Chemistry: electrical and wave energy – Processes and products
Patent
1987-11-05
1989-11-14
Niebling, John F.
Chemistry: electrical and wave energy
Processes and products
204 64R, 204225, 204245, 204250, C25C 334
Patent
active
048805068
ABSTRACT:
An electrorefining process and apparatus for the recovery of uranium and a mixture of uranium and plutonium from spent fuel using an electrolytic cell having a lower molten cadmium pool containing spent nuclear fuel, an intermediate electrolyte pool, an anode basket containing spent fuel, and two cathodes, the first cathode composed of either a solid alloy or molten cadmium and the second cathode composed of molten cadmium. Using this cell, additional amounts of uranium and plutonium from the anode basket are dissolved in the lower molten cadmium pool, and then substantially pure uranium is electrolytically transported and deposited on the first alloy or molten cadmium cathode. Subsequently, a mixture of uranium and plutonium is electrotransported and deposited on the second molten cadmium cathode.
REFERENCES:
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patent: 4596647 (1986-06-01), Miller et al.
Burris et al., "The Application of Electrorefining for Recovery and Puriftion of Fuel Discharged from the Integral Fast Reactor", Nov. 1986, AICHE Symposium Series: No. 254, v83.
Martin et al., "The Cadmium-Uranium Phase Diagram", Transactions of the Metallurgical Society of AIME, vol. 22, pp. 789-791, Aug. 1961.
Johnson et al., "Thermodynamics of the Uranium-Cadmium System", Transactions of the Metallurgical Society AIME, vol. 224, pp. 468-473, Jun. 1962.
Johnson et al., "Pu-Cd System: Thermodynamics and Partial Phase Diagram", Transactions of the Metallurgical Society of AIME, vol. 233, pp. 1408-1414, Jul. 1965.
Steunenberg et al., "Preluminary Flowsheet for the Pyroprocessing of Recycled IFR Core Fuel Blanket Material and Wastes", IFR Technical Memorandum, No. 46, Jul. 1986.
Ackerman John P.
Miller William E.
Anderson Thomas G.
Gorgos Kathryn
Hightower Judson R.
Niebling John F.
The United States of America as represented by the Department of
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