Recovery of fluorine, uranium and rare earth metal values...

Details Recovery of fluorine, uranium and rare earth metal values... Recovery of fluorine, uranium and rare earth metal values...

C - Chemistry, Metallurgy

01

B

53/162, 53/212,

C01B 7/20 (2006.01) C22B 59/00 (2006.01) C22B 60/02 (2006.01)

Patent

CA 1065122

ABSTRACT OF THE DISCLOSURE 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.

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