Phosphoric acid production

Details Phosphoric acid production Phosphoric acid production

1977-08-15

1979-01-23

Vertiz, O. R.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Alkaline earth metal

423167, 423319, C01F 1146, C01B 2516

Patent

active

041361512

ABSTRACT:
The filtration rate and/or washability of crystals of gypsum produced during the wet process for the production of phosphoric acid are improved by adjusting the notional Al.sub.2 O.sub.3 :P.sub.2 O.sub.5 and reactive SiO.sub.2 :F ratios of the phosphate rock to within certain ranges. The adjustment may be achieved by addition of sources of aluminium and silica to the phosphoric acid process.

REFERENCES:
patent: 3562769 (1971-02-01), Sugahara et al.
Slack, Phosphoric Acid, part I, Marcel Dekker, Inc., New York (1968) , pp. 102-105.

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