Title:
METHOD FOR REMOVING IMPURITY FROM SOLVENT EXTRACTION SOLUTION
Document Type and Number:
Japanese Patent JP2004107791
Kind Code:
A
Abstract:
To regenerate an amine used to solvent extraction for recovery of metals without using caustic reagents and complicated filtering steps.
A liquid organic phase containing an amine complexed with one or more metals is brought into contact with an aqueous solution substantially free of chloride ions to strip the one or more metals from the organic phase. The stripped organic phase is then brought into contact with a solution of hydrochloric acid to regenerate the amine extractant.
Inventors:
PERRAUD JEAN-JACQUES ROBERT (FR)
Application Number:
JP2003197982A
Publication Date:
April 08, 2004
Filing Date:
July 16, 2003
Export Citation:
Assignee:
GORO NICKEL SA (FR)
International Classes:
B01D11/04; B01J20/34; C01G9/00; C01G49/00; C01G51/00; C01G53/00; C22B3/16; C22B3/26; C22B3/28; C22B19/00; C22B19/20; C22B23/00; (IPC1-7): C22B3/26; B01D11/04; C22B19/00; C22B23/00
Attorney, Agent or Firm:
Kenji Yoshitake
Yukitaka Nakamura
Konno Akio
Noritaka Yokota
Masaharu Takamura
Yukitaka Nakamura
Konno Akio
Noritaka Yokota
Masaharu Takamura