Title:
【発明の名称】ジチオリン金属抽出剤の水素フリー再生
Document Type and Number:
Japanese Patent JP2002531708
Kind Code:
A
Abstract:
This is a method of regenerating dithiophosphorus acids from disulfides containing sulfur-sulfur bonds, formed by oxidation of dithiophosphorus acids, such as sulfur-sulfur bonding of dithiophosphoric, dithiophosphonic and dithiophosphinic acids, in a solvent extraction organic phase in which the dithiophosphorus acid is dissolved in a diluent. This process reacts metal directly with the organic solution containing the disulfide to produce a metal loaded complex form of the regenerated dithiophosphorus extractant in the organic solution. This metal complex forms by direct reaction of the metal with the disulfides without requiring the presence or the formation of nascent or gaseous hydrogen. The organic solution containing the regenerated dithiophosphorus extractant can be either directly recycled into a solvent extraction circuit or recycled after the loaded metal is stripped.
Inventors:
Jean-Jacques, Robert, Perrault
Dennis, Frederick, Colton
Jean, Paul and Duterk
Okita, Yoshiaki
Dennis, Frederick, Colton
Jean, Paul and Duterk
Okita, Yoshiaki
Application Number:
JP2000586969A
Publication Date:
September 24, 2002
Filing Date:
August 11, 1999
Export Citation:
Assignee:
COMPAGNIE DES MINES DE XERE
Psytech Technology Corporation
Psytech Technology Corporation
International Classes:
C22B3/26; C07F9/02; C07F9/165; (IPC1-7): C22B3/26
Attorney, Agent or Firm:
Kazuo Sato (3 others)