Title:
METHOD FOR PRODUCING ALUMINUM
Document Type and Number:
WIPO Patent Application WO/2018/147399
Kind Code:
A1
Abstract:
This method for producing aluminum includes: a dissolution step of dissolving an Al-containing hydrate in water so as to prepare an aqueous solution that contains Al ions; an extraction step of bringing an aqueous phase constituted from the aqueous solution into contact with an organic phase constituted from an extraction agent so as to extract Al ions in the aqueous phase into the organic phase; and an electrodeposition step of carrying out electrolysis using the organic phase as an electrolyte solution so as to electrodeposit metallic Al on the surface of a cathode from Al ions in the electrolyte solution. In the dissolution step, the concentration of Al ions in the aqueous solution is 0.01-1 M. Extraction conditions in the extraction step are a volume ratio (aqueous phase/organic phase) of 0.1-2, a bath temperature of 20-100ºC, and a stirring time of 1-60 minutes, and the electrodeposition conditions in the electrodeposition step are a bath temperature of 20-350ºC and a current density of 1-1000 μA/cm2.
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Inventors:
NUNOMURA JUNJI (JP)
HONKAWA YUKIO (JP)
KOJIMA YOICHI (JP)
UEDA MIKITO (JP)
HONKAWA YUKIO (JP)
KOJIMA YOICHI (JP)
UEDA MIKITO (JP)
Application Number:
PCT/JP2018/004511
Publication Date:
August 16, 2018
Filing Date:
February 09, 2018
Export Citation:
Assignee:
UACJ CORP (JP)
International Classes:
C25C3/18
Foreign References:
| JPS5249249A | 1977-04-20 | |||
| JP2015077583A | 2015-04-23 | |||
| JPS55158289A | 1980-12-09 |
Attorney, Agent or Firm:
EINSEL Felix-Reinhard et al. (JP)
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