Conversion of Simulated High-level Liquid Waste to Chloride for the Pretreatment of Pyrometallurgical Partitioning Process
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概要
- 論文の詳細を見る
A pyrometallurgical partitioning process is being developed for recovering minor actinides from high-level liquid waste resulting from PUREX reprocessing. Since the high-level liquid waste consists of concentrated raffinate, concentrated alkaline waste and insoluble residues, the various elements in the waste must be converted to chlorides before they can be sent on to the pyrometallurgical partitioning process. The conversion to chlorides is done by a combination of denitration and chlorination. The mass balance of these processes was measured in the present study using simulated high-level liquid waste. The results indicate that almost all of the alkali elements and Re, substituting for Tc, and significant amounts of Se, Cr, and Mo were separated by denitration, and that Cr, Fe, Zr, Mo, and Te were separated by chlorination. The remaining noble metals, Ni, U, and alkaline-earth and rare-earth elements were efficiently converted to chlorides, which were then supplied to the reductive extraction test using a molten salt/liquid-Cd system to demonstrate that the obtained chlorides are appropriate for processing by pyrometallurgical partitioning. In further reduction, noble metals and Ni were reductively extracted into the liquid-Cd phase, and the rare-earth elements and U into the liquid-Cd phase by adding Li reductant. These elements were completely separated from the alkaline-earth elements remaining in the chloride phase.
- 社団法人 日本原子力学会の論文
- 2000-08-25
著者
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KINOSHITA Kensuke
Central Research Institute of Electric Power Industry
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Kurata Masaki
Central Research Institute of Electric Power Industry
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INOUE Tadashi
Central Research Institute of Electric Power Industry
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Inoue T
Central Research Institute Of Electric Power Industry
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KINOSHITA Kensuke
Komae Research Laboratory, Central Research Institute of Electric Power Industry
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INOUE Tadashi
Komae Research Laboratory, Central Research Institute of Electric Power Industry
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HIJIKATA Takatoshi
Central Research Institute of Electric Power Industry (CRIEPI)
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Kurata M
Central Research Institute Of Electric Power Industry
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Kinoshita Kensuke
Central Res. Inst. Of Electric Power Ind.
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Kinoshita K
Central Res. Inst. Electric Power Ind. Tokyo
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HIJIKATA Takatoshi
Central Research Institute of Electric Power Industry
関連論文
- Countercurrent Extraction Test with Continuous Flow of Molten LiCl-KCl Salt and Liquid Cd for Pyro-Reprocessing of Metal FBR Fuel
- Recovery of Transuranium Elements from Real High-Level Liquid Waste by Pyropartitioning Process
- Thermodynamic Evaluation of Liquid Cd Cathode Containing U and Pu
- Electrodeposition of Uranium and Transuranic Elements onto Solid Cathode in LiCl-KCl/Cd System for Pyrometallurgical Partitioning
- Pyrometallurgical Partitioning of Uranium and Transuranic Elements from Rare Earth Elements by Electrorefining and Reductive Extraction
- Conversion of Simulated High-level Liquid Waste to Chloride for the Pretreatment of Pyrometallurgical Partitioning Process
- Separation of Uranium and Transuranic Elements from Rare Earth Elements by Means of Multistage Extraction in LiCl-KCl/Bi System
- Separation Of Actinides from Rare Earth Elements by Electrorefining in LiCl-KCl Eutectic Salt
- Transfer Kinetics of Metals from Molten Fission Product Chloride to Liquid Lead Cathode during Electrolysis in Pyrometallurgical Treatment of Highly Radioactive Waste
- Integrated Experiments of Electrometallurgical Pyroprocessing Using Plutonium Oxide
- Sequential Electrolysis of U-Pu Alloy Containing a Small Amount of Am to Recover U- and U-Pu-Am Products
- Reactions of Uranium-Plutonium Alloys with Iron
- Reactions between U - Pu - Zr Alloys and Fe at 923 K
- The Transuranic Mass Balance during the Introduction of Metal Fuel FBR Cycle
- Recovery of Transuranium Elements from Real High-Level Liquid Waste by Pyropartitioning Process
- Electrochemical Reduction of (U,Pu)O_2 in Molten LiCl and CaCl_2 Electrolytes
- Development of Fast Reactor Metal Fuels Containing Minor Actinides
- Estimation of Material Balance in Pyrometallurgical Partitioning Process of Transuranic Elements from High-level Liquid Waste
- Single-Stage Extraction Test with Continuous Flow of Molten LiCl-KCl Salt and Liquid Cd for Pyro-Reprocessing of Metal FBR Fuel
- Development of High-Temperature Transport Technologies of Molten Salt Slurry in Pyrometallurgical Reprocessing
- Novel Chlorination of Zirconium Dioxide at Low Temperature
- Electrodeposition of Uranium and Transuranic Elements onto Solid Cathode in LiCl-KCl/Cd System for Pyrometallurgical Partitioning
- Development of High Temperature Molten Salt Transport Technology for Pyrometallurgical Reprocessing