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Title:
METHOD FOR RECOVERING PLATINUM FROM WASTE CATALYST
Document Type and Number:
Japanese Patent JP3550528
Kind Code:
B2
Abstract:

PROBLEM TO BE SOLVED: To provide a method for efficiently recovering platinum at the time of recovering platinum as valuables from an automotive waste catalyst.
SOLUTION: As to this method for recovering platinum, an automotive waste catalyst is subjected to two stage leaching. In the first leaching, the waste catalyst is leached with strong sulfuric acid to selectively separate impurities.


Inventors:
Toshifumi Ishii
Application Number:
JP2000154246A
Publication Date:
August 04, 2004
Filing Date:
May 25, 2000
Export Citation:
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Assignee:
Nikko Metal Co., Ltd.
International Classes:
C22B1/00; C22B7/00; C22B11/00; C22B21/00; C22B59/00; B09B3/00; (IPC1-7): C22B11/00; B09B3/00; C22B1/00; C22B7/00
Domestic Patent References:
JP37006109B1