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Title:
METHOD FOR RECOVERING NOBLE METAL FROM FUNCTIONALISED NOBLE METAL-CONTAINING ADSORPTION MATERIAL
Document Type and Number:
Japanese Patent JP2012197512
Kind Code:
A
Abstract:

To provide a method for separating noble metal from a scavenger material by which the noble metal can be more efficiently separated as compared to a known method of a prior art.

A method for recovering noble metal includes steps of: (i) preparing a noble metal-containing composition containing an adsorption agent that is based on an inorganic material, functionalised by an organic group and has at least one noble metal adsorbed thereto; (ii) ashing the noble metal-containing composition prepared in the procedural step (i) to obtain an ashed composition; (iii) at least partially dissolving the ashed composition obtained in the procedural step (ii) in an alkaline aqueous solution to obtain a noble metal-containing residue; (iv) at least partially dissolving the noble metal-containing residue obtained in the procedural step (iii) in an oxidizing aqueous acid to obtain an aqueous solution of a noble metal salt; and (v) recovering, if applicable, the noble metal through reduction of the noble metal salt obtained in the procedural step (iv).


Inventors:
KRALIK JOACHIM
STETTNER MARTIN
STEFANIE FUCHS ALAMEDA
Application Number:
JP2012060204A
Publication Date:
October 18, 2012
Filing Date:
March 16, 2012
Export Citation:
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Assignee:
HERAEUS PRECIOUS METALS GMBH
International Classes:
C22B11/00; B09B3/00; C22B1/02; C22B3/00; C22B3/24; C22B5/12
Attorney, Agent or Firm:
アインゼル・フェリックス=ラインハルト
上島 類
久野 琢也
二宮 浩康
住吉 秀一
宮城 康史
星 公弘
来間 清志
篠 良一
高橋 佳大