Process for purifying phosphoric acid

Details Process for purifying phosphoric acid Process for purifying phosphoric acid

1979-10-12

1981-07-07

Vertiz, O. R.

Chemistry of inorganic compounds

Phosphorus or compound thereof

Oxygen containing

C01B 2516

Patent

active

042774551

ABSTRACT:
Wet process phosphoric acid is purified by extraction with a hexanone of pentanone to form an organic extract, containing phosphoric acid, from which the acid content is recovered by treatment with water or aqueous phosphoric acid in 2 or more portions to give 2 or more purified acids, the recovery to give the last purified acid being in more than 1 countercurrent stage.

REFERENCES:
patent: 1929442 (1933-10-01), Milligan
patent: 2885266 (1959-05-01), Victory
patent: 3914382 (1975-10-01), Williams
patent: 4127640 (1978-11-01), Williams
Haddad, "Wet Process Phosphoric Acid", S.R.I., 1966.
Chemical Engineers Handbook, 1950, pp. 714-718.

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