Title:
METAL LEACHING METHOD
Document Type and Number:
Japanese Patent JP2012246519
Kind Code:
A
Abstract:
To recover rare metal more easily at low cost.
Prepared mixed powder is subjected to pulverization treatment. For example, the pulverization treatment can be performed using a ball mill. Through the pulverization treatment, a metal oxide and a reducing agent in the mixed powder react each other in a solid phase by a mechanochemical reaction, so that the metal oxide is reduced. It is known that, in pulverization treatment by rotational motion using a pulverization ball in a ball mill, not only physical pulverization treatment but also a mechanochemical reaction causing a chemical reaction by mechanical energy are caused. A reduced material such as metal is derived from the metal oxide by the reduction.
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Inventors:
FURUYA TAKASHI
TSUDA MASAYUKI
HARA MIEKO
NAKAMURA JIRO
KUNIOKA TATSUYA
TSUDA MASAYUKI
HARA MIEKO
NAKAMURA JIRO
KUNIOKA TATSUYA
Application Number:
JP2011117727A
Publication Date:
December 13, 2012
Filing Date:
May 26, 2011
Export Citation:
Assignee:
NIPPON TELEGRAPH & TELEPHONE
International Classes:
C22B3/04; B01D11/02; B09B3/00; C22B7/00; C22B23/00; C22B26/12; C22B34/12; C22B34/32; C22B47/00; B22F9/20
Attorney, Agent or Firm:
Masaki Yamakawa
Shigeki Yamakawa
Yuzo Koike
Shigeki Yamakawa
Yuzo Koike