Purification of phosphoric acid by solvent extraction using hexa

Details Purification of phosphoric acid by solvent extraction using hexa Purification of phosphoric acid by solvent extraction using hexa

1976-08-23

1978-11-28

Vertiz, O. R.

Chemistry of inorganic compounds

Phosphorus or compound thereof

Oxygen containing

423309, C01B 2516

Patent

active

041276400

ABSTRACT:
Wet process phosphoric acid may be purified by solvent extraction to produce a product of greater purity and concentration than has hitherto been attainable by employing an acyclic hexanone, preferably methyl isobutyl ketone as the solvent. Preferably the extraction of the acid into the ketone and the release into water are carried out in 2 actual or theoretical counter-current stages. Alternatively the release may be carried out into an aqueous solution of a base.

REFERENCES:
patent: 1929442 (1933-10-01), Milligen
patent: 2885265 (1959-05-01), Cunningham
patent: 3338674 (1967-08-01), Baniel
patent: 3367738 (1968-02-01), Schallert
patent: 3433592 (1969-03-01), Baniel
patent: 3438746 (1969-04-01), Cousseians
patent: 3556739 (1971-01-01), Baniel et al.
patent: 3707357 (1972-12-01), Chiavej
patent: 3914382 (1975-10-01), Williams
Journal Chem. & Engr. Data-4/68-vol. 13, #2-pp. 194-196.
Salnet Extraction Reviews-1971-vol. 1-pp. 96-100.

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