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1. 发明授权

US09845542B2 Method of recovering nuclear fuel material 有权
公开(公告)号：US09845542B2
公开(公告)日：2017-12-19
申请号：US13899978
申请日：2013-05-22
申请人： Kabushiki Kaisha Toshiba
发明人： Yuya Takahashi , Koji Mizuguchi , Reiko Fujita , Hitoshi Nakamura , Shohei Kanamura , Naoki Kishimoto , Yoshikazu Matsubayashi , Takashi Oomori
IPC分类号： C25C3/34 , G21C19/46 , C25C7/00
CPC分类号： C25C7/005 , C25C3/34 , G21C19/46 , Y02W30/883
摘要： According to an embodiment, a nuclear fuel material recovery method of recovering a nuclear fuel material containing thorium metal by reprocessing an oxide of a nuclear fuel material containing thorium oxide in a spent fuel is provided. The method has: a first electrolytic reduction step of electrolytically reducing thorium oxide in a first molten salt of alkaline-earth metal halide; a first reduction product washing step of washing a reduction product; and a main electrolytic separation step of separating the reduction product. The first molten salt further contains alkali metal halide, and contains at least one out of a group consisting of calcium chloride, magnesium chloride, calcium fluoride and magnesium fluoride. The method may further has a second electrolytic reduction step of electrolytically reducing uranium oxide, plutonium oxide, and minor actinoid oxide in a second molten salt of alkali metal halide.

2. 发明申请

US20160225473A1 METHOD OF RECOVERING NUCLEAR FUEL MATERIAL 有权
标题翻译：回收核燃料材料的方法
公开(公告)号：US20160225473A1
公开(公告)日：2016-08-04
申请号：US13899978
申请日：2013-05-22
申请人： Kabushiki Kaisha Toshiba
发明人： Yuya TAKAHASHI , Koji Mizuguchi , Reiko Fujita , Hitoshi Nakamura , Shohei Kanamura , Naoki Kishimoto , Yoshikazu Matsubayashi , Takashi Oomori
IPC分类号： G21C19/48 , C25C7/00 , C25C3/34
CPC分类号： C25C7/005 , C25C3/34 , G21C19/46 , Y02W30/883
摘要： According to an embodiment, a nuclear fuel material recovery method of recovering a nuclear fuel material containing thorium metal by reprocessing an oxide of a nuclear fuel material containing thorium oxide in a spent fuel is provided. The method has: a first electrolytic reduction step of electrolytically reducing thorium oxide in a first molten salt of alkaline-earth metal halide; a first reduction product washing step of washing a reduction product; and a main electrolytic separation step of separating the reduction product. The first molten salt further contains alkali metal halide, and contains at least one out of a group consisting of calcium chloride, magnesium chloride, calcium fluoride and magnesium fluoride. The method may further has a second electrolytic reduction step of electrolytically reducing uranium oxide, plutonium oxide, and minor actinoid oxide in a second molten salt of alkali metal halide.
摘要翻译：根据一个实施方案，提供了一种通过在废燃料中再处理含有氧化钍的核燃料材料的氧化物来回收含有钍金属的核燃料材料的核燃料材料回收方法。该方法具有：在碱土金属卤化物的第一熔盐中电解还原氧化钍的第一电解还原步骤; 洗涤还原产物的第一还原产物洗涤步骤; 以及分离还原产物的主要电解分离步骤。第一熔融盐还含有碱金属卤化物，并含有氯化钙，氯化镁，氟化钙和氟化镁中的至少一种。该方法还可以具有在碱金属卤化物的第二熔融盐中电解还原铀氧化物，钚氧化物和次要锕系氧化物的第二电解还原步骤。

3. 发明申请

US20150228367A1 RADIOACTIVE MATERIAL PROCESSING METHOD 审中-公开
标题翻译：放射性材料加工方法
公开(公告)号：US20150228367A1
公开(公告)日：2015-08-13
申请号：US14435022
申请日：2013-10-11
申请人： KABUSHIKI KAISHA TOSHIBA
发明人： Yuya Takahashi , Koji Mizuguchi , Hitoshi Nakamura , Shohei Kanamura , Reiko Fujita , Takashi Oomori , Akira Ikeda
IPC分类号： G21F9/30 , G21F9/12
CPC分类号： G21F9/308 , G21F9/12
摘要： A corium processing method includes a dissolution step of feeding the corium into a first molten salt and dissolving uranium oxide and plutonium oxide contained in an oxide solid from the corium; a nuclear fuel recovery step of recovering the uranium oxide and the plutonium oxide from the first molten salt; a metal recovery step of feeding the corium into a second molten salt and separating and recovering metal Fe and metal Zr by molten salt electrolysis; and a solidification step of solidifying and recovering residues of the corium.
摘要翻译：一种腐蚀处理方法包括：将所述腐蚀物投入到第一熔融盐中并从所述腐蚀物中溶解含有氧化物固体的氧化铀和钚氧化物的溶解步骤; 从第一熔融盐中回收氧化铀和钚氧化物的核燃料回收步骤; 金属回收步骤，将所述铯进料到第二熔盐中，并通过熔融盐电解分离和回收金属Fe和金属Zr; 以及固化和回收所述corium残留物的固化步骤。

4. 发明授权

US10323330B2 Method of recovering nuclear fuel material 有权
公开(公告)号：US10323330B2
公开(公告)日：2019-06-18
申请号：US15696275
申请日：2017-09-06
申请人： Kabushiki Kaisha Toshiba
发明人： Yuya Takahashi , Koji Mizuguchi , Reiko Fujita , Hitoshi Nakamura , Shohei Kanamura , Naoki Kishimoto , Yoshikazu Matsubayashi , Takashi Oomori
IPC分类号： C22B5/04 , C22B5/18 , C25C3/34 , C22B60/02 , C25C7/00 , G21C19/46
摘要： According to an embodiment, a nuclear fuel material recovery method of recovering a nuclear fuel material containing thorium metal by reprocessing an oxide of a nuclear fuel material containing thorium oxide in a spent fuel is provided. The method has: a first electrolytic reduction step of electrolytically reducing thorium oxide in a first molten salt of alkaline-earth metal halide; a first reduction product washing step of washing a reduction product; and a main electrolytic separation step of separating the reduction product. The first molten salt further contains alkali metal halide, and contains at least one out of a group consisting of calcium chloride, magnesium chloride, calcium fluoride and magnesium fluoride. The method may further has a second electrolytic reduction step of electrolytically reducing uranium oxide, plutonium oxide, and minor actinoid oxide in a second molten salt of alkali metal halide.

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