Recovery of fluorine, uranium and rare earth metal values from p

Details Recovery of fluorine, uranium and rare earth metal values from p Recovery of fluorine, uranium and rare earth metal values from p

1974-02-21

1976-02-10

Padgett, Benjamin R.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Radioactive metal

423 11, 423 18, 423 21, 423167, 423319, 423321S, B01D 1104, C01G 5600

Patent

active

039377830

ABSTRACT:
A method for recovering substantially all of the fluorine and uranium values and at least 90 percent of the rare earth metal values from brine raffinate obtained as by-product in the production of phosphoric acid by the hydrochloric acid decomposition of tricalcium phosphate minerals. A basically reacting compound is added to the brine raffinate to effect a pH of at least about 9, whereby fluorine, uranium and rare earth metal values are simultaneously precipitated therefrom. These values may then be separately recovered from the precipitate by known processes.

REFERENCES:
patent: 2797143 (1957-06-01), Arendale et al.
patent: 2859092 (1958-11-01), Bailes et al.
patent: 2869979 (1959-01-01), Grinstead
patent: 2926992 (1960-07-01), Stedman
patent: 3338674 (1967-08-01), Daniel et al.
patent: 3790658 (1974-02-01), Fox et al.
patent: 3842155 (1974-10-01), Muller et al.

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