Pyridine dicarboxylic ester metal extractants

Details Pyridine dicarboxylic ester metal extractants Pyridine dicarboxylic ester metal extractants

1985-02-19

1987-07-28

Jiles, Henry R.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

546 8, C07D21380

Patent

active

046833102

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: 2809197 (1957-10-01), Kruse
patent: 4552632 (1985-11-01), Andersen et al.

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