Title:
METHOD FOR EXTRACTING ALUMINUM
Document Type and Number:
WIPO Patent Application WO/2023/229007
Kind Code:
A1
Abstract:
The problem to be solved by the present invention is to provide a method for extracting aluminum without causing precipitation of aluminum from an acid dissolution solution. A method for extracting aluminum according to the present invention includes an aluminum extraction step for mixing an acid dissolution solution containing aluminum with an organic solvent containing mono-2-ethylhexyl 2-ethylhexylphosphonate and extracting the aluminum from the acid dissolution solution under conditions in which the equilibrium pH is less than 1.8. When this acid dissolution solution also contains fluorine, the method for extracting aluminum of the present invention includes a step for adjusting the aluminum concentration of this raffinate to a desired range, co-precipitating the fluorine by adjusting the equilibrium pH to 2-7 to generate aluminum hydroxide, and separating and removing the fluorine by solid-liquid separation.
Inventors:
YAMADA KEITA (JP)
SAKUMA YUKIO (JP)
HIRAOKA TARO (JP)
NAKAZAWA JUN (JP)
SHIMOGOCHI TAISUKE (JP)
SAKUMA YUKIO (JP)
HIRAOKA TARO (JP)
NAKAZAWA JUN (JP)
SHIMOGOCHI TAISUKE (JP)
Application Number:
PCT/JP2023/019500
Publication Date:
November 30, 2023
Filing Date:
May 25, 2023
Export Citation:
Assignee:
ASAKA RIKEN CO LTD (JP)
International Classes:
C22B3/38; B09B3/80; B09B5/00; C22B3/06; C22B3/44; C22B7/00; C22B21/00; H01M10/54
Foreign References:
| JP2012211386A | 2012-11-01 | |||
| JP2016186113A | 2016-10-27 | |||
| JPS5438273A | 1979-03-22 | |||
| JP2015183292A | 2015-10-22 |
Attorney, Agent or Firm:
DELOITTE TOHMATSU IP FIRM (JP)
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