A precious-metals content scrap handling thing, its manufacturing method, and a recovery method of the precious metals - National University Corporation Tokyo University

Title:

A precious-metals content scrap handling thing, its manufacturing method, and a recovery method of the precious metals

Document Type and Number:

Japanese Patent JP5946034

Kind Code:

B2

Abstract:

PROBLEM TO BE SOLVED: To provide a processed product of noble metal-containing scrap from which the noble metal can be simply and efficiently recovered and a production method therefor and a noble metal recovery method.SOLUTION: A processed product of noble metal-containing scrap contains a base material and a layer suited for the physical separation of the noble metal, formed on the base material and containing a noble metal compound, and the noble metal compound is a noble metal alloy or a noble metal sulfide. In a production method for the processed product of noble metal-containing scrap, the noble metal alloy is an alloy with at least one metal selected from the group consisting of iron, copper, nickel, zinc, and lead, and the layer suited for the physical separation containing a noble metal compound formed by alloying a noble metal with a metal is formed by bringing scrap containing a base material carrying the noble metal into contact with the metal compound. The noble metal sulfide is obtained by sulfiding the noble metal by bringing the scrap into contact with sulfur or a sulfur compound. Further, a noble metal recovery method includes a step of forming the noble metal compound, a step of recovering the formed noble metal compound by a physical separation method, and a step of extracting the noble metal from the noble metal compound.

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Inventors:

Toru Okabe
Junpei Mitsui

Application Number:

JP2012009111A

Publication Date:

July 05, 2016

Filing Date:

January 19, 2012

Export Citation:

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Assignee:

National University Corporation Tokyo University

International Classes:

C22B11/00; B03C1/00; B03C1/02; B03D1/00; B09B3/00; B09B5/00; C22B1/00; C22B7/00

Domestic Patent References:

JP2009256745A
JP2011252217A

Foreign References:

WO2010021341A1
WO2007099714A1

Attorney, Agent or Firm:

Masatake Shiga
Yoshifumi Saeki
Yasuhiko Murayama
Kazunori Onami
Makiko Otsuki

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