Phosphoric acid manufacture from phosphate matrix

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

C - Chemistry, Metallurgy

01

B

23/384, 23/60

C01B 25/12 (2006.01) B01J 8/20 (2006.01) C01B 25/46 (2006.01)

Patent

CA 1085581

Abstract of the Disclosure Phosphate ore matrix is treated to recover P2O5 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 P2O5 values for their extraction from the matrix. Thereafter the P2O5 values are separated from the solid phase and then removed from the organic solvent.

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