Title:
白金族元素の回収方法
Document Type and Number:
Japanese Patent JP5644250
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a method for recovering platinum group elements, by which Rh and Ru can be efficiently separated and recovered from a solution containing Rh and Ru through their adsorption to an adsorbent so as to be recycled as materials, wherein the solution containing Rh and Ru is produced through a wet treatment of electronic component waste, etc.SOLUTION: The method for recovering the platinum group elements comprises: adding an aqueous hydrochloric acid solution to the solution containing the platinum group elements comprising Rh and/or Ru, thereby adjusting the hydrochloric acid concentration in the solution to ≤0.1 mol/l; subsequently adding and mixing the adsorbent comprising granular alkyl amine-modified insoluble tannin gel to the solution with the adjusted concentration; keeping the solution at ≥30°C so as to induce adsorption of the platinum group elements contained in the solution to the adsorbent; separating the adsorbent adsorbing the platinum group elements from the solution; and incinerating the adsorbent adsorbing the platinum group elements, thereby recovering the platinum group elements.
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Inventors:
西村 建二
中野 義夫
中野 義夫
Application Number:
JP2010182679A
Publication Date:
December 24, 2014
Filing Date:
August 18, 2010
Export Citation:
Assignee:
三菱マテリアル株式会社
International Classes:
C22B11/00; B01D15/00; B01J20/24; C22B3/24; C22B7/00; C22B11/02
Attorney, Agent or Firm:
Masayoshi Suda