WO2009007440A3 - Process for the electrochemical purification of aluminium - Google Patents

Process for the electrochemical purification of aluminium Download PDF

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Publication number
WO2009007440A3
WO2009007440A3 PCT/EP2008/059053 EP2008059053W WO2009007440A3 WO 2009007440 A3 WO2009007440 A3 WO 2009007440A3 EP 2008059053 W EP2008059053 W EP 2008059053W WO 2009007440 A3 WO2009007440 A3 WO 2009007440A3
Authority
WO
WIPO (PCT)
Prior art keywords
aluminium
electrolyte
cathode
substream
additional metal
Prior art date
Application number
PCT/EP2008/059053
Other languages
German (de)
French (fr)
Other versions
WO2009007440A2 (en
Inventor
Matthias Maase
Guenther Huber
Ingo Richter
Itamar Malkowsky
Andreas Fischer
Original Assignee
Basf Se
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 Basf Se filed Critical Basf Se
Publication of WO2009007440A2 publication Critical patent/WO2009007440A2/en
Publication of WO2009007440A3 publication Critical patent/WO2009007440A3/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
    • C25C3/24—Refining
    • 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

Abstract

The present invention relates to a process for the electrochemical purification of aluminium, which comprises the steps (a) provision of an electrolysis apparatus having at least one anode and at least one cathode in an electrolysis space, where the at least one anode and the at least one cathode are connected by an electrolyte and the electrolyte is present in the form of an electrolyte stream; (b) oxidation at the at least one anode which contains aluminium and at least one of the additional metals antimony, lead, iron, bismuth, tin, zinc or copper, where aluminium and the at least one additional metal go at least partly into the electrolyte in the form of their ions; (c) discharge of part of the electrolyte stream from the electrolysis space, where the substream contains at least part of the ions of aluminium and of the at least one additional metal ion; (d) removal of at least part of the at least one additional metal ion from the substream; (e) introduction of the substream which has been depleted in additional metal ions in step (d) into the electrolysis space and (f) deposition of the aluminium from the substream fed in in step (e) on the at least one cathode, where the electric current density at the at least one cathode is at least 50 A/m2.
PCT/EP2008/059053 2007-07-12 2008-07-11 Process for the electrochemical purification of aluminium WO2009007440A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP07112359 2007-07-12
EP07112359.0 2007-07-12

Publications (2)

Publication Number Publication Date
WO2009007440A2 WO2009007440A2 (en) 2009-01-15
WO2009007440A3 true WO2009007440A3 (en) 2009-08-27

Family

ID=39790306

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/059053 WO2009007440A2 (en) 2007-07-12 2008-07-11 Process for the electrochemical purification of aluminium

Country Status (1)

Country Link
WO (1) WO2009007440A2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2419544A1 (en) 2009-04-16 2012-02-22 Basf Se Removal of metallic salt-containing ionic fluids from surface-treated work pieces and recycling of said fluids
RU2522920C1 (en) * 2013-04-04 2014-07-20 Федеральное государственное бюджетное учреждение науки Институт высокотемпературной электрохимии Уральского отделения Российской Академии наук Electrolytic cell for fine-ply electrolytic refining of metal lead
CN113913868A (en) * 2021-10-29 2022-01-11 北京欧菲金太科技有限责任公司 Ionic liquid electrolyte, 6N ultra-pure aluminum obtained by ionic liquid electrolyte and preparation method of ionic liquid electrolyte
CN115058743A (en) * 2021-12-28 2022-09-16 昆明理工大学 Novel composite electrolyte and method for low-temperature electrolytic refining of secondary aluminum by using same

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020070122A1 (en) * 2000-10-20 2002-06-13 The University Of Alabama Production, refining and recycling of lightweight and reactive metals in ionic liquids
WO2005017234A1 (en) * 2003-08-14 2005-02-24 Moltech Invent S.A. Metal electrowinning cell with electrolyte purifier

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020070122A1 (en) * 2000-10-20 2002-06-13 The University Of Alabama Production, refining and recycling of lightweight and reactive metals in ionic liquids
WO2005017234A1 (en) * 2003-08-14 2005-02-24 Moltech Invent S.A. Metal electrowinning cell with electrolyte purifier

Also Published As

Publication number Publication date
WO2009007440A2 (en) 2009-01-15

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