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Recovery of Strontium Values from Sulfate-Containing Waste Solutions.

PATENT3218123

Publication Date	1965
Personal Author	Davis, W.; Yee, W. C.
Page Count	0
Abstract	A method is described for recovering strontium values from a nitric acid fission product solution containing the same, together with sulfate ions and ions of at least one metal in the group consisting of iron, aluminum and chromium which comprises precipitating said strontium values as strontium nitrate at a nitric acid concentration of at least about 18 molar and separating the resulting precipitate from the remaining solution, the improvement which comprises adding a sufficient amoent of ferric ions to said solution to provide a stoichiometric excess for formation of ferric sulfate, increasing the nitric acid concentration of the resulting solution to about 55 to 60 weight percent whereby ferric sulfate is precipitated and separating the resulting precipitate from the remaining solution prior to precipitating said strontium nitrate.
Keywords	Radioactive waste Strontium Processing Separation Reactor fuel processing Sulfates Solutions Nitric acid Chemical precipitation Iron compounds Nitrates Patents
NTIS Subject Category	77G - Radioactive Wastes & Radioactivity
Supplemental Notes	Available from Commissioner of Patents, Washington, D.C., 20231, $0.50
Document Type	Patent
Title Note	Patent assigned to AEC.
NTIS Issue Number	196604

Recovery of Strontium Values from Sulfate-Containing Waste Solutions.

Recovery of Strontium Values from Sulfate-Containing Waste Solutions.
PATENT3218123

Publication Date	1965
Personal Author	Davis, W.; Yee, W. C.
Page Count	0
Abstract	A method is described for recovering strontium values from a nitric acid fission product solution containing the same, together with sulfate ions and ions of at least one metal in the group consisting of iron, aluminum and chromium which comprises precipitating said strontium values as strontium nitrate at a nitric acid concentration of at least about 18 molar and separating the resulting precipitate from the remaining solution, the improvement which comprises adding a sufficient amoent of ferric ions to said solution to provide a stoichiometric excess for formation of ferric sulfate, increasing the nitric acid concentration of the resulting solution to about 55 to 60 weight percent whereby ferric sulfate is precipitated and separating the resulting precipitate from the remaining solution prior to precipitating said strontium nitrate.
Keywords	Radioactive waste Strontium Processing Separation Reactor fuel processing Sulfates Solutions Nitric acid Chemical precipitation Iron compounds Nitrates Patents
NTIS Subject Category	77G - Radioactive Wastes & Radioactivity
Supplemental Notes	Available from Commissioner of Patents, Washington, D.C., 20231, $0.50
Document Type	Patent
Title Note	Patent assigned to AEC.
NTIS Issue Number	196604