Process and extractant for removing fluorine compounds from aque

Details Process and extractant for removing fluorine compounds from aque Process and extractant for removing fluorine compounds from aque

1982-06-01

1984-03-27

Heller, Gregory A.

Chemistry of inorganic compounds

Phosphorus or compound thereof

Oxygen containing

423321R, 423462, 423501, C01B 2516, C01B 700

Patent

active

044394080

ABSTRACT:
The invention provides a process for removing fluorine compounds from aqus phosphoric acid containing the same, which process comprises contacting the phosphoric acid with a water insoluble extractant comprising phosphoric acid and an oil soluble amine, the amine being substantially water insoluble both in free and in salt form and the extractant being substantially free of fluorine, sulfate and metal impurities. The invention also provides an extractant for use in the above process comprising an oil soluble amine, which amine is substantially water insoluble both in free and in salt form and a phosphoric acid.

REFERENCES:
patent: 3367749 (1968-02-01), Koerner et al.
patent: 3458282 (1969-07-01), Koerner et al.
patent: 3972982 (1976-08-01), Centofanti
patent: 4024225 (1977-05-01), Chiang
patent: 4053564 (1977-10-01), Bradford et al.
patent: 4291007 (1981-09-01), Baniel

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