Process for the purification of wet phosphoric acid

Details Process for the purification of wet phosphoric acid Process for the purification of wet phosphoric acid

1979-08-13

1982-02-16

Vertiz, O. R.

Chemistry of inorganic compounds

Phosphorus or compound thereof

Oxygen containing

423321S, 423341, 423483, C01B 2516

Patent

active

043158994

ABSTRACT:
Raw wet phosphoric acid which has been extracted from the solvent and regenerated with water according to the process of U.S. Pat. No. 3,607,029 is subsequently subjected to treatment with steam or a hot gas to afford concentrated phosphoric acid with a F/P.sub.2 O.sub.5 ratio of less than 10 ppm. The acid obtained is suitable for use in the food industry.

REFERENCES:
patent: 3607029 (1971-09-01), Goret et al.
patent: 4083937 (1978-04-01), Toshinitsu et al.

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