Title:
A precious-metals ion desorption agent and a recovery method of the precious metals
Document Type and Number:
Japanese Patent JP6123284
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a noble metal ion desorbent and a noble metal recovering method which can efficiently desorb noble metal ions adsorbed by an adsorbent and can simply recover highly pure noble metal by reductive treatment of the desorption liquid.SOLUTION: An adsorbent having noble metal ions adsorbed is contacted with a solution containing a sulfide compound represented by the general formula (1) to desorb the noble metal ions in the solution and, thereafter, the obtained solution containing the noble metal ions is subjected to reduction treatment to recover a noble metal. (In the formula (1), R represents a methyl group, an ethyl group, a vinyl group, a linear, branched, or cyclic hydrocarbon group having 3 to 8 carbon atoms, an aromatic hydrocarbon group having 6 to 14 carbon atoms, a carboxymethyl group, a carbamoylmethyl group, a 4-carboxyl-3-thiabutyl group, or a 4-carbamoyl-3-thiabutyl group; and X represents a hydroxyl group or a primary amino group.)
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Inventors:
Yukinori Sudo
Setsuo Yoshida
Takahiro Masuda
Setsuo Yoshida
Takahiro Masuda
Application Number:
JP2012279645A
Publication Date:
May 10, 2017
Filing Date:
December 21, 2012
Export Citation:
Assignee:
Tosoh Corporation
International Classes:
C22B11/00; B01J20/34; C07C323/60; C22B3/24
Domestic Patent References:
| JP1293139A | ||||
| JP2012149344A | ||||
| JP2010059533A |