Title:
METHOD FOR SELECTIVELY EXTRACTING METAL FROM AQUEOUS SOLUTION USING DITHIOPHOSPHINIC ACID
Document Type and Number:
Japanese Patent JPS6227529
Kind Code:
A
Abstract:
A process for the extraction of metals selected from the group consisting of zinc (II), silver (I), cadmium (II), mercury (II), nickel (II), cobalt (II), and copper (II) from an aqueous solution containing, in addition to said metals, metals selected from the group consisting of calcium (11) and magnesium (II) is disclosed. The process comprises contacting the aqueous solution having an equilibrium pH within the range of about 0.2 to about 3 with an extractant. The extractant comprises an organic-soluble dithiophosphinic acid or ammonium, alkali or alkaline earth metal salt thereof represented by the formula:wherein R1 and R2 are the same or different and are selected from the group consisting of substituted or unsubstituted alkyl, cycloalkyl, alkoxyalkyl, alkylcycloalkyl, aryl, alkylaryl, aralkyl and cycloalkylaryl radicals having from about 2 to about 24 carbon atoms and X is either hydrogen or an ammonium, alkali or alkaline earth metal salt forming radical.
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Inventors:
CHIMOSHII JIEI BURAUN
UIRIAMU ANDORUU RITSUKERUTON
RICHIYAADO JIEI BOIRU
UIRIAMU ANDORUU RITSUKERUTON
RICHIYAADO JIEI BOIRU
Application Number:
JP17193686A
Publication Date:
February 05, 1987
Filing Date:
July 23, 1986
Export Citation:
Assignee:
AMERICAN CYANAMID CO
International Classes:
C22B3/00; B01D11/04; C01G3/00; C01G5/00; C01G9/00; C01G11/00; C01G13/00; C01G51/00; C01G53/00; C22B3/26; C22B3/38; C22B11/00; C22B17/00; C22B19/20; C22B23/00; C22B43/00; (IPC1-7): B01D11/04; C22B3/00; C22B11/04; C22B17/04; C22B19/20; C22B23/04; C22B43/00
Attorney, Agent or Firm:
Heikichi Odashima