The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 03, 2015
Filed:
Jan. 13, 2012
Applicants:
Yuzuru Nakamura, Tokyo, JP;
Minoru Kawasaki, Tokyo, JP;
Katsunori Yamaguchi, Iwate, JP;
Inventors:
Assignee:
DOWA METALS & MINING CO., LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C22B 11/02 (2006.01); C22B 15/00 (2006.01);
U.S. Cl.
CPC ...
C22B 11/02 (2013.01); C22B 11/021 (2013.01); C22B 11/026 (2013.01); C22B 15/0002 (2013.01); C22B 15/0056 (2013.01); C22B 15/0058 (2013.01); Y02W 30/54 (2015.05);
Abstract
A method of suppressing a distribution of PGM into a Cu2O slag in an oxidation smelting of a method of recovering PGM, is provided, including: carrying out reduction smelting to a treatment target member containing PGM, Cu and/or CuO, and flux, to thereby generate a molten slag and a Cu alloy containing PGM; and oxidizing and melting the Cu alloy containing the PGM, to thereby generate a CuO slag containing PGM and the Cu alloy, with more concentrated PGM concentration than the Cu alloy containing the PGM, wherein when carrying out the oxidation smelting, acidic oxide or basic oxide is added.