Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Group iiia metal or beryllium
Patent
1979-02-16
1980-11-11
Carter, Herbert T.
Chemistry of inorganic compounds
Treating mixture to obtain metal containing compound
Group iiia metal or beryllium
423 24, 423 49, 423139, 423157, 75101BE, C01F 700, C01G 4900
Patent
active
042332737
ABSTRACT:
A method is provided for extracting at least one of the trivalent ions Fe and Al from an acid solution. The method comprises uniformly mixing the acid solution with a liquid organic extractant comprising an organophosphorus compound and an alkylaromatic sulfonic acid dissolved in a water-immiscible organic solvent, the extractant being selective to the solvent extraction of said trivalent ions under acidic conditions. The molar ratio of the sulfonic acid to the organophosphorus compound is controlled over a range of about 1:4 to 10:1 and the mixing carried out for a time sufficient to effect solvent extraction of said trivalent ions and provide a raffinate substantially impoverished in said trivalent ions and a loaded extractant containing said trivalent ions, following which the loaded extractant is separated from the raffinate.
REFERENCES:
patent: 3586481 (1971-06-01), Hyde et al.
patent: 3875285 (1975-04-01), Nyman et al.
patent: 4032613 (1977-06-01), Shultze et al.
Sato et al, "Proceedings of the International Solvent Extraction Conference, 1971", Paper 98, vol. 1, Soc. of Chemical Industry, London, 1971.
Blake et al, "Proceedings of International Conference on Peaceful Uses of Atomic Energy", vol. 28, 1958, pp. 289-298.
van Dalen et al, "Proceedings of the International Solvent Extraction Conference, 1971", Paper 84, vol. II, Soc. of Chemical Industry, London, 1971.
Fekete Simon O.
Meyer Gustavo A.
Wicker Gordon R.
Amax Inc.
Carter Herbert T.
Ciomek Michael A.
Kalil Eugene J.
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