Cleanup of wet process phosphoric acid

Details Cleanup of wet process phosphoric acid Cleanup of wet process phosphoric acid

1975-08-14

1976-11-23

Vertiz, Oscar R.

Chemistry of inorganic compounds

Phosphorus or compound thereof

Oxygen containing

C01B 2516

Patent

active

039937356

ABSTRACT:
A method for purifying a crude or wet process phosphoric acid to a technical grade phosphoric acid comprising a sequence of steps including diluting the crude phosphoric acid, contacting the crude phosphoric acid with activated carbon, neutralization of the acid to a phosphate salt solution, contacting the phosphate salt solution with activated carbon and reconversion to a purified technical grade phosphoric acid.

REFERENCES:
patent: 1981145 (1934-11-01), Keller
patent: 2044940 (1936-06-01), Haog et al.
patent: 3645682 (1972-02-01), Cochran
patent: 3872215 (1975-03-01), Cherdron et al.
Ionics Bulletin, L-2, p. 3.

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