Phosphoric acid manufacture from phosphate matrix

Details Phosphoric acid manufacture from phosphate matrix Phosphoric acid manufacture from phosphate matrix

1977-05-05

1978-08-08

Vertiz, O. R.

Chemistry of inorganic compounds

Phosphorus or compound thereof

Oxygen containing

423305, 423308, 423319, C01B 2516

Patent

active

041057490

ABSTRACT:
Phosphate ora matrix is treated to recover P.sub.2 O.sub.5 values. The matrix may be the phosphate ore as it is mined, or it may be residue formed upon dewatering benefication slimes. Without being subjected to beneficiation, this matrix is slurried with an organic solvent in a slurry vessel. When the slurry is mixed with a strong mineral acid, a system having a single liquid phase is formed with the organic solvent serving as a vehicle for distribution of the mineral acid which in turn solubilizes P.sub.2 O.sub.5 values for their extraction from the matrix. Thereafter the P.sub.2 O.sub.5 values are separated from the solid phase and then removed from the organic solvent.

REFERENCES:
patent: 1929441 (1933-10-01), Milligan
patent: 1929443 (1933-10-01), Milligan

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