Title:
VALUABLE METAL RECOVERY METHOD
Document Type and Number:
Japanese Patent JP2011231366
Kind Code:
A
Abstract:
To provide a valuable metal recovery method that has excellent valuable metal selectivity and recovery efficiency, and furthermore is capable of reusing materials that have been used in the recovery of a valuable metal.
The valuable metal recovery method is characterized by including the following steps (a) to (c): (a) a step for preparing an aqueous solution that contains valuable metal ions and a pH-responsive polymer using formula (I) as a constituent unit and that has a pH higher than 6.4; (b) a step for lowering the pH of the aqueous solution below 6.4 and forming an aggregate of the pH-responsive polymer and the valuable metal; and (c) a step for recovering the aggregate from the aqueous solution.
Inventors:
IGARASHI TOSHIO
FUSHIKI TAKANORI
MURAKAMI KOICHI
TAKEMORI TOSHIIKU
YOSHIDA NORIHIRO
FUSHIKI TAKANORI
MURAKAMI KOICHI
TAKEMORI TOSHIIKU
YOSHIDA NORIHIRO
Application Number:
JP2010101935A
Publication Date:
November 17, 2011
Filing Date:
April 27, 2010
Export Citation:
Assignee:
UNIV IBARAKI
MARUZEN PETROCHEM CO LTD
MARUZEN PETROCHEM CO LTD
International Classes:
C22B3/24; C02F1/58; C02F1/62; C02F1/64; C22B7/00; C22B11/00; C22B13/00; C22B15/00; C22B17/00; C22B19/20; C22B21/00; C22B23/00; C22B26/20; C22B30/06; C22B34/12; C22B34/14; C22B34/24; C22B35/00; C22B43/00; C22B58/00; C22B59/00
Attorney, Agent or Firm:
Ono International Patent Office