Method for the production of phosphoric acid with high contents

Details Method for the production of phosphoric acid with high contents Method for the production of phosphoric acid with high contents

1976-07-06

1979-12-04

Spitzer, Robert H.

Chemistry: fertilizers

Processes and products

Inorganic material

71 39, 71 40, 423319, 423320, C05B 1106

Patent

active

041770536

ABSTRACT:
Phosphoric acid with a high fertilizer-nutrient content is produced by decomposing phosphate rock with nitric acid followed by precipitation of calcium ions with sulfate. The steps of the process are as follows:

REFERENCES:
patent: 3429686 (1969-02-01), Dingemans et al.
patent: 3475153 (1969-10-01), Abbott et al.
patent: 3515534 (1970-06-01), Livingston
patent: 3600154 (1971-08-01), Slot et al.
patent: 3632307 (1972-01-01), Van Es
patent: 3690826 (1972-09-01), Husken
patent: 3729304 (1973-04-01), Elmendorp et al.
patent: 3835215 (1972-09-01), Marquis et al.
Phosphoric Acid, vol. 1, part 1, A. V. Slack, pp. 290 and 334.
Phosphoric Acid, vol. 1, part 1, A. V. Slack, 1968, pp. 279-282, 332-336, 350-355, 373-377.

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