Process for the extraction of metal values and novel metal extra

Details Process for the extraction of metal values and novel metal extra Process for the extraction of metal values and novel metal extra

1983-10-12

1986-03-18

Doll, John

Chemistry of inorganic compounds

Extracting, leaching, or dissolving

423 24, 423100, 423139, 75101BE, 75117, 544224, 544225, B01D 1100

Patent

active

045768153

ABSTRACT:
Metal values are extracted from aqueous solutions of metal salts containing halide or pseudo halide ions by pyrimidine, pyrazine or pyridazine derivatives bearing the substituent --(C.dbd.O.X).sub.n 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 1 to 36 carbon atoms and R.sub.2 and R.sub.2 together contain from 1 to 36 carbon atoms. The molecule as a whole contains from 5 to 36 alkyl carbon atoms and may carry further optional substituents. The process is especially useful for the recovery of metals from leach solutions derived from sulphur-containing ores.

REFERENCES:
patent: 3086973 (1963-04-01), Nyholm
R. Urban and O. Schnider, Helv. Chim. Acta, 41 1806 (1958) (see in particular pp. 1808 and 1813).
E. F. Godefroi, J. Org. Chem., 27 2264 (1962).

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