Title:
METHOD FOR RECOVERING PGM
Document Type and Number:
WIPO Patent Application WO/2012/099009
Kind Code:
A1
Abstract:
Provided is a method for suppressing distribution of PGM to Cu2O slag in oxidation smelting in a method for recovering PGM. Specifically provided is a method for recovering PGM, which comprises: a reduction smelting step wherein a member to be processed that contains PGM, Cu and/or Cu2O and a reducing flux are subjected to reduction smelting so that molten slag and a Cu alloy containing PGM are produced; and an oxidation smelting step wherein the Cu alloy containing PGM is subjected to oxidation smelting so that Cu2O slag containing PGM and a Cu alloy having a higher PGM concentration than the above-described Cu alloy containing PGM are produced. An acidic oxide or a basic oxide is added in the oxidation smelting step of the method for recovering PGM.
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Inventors:
NAKAMURA YUZURU (JP)
KAWASAKI MINORU (JP)
YAMAGUCHI KATSUNORI (JP)
KAWASAKI MINORU (JP)
YAMAGUCHI KATSUNORI (JP)
Application Number:
PCT/JP2012/050573
Publication Date:
July 26, 2012
Filing Date:
January 13, 2012
Export Citation:
Assignee:
DOWA METALS & MINING CO LTD (JP)
NAKAMURA YUZURU (JP)
KAWASAKI MINORU (JP)
YAMAGUCHI KATSUNORI (JP)
NAKAMURA YUZURU (JP)
KAWASAKI MINORU (JP)
YAMAGUCHI KATSUNORI (JP)
International Classes:
C22B11/02; B01J23/42; B01J38/00; B09B3/00; C22B7/00; C22B9/10
Foreign References:
| JPH04317423A | 1992-11-09 | |||
| JP2004270008A | 2004-09-30 | |||
| JP2004068071A | 2004-03-04 | |||
| JP2003301225A | 2003-10-24 | |||
| JP2000248322A | 2000-09-12 | |||
| JP2009024263A | 2009-02-05 |
Other References:
See also references of EP 2666876A4
Attorney, Agent or Firm:
ANIYA Setuo et al. (JP)
Ani store Setsuo (JP)
Ani store Setsuo (JP)
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Claims: