof
CN102689907A (en) * 2012-05-30 2012-09-26 深圳市新星轻合金材料股份有限公司 Preparing method and application of transition metal boride
RU2502832C1 (en) * 2012-10-08 2013-12-27 Общество с ограниченной ответственностью "Объединенная Компания РУСАЛ Инженерно-технологический центр" Protection method of cathode units with wetted coating based on titanium diboride at baking of electrolysis unit
UA117473C2 (en) * 2013-02-14 2018-08-10 Алльянс Магнезіум Hydrogen gas diffusion anode arrangement producing hcl
RU2550683C1 (en) * 2013-12-19 2015-05-10 Федеральное Государственное Автономное Образовательное Учреждение Высшего Профессионального Образования "Сибирский Федеральный Университет" Electrolysis unit for aluminium making
CN110777395A (en) * 2019-11-27 2020-02-11 镇江慧诚新材料科技有限公司 Upper structure of oxygen-aluminum co-production electrolytic cell

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6379512B1 (en) * 1998-02-11 2002-04-30 Northwest Aluminum Technology Combination for electrolytic reduction of alumina
US6436272B1 (en) * 1999-02-09 2002-08-20 Northwest Aluminum Technologies Low temperature aluminum reduction cell using hollow cathode

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6379512B1 (en) * 1998-02-11 2002-04-30 Northwest Aluminum Technology Combination for electrolytic reduction of alumina
US6436272B1 (en) * 1999-02-09 2002-08-20 Northwest Aluminum Technologies Low temperature aluminum reduction cell using hollow cathode

Also Published As

Publication number Publication date
RU2006119476A (en) 2007-12-20
AU2004288233A1 (en) 2005-05-19
BRPI0416235A (en) 2007-01-02
EP1689913A2 (en) 2006-08-16
CN101103141A (en) 2008-01-09
ZA200603562B (en) 2007-07-25
NO20062501L (en) 2006-08-01
WO2005045101A2 (en) 2005-05-19
CA2544702A1 (en) 2005-05-19
US20050092619A1 (en) 2005-05-05

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