Method of treating phosphoric acid to prevent crud formation dur

Details Method of treating phosphoric acid to prevent crud formation dur Method of treating phosphoric acid to prevent crud formation dur

1976-02-10

1980-06-10

Carter, Herbert T.

Chemistry of inorganic compounds

Phosphorus or compound thereof

Oxygen containing

423321R, 423319, 4236585, 423 8, C01B 2518

Patent

active

042073022

ABSTRACT:
A method for pretreating phosphoric acid to prevent the formation of a mass of suspended solids (i.e., "crud") during solvent extraction of the acid is described. Prior to solvent extraction, the acid is contacted with a liquid hydrocarbon such as kerosene which collects the crud-forming agents. The mixture of liquid hydrocarbon and collected crud-forming agents is separated from the acid and the liquid hydrocarbon is regenerated for reuse in the first step of the method.

REFERENCES:
patent: 3619161 (1971-11-01), Knarr et al.
patent: 3867511 (1975-02-01), Chiang et al.
Ind. Eng. Chem. Proc. Des. & Dev.-Recovery of Uranium from Wet Process Phosphoric Acid-Hurst et al., vol. 11#1, pp. 122-128.
Organic Chemistry-Morrison & Boyd, pp. 27-28-1966.
Phosphoric Acid-Slack-1968-pp. 665-668.

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