Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Group ib metal
Patent
1985-07-24
1988-01-26
Stoll, Robert L.
Chemistry of inorganic compounds
Treating mixture to obtain metal containing compound
Group ib metal
423100, 423139, 423157, 423DIG14, 75101BE, 75117, 75118R, 75119, 75120, 75121, 210684, 210685, 210687, C01G 300, C01G 5100, C01G 5300
Patent
active
047216050
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 (II) 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: ##STR1## wherein R.sup.1 and R.sup.2 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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Boyle Richard J.
Brown Timothy J.
Rickelton William A.
American Cyanamid Company
Jeanette Henry C.
Kelly Michael J.
Stoll Robert L.
Van Riet Frank M.
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