Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Patent
1985-03-27
1988-10-04
Lee, Mary C.
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
546 2, 546287, 546288, 546289, 546291, 546308, 546309, 546316, 546318, 546321, 546322, 546323, C07D21384, C07D21381, C07D21382
Patent
active
047757639
ABSTRACT:
Metal values are extracted from aqueous solutions of metal salts containing halide or pseudo halide ions by pyridine derivatives containing the substituent --(COX).sub.A where X is the group --OR.sub.1 or --NR.sub.2 R.sub.3 and n is 1, 2 or 3. R.sub.1 is a hydrocarbyl group containing from 5 to 36 carbon atoms and R.sub.2 and R.sub.3 are hydrogen or a hydrocarbyl group wherein R.sub.2 and R.sub.3 together contain from 5 to 36 carbon atoms. The process is especially useful for the recovery of metals from leach solutions derived from sulphur-containing ores such as chalcopyrite.
REFERENCES:
patent: 2483250 (1949-09-01), Suter
patent: 4390437 (1983-06-01), Lee et al.
Chemical Abstracts, 1603d, (1963).
Grinstead, R. R., Int. Solvent, Extr. Conf. [Proc.] 1986, 3, Paper 80-170, 10 pages.
Chemical Abstracts, 94:145966v.
Dalton Raymond F.
Price Raymond
Quan Peter M.
Stewart David
Bjorkman Dale A.
Imperial Chemical Industries
Lee Mary C.
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