Process for the manufacture of wet process phosphoric acid using

Details Process for the manufacture of wet process phosphoric acid using Process for the manufacture of wet process phosphoric acid using

1975-07-21

1977-08-23

Vertiz, O. R.

Chemistry of inorganic compounds

Phosphorus or compound thereof

Oxygen containing

241 21, 423167, C01B 2516

Patent

active

040441075

ABSTRACT:
Wet process phosphoric acid is made by grinding phosphate rock as a slurry in water, and digesting the ground rock slurry with sulfuric acid which has been diluted by spent calcium sulfate wash water before being combined with the ground slurry.

REFERENCES:
patent: 114693 (1871-05-01), Lewis
patent: 1667549 (1928-04-01), Heckenbleikner
patent: 2710247 (1955-06-01), Knowles et al.
patent: 3017247 (1902-01-01), Huxley
patent: 3117733 (1964-01-01), Cleeman
patent: 3192014 (1965-06-01), Leyshon et al.
patent: 3204877 (1965-09-01), Barr et al.
patent: 3231331 (1966-01-01), Robinson
patent: 3257168 (1966-06-01), Chelminski
patent: 3594123 (1971-07-01), Enck et al.
patent: 3653827 (1972-04-01), Hey et al.
Phosphoric Acid Slack, 1969, 187, 183, 200, 201.

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