Title:
METHOD FOR RECOVERING NOBLE METAL
Document Type and Number:
Japanese Patent JP2015089947
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a highly efficient method for recovering noble metal enabling noble metal to be recovered with high yield.SOLUTION: The method for recovering noble metal comprises an adsorption step of a noble metal for contacting a solution containing the noble metal with a noble metal ion separating agent to obtain a noble metal separating agent having adsorbed the noble metal ion, a noble metal desorption step of contacting the noble metal ion separating agent having adsorbed the noble metal ion with a noble metal ion desorbent and desorbing the noble ion to obtain a solution containing the noble metal ion, and a noble metal recovery step of adding an alkaline material and a reductant to the solution of the noble metal ion to recover the noble metal. In the noble metal desorption step, the noble metal ion desorption liquid is obtained as a first noble metal desorption step containing the noble metal ion selected from a range of 80 to 99.9 wt.% of the total amount of desorbed noble metal ion and a second desorption liquid, and the first desorption liquid is supplied to the noble metal recovery step and the second desorption liquid is supplied to the noble metal desorption step.
Inventors:
HATTORI MASANORI
SUDO YUKINORI
MASUDA TAKAHIRO
SUDO YUKINORI
MASUDA TAKAHIRO
Application Number:
JP2013229363A
Publication Date:
May 11, 2015
Filing Date:
November 05, 2013
Export Citation:
Assignee:
TOSOH CORP
International Classes:
C22B11/00; C22B3/24; C22B3/44