Title:
METAL RECOVERY METHOD AND METAL RECOVERY DEVICE
Document Type and Number:
WIPO Patent Application WO/2012/026061
Kind Code:
A1
Abstract:
A valuable-metal recovery method for recovering metals from lithium-ion batteries without using cumbersome steps and using comparatively simple equipment. A positive-electrode material containing a lithium/transition-metal composite oxide is dissolved in an acid solution; the resulting acidic solution containing lithium ions and transition-metal ions is passed through a base anion-exchange resin; and the metal ions are separated by collecting a solution eluted from the anion-exchange resin over an initial period (D) into a first container, said solution having a high relative concentration of transition-metal ions, and collecting a solution eluted over a subsequent period (E) into a second container, said solution having a high relative concentration of lithium ions.
Inventors:
KOJIMA YASUKO (JP)
YAMAGUCHI YOSHIHIDE (JP)
OKAMOTO MASAHIDE (JP)
YAMAGUCHI YOSHIHIDE (JP)
OKAMOTO MASAHIDE (JP)
Application Number:
PCT/JP2011/003849
Publication Date:
March 01, 2012
Filing Date:
July 06, 2011
Export Citation:
Assignee:
HITACHI LTD (JP)
KOJIMA YASUKO (JP)
YAMAGUCHI YOSHIHIDE (JP)
OKAMOTO MASAHIDE (JP)
KOJIMA YASUKO (JP)
YAMAGUCHI YOSHIHIDE (JP)
OKAMOTO MASAHIDE (JP)
International Classes:
C22B26/12; C22B3/04; C22B3/42; C22B7/00; C22B23/00; C22B47/00; H01M10/54
Foreign References:
| JPH1154159A | 1999-02-26 | |||
| JP2007122885A | 2007-05-17 | |||
| JP2002167628A | 2002-06-11 |
Attorney, Agent or Firm:
INOUE, Manabu et al. (JP)
Manabu Inoue (JP)
Manabu Inoue (JP)
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Claims: