Title:
MUTUAL SEPARATION METHOD FOR PLATINUM GROUP ELEMENT
Document Type and Number:
Japanese Patent JP3741117
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a method for effectively separating impurity elements and mutually separating palladium, platinum, iridium, ruthenium and rhodium with purity to commercially produce them by preventing the increase of the content ratios of the impurity elements to the platinum group elements in a mother liquid by using highly safe compounds and processes in the method for mutually separating the platinum group elements.
SOLUTION: The mutual separation method for the platinum group elements includes: a first process of subjecting a platinum group element-containing material including the impurity elements to leaching; a second process of extracting the impurity elements by a solvent from the liquid generated by the leaching; a third process of extracting the palladium by a solvent from a leaching residue; a fourth processing of extracting the cation type impurities by a solvent from the leaching residue; a fifth process of separating the platinum by hydrolyzing the leaching residue; a sixth process of separating the ruthenium by leaching from the precipitate; and a seventh process of extracting the iridium by a solvent and obtaining the liquid generated by the reverse leaching and containing the iridium and the leaching residue containing the rhodium.
Inventors:
Satoshi Asano
Shinichi Hegori
Yoshiaki Manabe
Masashi Kasai
Kurokawa Harumasa
Shinichi Hegori
Yoshiaki Manabe
Masashi Kasai
Kurokawa Harumasa
Application Number:
JP2003334797A
Publication Date:
February 01, 2006
Filing Date:
September 26, 2003
Export Citation:
Assignee:
Sumitomo Metal Mining Co., Ltd.
International Classes:
C22B11/00; B01D11/04; C01G55/00; C22B3/10; C22B3/26; C22B3/38; C22B3/44; C22B11/06; (IPC1-7): C22B11/00; C22B3/26; C22B3/44
Domestic Patent References:
| JP4945822A | ||||
| JP57079135A | ||||
| JP10265863A | ||||
| JP8209259A | ||||
| JP2003013151A | ||||
| JP2003201526A |
Attorney, Agent or Firm:
Kenji Kawabi