Purification of wet-processed phosphoric acid using anhydrous so

Details Purification of wet-processed phosphoric acid using anhydrous so Purification of wet-processed phosphoric acid using anhydrous so

1974-04-24

1976-04-27

Vertiz, Oscar R.

Chemistry of inorganic compounds

Phosphorus or compound thereof

Oxygen containing

C01B 2516

Patent

active

039535819

ABSTRACT:
Contaminated wet-processed phosphoric acid is purified. To this end, the wet-processed phosphoric acid is mixed with one or more organic solvents, in which water is partially soluble, the organic solvent(s) is (are) separated from unabsorbed wet-processed phosphoric acid portions, and phosphoric acid is recovered from the organic solvent(s) so separated. The organic solvent(s) are more particularly used in the form of anhydrous material and at least in the quantity necessary to ensure dissolution (a) of the overall quantity of phosphoric acid contained in the wet-processed phosphoric acid and (b) of the free water therein.

REFERENCES:
patent: 1929442 (1933-10-01), Milligan
patent: 3764657 (1973-10-01), Frankenfeld et al.

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