Method for recovery of actinides from actinide-bearing scrap and waste nuclear material using O/sub 2/F/sub 2/

Asprey, L B; Eller, P G

Title: Method for recovery of actinides from actinide-bearing scrap and waste nuclear material using O/sub 2/F/sub 2/

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Abstract

Method for recovery of actinides from nuclear waste material containing sintered and other oxides thereof and from scrap materials containing the metal actinides using O/sub 2/F/sub 2/ to generate the hexafluorides of the actinides present therein. The fluorinating agent, O/sub 2/F/sub 2/, has been observed to perform the above-described tasks at sufficiently low temperatures that there is virtually no damage to the containment vessels. Moreover, the resulting actinide hexafluorides are not detroyed by high temperature reactions with the walls of the reaction vessel. Dioxygen difluoride is readily prepared, stored and transferred to the place of reaction.

Inventors:: Asprey, L B; Eller, P G

Issue Date:: 1984-09-12

Research Org.:: Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

OSTI Identifier:: 5808097

Application Number:: ON: DE85011587

Assignee:: Dept. of Energy

DOE Contract Number:: W-7405-ENG-36

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: 12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; 11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; ACTINIDES; RECOVERY; RADIOACTIVE WASTES; BY-PRODUCTS; FEASIBILITY STUDIES; FLUORINATION; FLUORINE OXIDES; PLUTONIUM; PLUTONIUM FLUORIDES; RADIOACTIVE WASTE PROCESSING; SINTERED MATERIALS; ACTINIDE COMPOUNDS; CHALCOGENIDES; CHEMICAL REACTIONS; ELEMENTS; FLUORIDES; FLUORINE COMPOUNDS; HALIDES; HALOGEN COMPOUNDS; HALOGENATION; MANAGEMENT; MATERIALS; METALS; OXIDES; OXYGEN COMPOUNDS; PLUTONIUM COMPOUNDS; PROCESSING; RADIOACTIVE MATERIALS; TRANSURANIUM COMPOUNDS; TRANSURANIUM ELEMENTS; WASTE MANAGEMENT; WASTE PROCESSING; WASTES; 052001* - Nuclear Fuels- Waste Processing; 050600 - Nuclear Fuels- By-Products- (-1987)

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                    Asprey, L B, and Eller, P G. Method for recovery of actinides from actinide-bearing scrap and waste nuclear material using O/sub 2/F/sub 2/.  United States: N. p., 1984. 
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                    Asprey, L B, & Eller, P G. Method for recovery of actinides from actinide-bearing scrap and waste nuclear material using O/sub 2/F/sub 2/.  United States.

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                    Asprey, L B, and Eller, P G. Wed .  
        "Method for recovery of actinides from actinide-bearing scrap and waste nuclear material using O/sub 2/F/sub 2/".  United States.

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@article{osti_5808097,

  title        = {Method for recovery of actinides from actinide-bearing scrap and waste nuclear material using O/sub 2/F/sub 2/},

  author       = {Asprey, L B and Eller, P G},

  abstractNote = {Method for recovery of actinides from nuclear waste material containing sintered and other oxides thereof and from scrap materials containing the metal actinides using O/sub 2/F/sub 2/ to generate the hexafluorides of the actinides present therein. The fluorinating agent, O/sub 2/F/sub 2/, has been observed to perform the above-described tasks at sufficiently low temperatures that there is virtually no damage to the containment vessels. Moreover, the resulting actinide hexafluorides are not detroyed by high temperature reactions with the walls of the reaction vessel. Dioxygen difluoride is readily prepared, stored and transferred to the place of reaction.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1984},

  month        = {9}

}

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Method for fluorination of actinide fluorides and oxyfluorides thereof using O[sub 2]F[sub 2]

Patent Eller, P G; Malm, J G; Penneman, R A

Method is described for fluorination of actinides and fluorides and oxyfluorides thereof using O[sub 2]F[sub 2] which generates actinide hexafluorides, and for removal of actinides and compounds thereof from surfaces upon which they appear as unwanted deposits. The fluorinating agent, O[sub 2]F[sub 2], has been observed to readily perform the above-described tasks at sufficiently low temperatures that there is virtually no damage to the containment vessels. Moreover, the resulting actinide hexafluorides are thereby not destroyed by high temperature reactions with the walls of the reaction vessel. Dioxygen difluoride is easily prepared, stored and transferred to the desired place of reaction.
Method for fluorination of actinide fluorides and oxyfluorides using O/sub 2/F/sub 2/

Patent Eller, P G; Malm, J G; Penneman, R A

The present invention relates generally to methods of fluorination and more particularly to the use of O/sub 2/F/sub 2/ for the preparation of actinide hexafluorides, and for the extraction of deposited actinides and fluorides and oxyfluorides thereof from reaction vessels. The experiments set forth hereinabove demonstrate that the room temperature or below use of O/sub 2/F/sub 2/ will be highly beneficial for the preparation of pure actinide hexafluorides from their respective tetrafluorides without traces of HF being present as occurs using other fluorinating agents: and decontamination of equipment previously exposed to actinides: e.g., walls, feed lines, etc.
Method for recovery of actinides from refractory oxides thereof using O.sub. F.sub.2

Patent Asprey, Larned B [Los Alamos, NM]; Eller, Phillip G [Los Alamos, NM]

Method for recovery of actinides from nuclear waste material containing sintered and other oxides thereof using O.sub.2 F.sub.2 to generate the hexafluorides of the actinides present therein. The fluorinating agent, O.sub.2 F.sub.2, has been observed to perform the above-described tasks at sufficiently low temperatures that there is virtually no damage to the containment vessels. Moreover, the resulting actinide hexafluorides are not destroyed by high temperature reactions with the walls of the reaction vessel. Dioxygen difluoride is readily prepared, stored and transferred to the place of reaction.
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