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Title:
METHOD FOR RECOVERING NOBLE METAL AND NOBLE METAL RECOVERING AGENT
Document Type and Number:
WIPO Patent Application WO/2017/170444
Kind Code:
A1
Abstract:
A method for recovering a noble metal from a mixture that contains the noble metal with use of a noble metal recovering agent which contains at least one amine compound selected from among aromatic primary amine compounds and aliphatic primary amine compounds. In this method for recovering a noble metal, the noble metal recovering agent and the mixture are added into a hydrochloric acid that has a concentration of from 1.0 mol/L to 9.0 mol/L (inclusive), and the noble metal recovering agent is caused to adsorb the noble metal. In this connection, the aromatic primary amine compounds are aniline, 3-phenoxy aniline, 4-phenoxy aniline and 4-alkyl anilines having an alkyl group with 1-8 carbon atoms; and the aliphatic primary amine compounds are linear alkyl monoamines having 6 to 18 carbon atoms (inclusive), 2-ethylhexyl amine and benzyl amine. By this method, a noble metal is efficiently recovered at low cost.

Inventors:
MATSUMOTO, Kazuya (1-1 Tegata Gakuen-Machi, Akita-sh, Akita 02, 〒0108502, JP)
JIKEI, Mitsutoshi (1-1 Tegata Gakuen-Machi, Akita-sh, Akita 02, 〒0108502, JP)
YAMAKAWA, Sumito (1-1 Tegata Gakuen-Machi, Akita-sh, Akita 02, 〒0108502, JP)
Application Number:
JP2017/012468
Publication Date:
October 05, 2017
Filing Date:
March 27, 2017
Export Citation:
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Assignee:
AKITA UNIVERSITY (1-1 Tegata Gakuen-Machi, Akita-shi Akita, 02, 〒0108502, JP)
International Classes:
C22B11/00; B01D15/00; B01J20/22; B01J20/28; C02F1/28; C22B3/24
Foreign References:
JP2005194546A2005-07-21
JPS6153117A1986-03-17
JP2016013500A2016-01-28
Other References:
MIHOKO ABE ET AL.: "Separation of Metals by Extraction with High Molecular Weight Amines", TOHOKU UNIVERSITY SENKO SEIREN KENKYUSHO IHO, vol. 9, no. l, 1964, pages 59 - 64, ISSN: 0040876X
Attorney, Agent or Firm:
YAMAMOTO, Noriaki (3rd Floor Oak Building Kyobashi, 16-10, Kyobashi 1-chome, Chuou-k, Tokyo 31, 〒1040031, JP)
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