Title:
イリジウムの回収方法
Document Type and Number:
Japanese Patent JP5767951
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To highly efficiently recover iridium from iridium and ruthenium adsorbed by activated carbon available at a relatively low cost, upon purifying/recovering iridium.SOLUTION: There is provided a method of recovering iridium comprising purifying/recovering iridium from iridium and ruthenium adsorbed by activated carbon, which method includes an incineration process (S1) of incinerating activated carbon having adsorbed iridium and ruthenium, a chloride volatilization process (S2) of removing impurities from the incineration ash obtained in the incineration process (S1) by chloride volatilization, a water soluble salt conversion process (S3) of converting iridium/ruthenium in the residue of chloride volatilization to water soluble salts, a leaching process (S4) of leaching iridium and ruthenium using water from the salts obtained by the water soluble salt conversion process (S3), a ruthenium distillation process (S5) of distilling and removing ruthenium from a water-leaching liquid obtained by the leaching process (S4), and a crystallizing process (S6) of crystallizing iridium in the distillation liquid residue obtained by the ruthenium distillation process (S5).
Inventors:
Shojiro Usui
Atsushi Fujimoto
Katsumi Saito
Atsushi Fujimoto
Katsumi Saito
Application Number:
JP2011260614A
Publication Date:
August 26, 2015
Filing Date:
November 29, 2011
Export Citation:
Assignee:
jx Nippon Mining & Metals Co., Ltd.
International Classes:
C22B11/00; C22B1/00; C22B3/22; C22B3/44; C22B7/00
Domestic Patent References:
| JP2009179873A | ||||
| JP2002194581A | ||||
| JP57079135A |
Foreign References:
| WO2002053788A1 |
Attorney, Agent or Firm:
Axis International Patent Business Corporation