Process for the preparation of phosphoric acid

Details Process for the preparation of phosphoric acid Process for the preparation of phosphoric acid

1973-07-02

1976-01-27

Vertiz, Oscar R.

Chemistry of inorganic compounds

Phosphorus or compound thereof

Oxygen containing

423167, C01B 2516

Patent

active

039352986

ABSTRACT:
When phosphate rock and sulfuric acid are mixed under such conditions that gypsum dihydrate is stably formed and sulfuric acid is added to the phosphate rock in an amount not exceeding the amount equivalent to a calcium component in the phosphate rock, small masses of the reaction product between the phosphate rock and sulfuric acid can be maintained in the non-disintegrable form throughout extraction of phosphoric acid from said reaction product, and phosphoric acid can be extracted from such reaction product at a high rate in a good yield.

REFERENCES:
patent: 1929441 (1933-10-01), Milligan
patent: 2384813 (1945-09-01), Coleman
patent: 2384814 (1945-09-01), Coleman
patent: 2504544 (1950-04-01), Legal et al.
patent: 2954287 (1960-09-01), Carothers et al.
patent: 3003852 (1961-10-01), Nordengren
patent: 3161467 (1964-12-01), Hignett et al.
patent: 3562769 (1971-02-01), Sugahara et al.
patent: 3627485 (1971-12-01), Hori et al.

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