Title:
NOBLE METAL RECOVERY KIT, RECOVERY METHOD, AND RECOVERY DEVICE
Document Type and Number:
WIPO Patent Application WO/2024/029355
Kind Code:
A1
Abstract:
Provided is a noble metal recovery kit that is capable of recovering highly pure noble metal from a metal secondary resource in a simple and energy-saving manner. A noble metal recovery kit according to the present disclosure is for recovering a noble metal (M) and comprises a noble metal dissolving liquid, a diluent, and an adsorbent material. The noble metal dissolving liquid contains hydrochloric acid and nitric acid such that hydrochloric acid/nitric acid (molar ratio) is 2-6. The diluent is a liquid for diluting a noble metal solution obtained by dissolving the noble metal (M) in the noble metal dissolving liquid, and is a solution that adjusts the nitric acid concentration in the noble metal solution to not less than 10 times the molar concentration of noble metal ions (Mn+) in the noble metal solution and to less than 1.5 mol/L. The adsorbent material is a member which has the property of adsorbing noble metal ions (Mn+).
Inventors:
SAKATA YUMI (JP)
Application Number:
PCT/JP2023/026575
Publication Date:
February 08, 2024
Filing Date:
July 20, 2023
Export Citation:
Assignee:
DAICEL CORP (JP)
International Classes:
C22B11/00; C22B3/06; C22B3/24; C22B7/00
Foreign References:
| JP2014109064A | 2014-06-12 | |||
| JPS63297222A | 1988-12-05 | |||
| JP7243947B1 | 2023-03-22 |
Attorney, Agent or Firm:
G-CHEMICAL INTELLECTUAL PROPERTY FIRM (JP)
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