Title:
The separation collecting method of a platinum group
Document Type and Number:
Japanese Patent JP6025468
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a safe and simple method with a light environmental load for separating/recovering a platinum group element that is a recovery process of platinum group metals using a wet method and an ion exchange method and has an excellent rate of separation/recovery of each platinum group element.SOLUTION: A method for separating/recovering a platinum group element includes a leaching step for leaching a mixture of platinum group elements into a hydrochloric acid solution to prepare a leachate, a first separation/recovery step for separating/recovering palladium by bringing a palladium adsorbent into contact with the leachate, a second separation/recovery step for separating/recovering platinum by bringing a platinum adsorbent into contact with a leachate after the first separation/recovery obtained in the first separation/recovery step at a high velocity, the velocity at which rhodium being hardly adsorbed, and a third separation/recovery step for batchwise separating/recovering rhodium by bringing a rhodium adsorbent into contact with a leachate after the second separation/recovery obtained in the second separation/recovery step. The palladium adsorbent includes a porous resin and an extraction agent supported by the porous resin, while the platinum adsorbent and rhodium adsorbent are each a weak base ion exchange resin.
Inventors:
Kazuharu Yoshizuka
Matsunori Toshinori
Shohei Nishihama
Matsunori Toshinori
Shohei Nishihama
Application Number:
JP2012201195A
Publication Date:
November 16, 2016
Filing Date:
September 13, 2012
Export Citation:
Assignee:
Sanyo Shoten Co., Ltd.
International Classes:
C22B11/00; B01J20/22; B01J20/26; C22B3/04; C22B3/24; C22B7/00
Domestic Patent References:
| JP3277731A | ||||
| JP9203792A | ||||
| JP7300630A |
Foreign References:
| WO2011132740A1 |
Attorney, Agent or Firm:
Ichiro Enomoto