Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Radioactive metal
Patent
1985-08-05
1988-04-26
Miller, Edward A.
Chemistry of inorganic compounds
Treating mixture to obtain metal containing compound
Radioactive metal
423 2, 423 17, C01G 4300
Patent
active
047403594
ABSTRACT:
An organic extraction phase, containing fission materials uranium and plutonium, as well as a minor amount of fission- and corrosion-products, from an extraction step or from a purification step of a nuclear fuel reprocessing process is treated with an aqueous, basic, carbonate ion containing solution, whereby the fission materials and at least a part of the fission- and corrosion-products are stripped into the aqueous phase and the uranium is present in the form of uranium-carbonato-complex. The organic phase is then separated from the aqueous phase. Plutonium is then removed from the separated aqueous phase. The remaining aqueous solution containing the uranium-carbonato-complex and a small residual amount (C) of fission products is adjusted to a ratio of uranyl ion concentration to carbonate ion- or CO.sub.3.sup.-- /HCO.sub.3.sup.-- concentration of 1(UO.sub.2.sup.++) to 4.5(CO.sub.3.sup.-- or CO.sub.3.sup.-- /HNO.sub.3.sup.-), respectively, or more, at a maximum U-concentration of not more than 6- g/l. The adjusted solution is then led over a basic anion exchanger made from a polyalkene matrix provided with a preponderant part tertiary and a minor part quaternary amino groups to adsorb fission product ions or fission products containing ions. The unadsorbed uranyl-carbonato complex which is now decontaminated, and preponderantly fission product free is recovered by separating the uranium containing, remaining aqueous solution from the ion exchanger.
REFERENCES:
patent: 2811412 (1957-10-01), Poirier
patent: 3155455 (1964-11-01), Hart
patent: 3835044 (1974-09-01), Schulz
patent: 3864667 (1958-12-01), Bailes et al.
patent: 3922231 (1975-11-01), Carlin et al.
patent: 4280985 (1981-07-01), Yan
patent: 4460547 (1984-07-01), Sameh et al.
Haag Juergen
Hadi Ali Sameh A.
Kernforschungszentrum Karlsruhe GmbH
Miller Edward A.
LandOfFree
Process for the recovery of uranium values in an extractive repr does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for the recovery of uranium values in an extractive repr, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the recovery of uranium values in an extractive repr will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-818616