Title:
VALUABLE METAL LEACHING METHOD, AND VALUABLE METAL COLLECTION METHOD EMPLOYING THE LEACHING METHOD
Document Type and Number:
WIPO Patent Application WO/2012/102384
Kind Code:
A1
Abstract:
The present invention provides a valuable metal leaching method and a valuable metal collection method, in each of which the leaching of a valuable metal can be achieved with high efficiency, the amount of a reducing agent to be used can be reduced, and the cost can be reduced. The present invention is characterized in that a positive electrode material is immersed in an acidic solution together with a metal having a poorer reduction potential than that of hydrogen and a valuable metal is allowed to leach from a positive electrode active material.
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Inventors:
ISHIDA HITOSHI (JP)
KAWAKAMI YUKIE (JP)
KUDO KEIJI (JP)
ASANO SATOSHI (JP)
KAWAKAMI YUKIE (JP)
KUDO KEIJI (JP)
ASANO SATOSHI (JP)
Application Number:
PCT/JP2012/051832
Publication Date:
August 02, 2012
Filing Date:
January 27, 2012
Export Citation:
Assignee:
SUMITOMO METAL MINING CO (JP)
ISHIDA HITOSHI (JP)
KAWAKAMI YUKIE (JP)
KUDO KEIJI (JP)
ASANO SATOSHI (JP)
ISHIDA HITOSHI (JP)
KAWAKAMI YUKIE (JP)
KUDO KEIJI (JP)
ASANO SATOSHI (JP)
International Classes:
C22B7/00; B09B3/00; C22B3/04; C22B3/44; C22B23/00; H01M10/54
Foreign References:
| JP2012036419A | 2012-02-23 | |||
| JPH07207349A | 1995-08-08 | |||
| JPH06346160A | 1994-12-20 | |||
| JPH07207349A | 1995-08-08 | |||
| JPH10330855A | 1998-12-15 | |||
| JPH0822846A | 1996-01-23 | |||
| JP2003157913A | 2003-05-30 | |||
| JPH11293357A | 1999-10-26 |
Other References:
See also references of EP 2669390A4
Attorney, Agent or Firm:
KOIKE, Akira et al. (JP)
Akira Koike (JP)
Akira Koike (JP)
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Claims: