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Title:
白金の回収処理方法
Document Type and Number:
Japanese Patent JP5408412
Kind Code:
B2
Abstract:

To provide a method of easily recovering platinum metal having only little impurities by a simple treatment operation without using a special chemical agent.

The method of recovering the platinum includes: precipitating ammonium chloroplatinic acid by adding ammonium chloride to a platinum-containing solution; recovering the precipitate and dissolving the precipitate into hydrochloric acid acidic hot water; precipitating platinum thiourea complex by adding the thiourea into this solution; and recovering and calcinating the precipitate to recover the platinum powder. Preferably, the method for recovering the platinum includes: after repeating a process of adding the ammonium chloride to the platinum-containing solution and precipitating the ammonium chloroplatinic acid, recovering the precipitate and dissolving it into the hydrochloric acid acidic hot water, adding the thiourea to the solution, and precipitating the platinum thiourea complex.

COPYRIGHT: (C)2011,JPO&INPIT


Inventors:
Satoshi Shibata
Satoru Okada
Application Number:
JP2009069205A
Publication Date:
February 05, 2014
Filing Date:
March 20, 2009
Export Citation:
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Assignee:
Mitsubishi Materials Corporation
International Classes:
C22B11/00; B22F9/30; C22B3/44
Domestic Patent References:
JP9316560A
JP9241768A
JP2008038159A
Attorney, Agent or Firm:
Hiroshi Chiba