Method of producing phosphoric acid from high iron and aluminum

Details Method of producing phosphoric acid from high iron and aluminum Method of producing phosphoric acid from high iron and aluminum

1975-07-17

1977-08-02

Vertiz, O. R.

Chemistry of inorganic compounds

Phosphorus or compound thereof

Oxygen containing

423321R, 423167, C01B 2516

Patent

active

040396240

ABSTRACT:
This invention concerns the solubilization of phosphate values in phosphate bearing rock which contains high contents of aluminium and/or iron by attacking the phosphate rock with a nitric acid leach solution for a time suitable to produce a phosphate rich leach solution containing no more than 10 parts Fe and Al in solution calculated as R.sub.2 O.sub.3 per 100 parts of P.sub.2 O.sub.5 in solution.

REFERENCES:
patent: 1816285 (1931-07-01), Johnson
patent: 1976283 (1934-10-01), Johnson
patent: 2114600 (1938-04-01), Larsson
patent: 2252280 (1941-08-01), Balz et al.
patent: 3472616 (1969-10-01), Hauge
patent: 3919395 (1975-10-01), Hauge

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