Water-insoluble chelate exchange resins from aminopyridines and

Details Water-insoluble chelate exchange resins from aminopyridines and Water-insoluble chelate exchange resins from aminopyridines and

1977-03-25

1978-07-04

Schofer, Joseph L.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group ib metal

423 22, 423 54, 423 63, 423100, 423139, 521 32, B01D 1504, B01J 104

Patent

active

040988678

ABSTRACT:
New chelate exchange resins capable of selective recovery of copper, nickel, and other valuable metals from an acidic aqueous leach liquor are prepared by reacting a crosslinked haloalkyl polymer matrix resin (I) with certain aminopyridines (II) to give a resin (III) ##STR1## with pendent methyleneaminopyridine groups attached to the matrix resin. Particularly useful resins are obtained by reacting chloromethylated styrene-divinylbenzene copolymer beads with an aminomethylpyridine, such as 2-picolylamine, N-methyl-2-picolylamine, N-(2-hydroxyethyl)-2-picolylamine, N-(2-methylaminoethyl)-2-picolylamine, or bis-(2-picolyl)amine. At a typical copper ore leach liquor pH of about 2, the picolylamine resins will absorb 15-30 mg copper/ml resin with a 5-10 fold selectivity for copper over ferric iron.

REFERENCES:
patent: 2875162 (1959-02-01), Morris
patent: 2980607 (1961-04-01), Mock
patent: 3873668 (1975-03-01), Melby
patent: 3998924 (1976-12-01), Jones
Journal of the Amer. Chem. Society, vol. 82, pp. 5013-5023 (1960), Goodwin et al.
Inorganic Chem., vol. 7, pp. 495-501 (1968), Gruenwedel.
"Ion Exchange", Wheaton-Hatch, J. H. Marinsky, ed., New York 1969, vol. II Chapter 6, pp. 219-222, pp. 194-195.

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