Process for blending phosphoric acids of differing impurity cont

Details Process for blending phosphoric acids of differing impurity cont Process for blending phosphoric acids of differing impurity cont

1980-12-05

1983-03-15

Vertiz, O. R.

Chemistry of inorganic compounds

Phosphorus or compound thereof

Oxygen containing

423319, 423320, 423321R, C01B 2516

Patent

active

043767567

ABSTRACT:
Phosphoric acids of significantly different content of soluble impurities, especially magnesium compounds, can be blended to produce a phosphoric acid with a decreased tendency for forming detrimental solids when converted to a liquid fertilizer or on storage, or during transportation as when the acid is transported by ocean vessel or railroad tank car. The blending can be effected either before or after a concentration step or steps (e.g., evaporation to "merchant grade" or to superphosphoric acid). For example, wet process phosphoric acid produced by a dihydrate or gypsum process can be blended with a phosphoric acid produced by a hemihydrate process.

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Slack, Phosphoric Acid, vol. II, pp. 639, 642-645, 650, 651 (1968).

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