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Meeting 2016 TMS Annual Meeting & Exhibition
Symposium Rare Metal Extraction & Processing Symposium
Presentation Title Fluorination Behavior of Uranium and Zirconium Mixture for Fuel Debris Treatment
Author(s) Nobuaki Sato, Akira Kirishima, Tetsuo Fukasawa
On-Site Speaker (Planned) Nobuaki Sato
Abstract Scope To apply the fluoride volatility process for the treatment of fuel debris formed in the damaged nuclear reactors, study on the fluorination behavior of main constituents, such as fuel and cladding is essential. The mixture of uranium and zirconium oxides is formed under severe conditions such as high temperature and oxidizing atmospheres. In this paper, fluorination and volatilization behavior of uranium and zirconium oxides has been studied by TG-DTA method in the presence of fluorine. From the TG-DTA result of UO2 in F2 atmosphere, the weight gradually increased up to 7% at 350 oC followed by rapid weight decrease with exothermic peak showing the vaporization of uranium as UF6. ZrO2 showed similar fluorination behavior to that of UO2. However, fluorination of UO2-ZrO2 seemed to be suppressed with increasing ZrO2 amount. This may be caused by the formation of solid solution. The results were compared with the thermodynamic consideration.
Proceedings Inclusion? Planned: A print-only volume

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

Adsorption of Platinum and Palladium from Hydrochloric Acid Media by Hydrothermally Treated Garlic Waste Gel
Adsorptive Recovery of Palladium and Platinum from Acidic Chloride Media Using Chemically Modified Persimmon Tannnin
Calcined Nanocrystaline Layered Double Hydroxides for the Removal of Arsenate and Arsenite
Hide details for [<a href="/PM/PM.nsf/ApprovedAbstracts/1209ED12F181617585257E5800271B09?OpenDocument">Direct Solvent ExtractioDirect Solvent Extraction of Nickel from Sulfuric Acid Leach Solutions of Low Grade and Complicated Nickel Resources Using a Novel Extractant of HBL110
[Replication or Save Conflict]
Experimental Study on Valuable Metals Dissolution from Copper Slag
Fluorination Behavior of Uranium and Zirconium Mixture for Fuel Debris Treatment
Hydrometallurgical Extraction of Rare Earth Elements and Phosphorous from Low Grade Mine Tailings
Hydrometallurgical Recovery of Rare Earth Metals from Spent FCC Catalysts
Investigation of Iron Removal from Reduced Upgraded Titania Slag Using Mild Acids
Preparation and Analysis of Nd2O3 Doped Apatite Concentrate for Pyrometallurgical Recovery of Rare Earth Element
Production of Tungsten by Pulse Current Reduction of CaWO4
Recovery and Purification of In3+ from Zinc Hydrometallurgical Process in a T-junction Microchannel
Recovery of Yttrium and Neodymium from Copper Pregnant Leach Solutions by Solvent Extraction
The Search Minerals Direct Extraction Process for Rare Earth Element Recovery
U-1: Thermal Decomposition of Acid Strontium Oxalate
U-2: Treatment of a Complex Rare Earth-niobium-iron Associated Ore by a Novel Metallurgical Process
U-3: Upgrading Platinum from Spent Alumina-supported Catalyst by a Roast-leaching Process

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