Chemistry of inorganic compounds – Phosphorus or compound thereof – Oxygen containing
Patent
1980-05-19
1982-01-19
Vertiz, O. R.
Chemistry of inorganic compounds
Phosphorus or compound thereof
Oxygen containing
C01B 2516
Patent
active
043116817
ABSTRACT:
Organic phosphate solvents used in the extraction of phosphoric acid from impure phosphoric acid solutions, and from which the phosphoric acid has been stripped, are washed with an aqueous alkali orthophosphate solution to remove impurities, particularly silica, fluorine and organic impurities, from the solvent prior to re-use.
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Chiang John S. C.
Moore William S.
FMC Corporation
Heller Gregory A.
Ianno Frank
Mueller George F.
Vertiz O. R.
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