公开(公告)号：US20230313339A1

公开(公告)日：2023-10-05

申请号：US17947428

申请日：2022-09-19

申请人： China Institute of Atomic Energy

发明人： Qian LIU ,  Liyang ZHU ,  Xuan HAO ,  Youshi LAN ,  Jin ZHOU ,  Suliang YANG ,  Guoxin TIAN ,  Qin CHEN ,  Guoguo ZHANG

IPC分类号： C22B60/04 ,  C01G56/00

CPC分类号： C22B60/04 ,  C01G56/001

摘要： A method for treating retained plutonium in a waste organic phase of a plutonium uranium reduction extraction (PUREX) process is provided. The waste organic phase of the PUREX process contains an organic solvent and plutonium, and the method includes contacting the waste organic phase of the PUREX process with an aqueous back extraction solution containing 2,6-pyridinedicarboxylic acid for back extraction to obtain a plutonium back extraction product; and the plutonium in the back extraction solution may be loaded onto the column for adsorption, transformation and desorption by an anion exchange column, ultimately recovering plutonium in the back extraction solution.

公开(公告)号：US11594344B2

公开(公告)日：2023-02-28

申请号：US16770836

申请日：2018-12-07

申请人： ORANO CYCLE ,  COMMISSARIAT À L'ÉNERGIE ATOMIQUE ET AUX ÉNERGIES ALTERNATIVES

发明人： François Poncelet ,  Nicolas Vigier ,  Bénédicte Arab-Chapelet ,  Aurélie Gauthe ,  Eléonore Welcomme ,  Marie Hélène Noire

IPC分类号： G21C19/46 ,  C01G43/01 ,  C01G56/00 ,  G21C3/62

摘要： A method for preparing a powder comprising an intimate mixture of U3O8 particles and PuO2 particles and which may further comprise particles of ThO2 or NpO2. The method comprises: preparing, via oxalic precipitations, an aqueous suspension S1 of particles of uranium(IV) oxalate and an aqueous suspension S2 of particles of plutonium(IV) oxalate; mixing the aqueous suspension S1 with the aqueous suspension S2 to obtain an aqueous suspension S1+2; separating the aqueous suspension S1+2 into an aqueous phase and a solid phase comprising the particles of uranium(IV) oxalate and the particles of plutonium(IV) oxalate; and calcining the solid phase to convert (1) the particles of uranium(IV) oxalate to particles of triuranium octoxide and (2) the particles of plutonium(IV) oxalate to particles of plutonium(IV) dioxide, whereby the powder is obtained.

公开(公告)号：US11285534B2

公开(公告)日：2022-03-29

申请号：US16147347

申请日：2018-09-28

申请人： UCHICAGO ARGONNE, LLC

发明人： Abdellatif M. Yacout ,  Sumit Bhattacharya

IPC分类号： B22F3/00 ,  B22F1/00 ,  B22F3/093 ,  C01G43/01 ,  B82Y30/00 ,  C01G56/00 ,  C22C28/00

摘要： A method loading powder into a mold can include immersing the mold comprising one or more microchannels into a suspension comprising the powder and a surfactant suspended in a dispersant, wherein the powder comprises particles having an average particle size of less than 100 μm, wherein the mold is substantially entirely covered by the suspension; heating the suspension having the mold immersed therein under a temperature condition suitable to lower the stability of the particles of the powder in the suspension such that the particles settle out of solution and into the one or more microchannels; and applying an ultrasonic wave to the heated suspension to further settle the particles of the powder into the one or more microchannels thereby filling the one or more microchannels of the mold with the powder.

公开(公告)号：US20190300384A1

公开(公告)日：2019-10-03

申请号：US15936615

申请日：2018-03-27

申请人： Savannah River Nuclear Solutions, LLC

发明人： Christopher S. Dandeneau ,  Jake W. Amoroso

IPC分类号： C01G56/00 ,  C01G25/00 ,  C01F17/00

摘要： One-step solution combustion synthesis (SCS) methods for fabricating durable crystalline transuranic-doped rare earth zirconium pyrochlores are described. Methods are fast, amenable to upscaling, and present a simple strategy for producing crystalline ceramic materials that meet the minimum attractiveness criteria for special nuclear material. The methods include analysis of reactants and reaction conditions to select proper fuel as well as proper fuel content so as to encourage formation of the crystalline product in a single-step synthesis procedure.

公开(公告)号：US20180286527A1

公开(公告)日：2018-10-04

申请号：US15768780

申请日：2016-10-18

申请人： COMMISSARIAT À L'ÉNERGIE ATOMIQUE ET AUX ÉNERGIES ALTERNATIVES ,  Orano Cycle

发明人： Xavier Heres ,  Gilles Bernier ,  Binh Dinh ,  Patrick Pochon ,  Danièle Sans ,  Elisabeth Zekri

IPC分类号： G21C19/46 ,  G21F9/12 ,  C01G56/00

CPC分类号： G21C19/46 ,  C01G56/001 ,  G21F9/06 ,  G21F9/125 ,  Y02W30/883

摘要： The use of hydroxyiminoalkanoic acids including at least four carbon atoms as anti-nitrous agents in operations of reductive stripping of plutonium. The invention may be useful in any method for processing spent nuclear fuels that includes one or more operations of reductive stripping of plutonium and, more particularly, in the PUREX method as implemented in modern nuclear fuel processing plants, as well as in processes derived therefrom.

公开(公告)号：US10005676B2

公开(公告)日：2018-06-26

申请号：US15031105

申请日：2014-10-22

申请人： COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES ,  Orano Cycle

发明人： Guillaume Peter-Soldani ,  Stephane Grandjean ,  Francis Abraham

IPC分类号： C01G43/00 ,  C01G43/025 ,  C01G56/00 ,  G21C3/62 ,  G21C19/46 ,  G21C21/02

CPC分类号： C01G43/025 ,  C01G43/00 ,  C01G56/004 ,  C01G56/005 ,  C01G56/007 ,  C01P2002/50 ,  G21C3/623 ,  G21C19/46 ,  G21C21/02 ,  Y02E30/38 ,  Y02W30/883

摘要： A method for preparing a powder of a solid solution of dioxide of uranium and of at least one other actinide and/or lanthanide element comprising combusting a solution that comprises uranyl nitrate and at least one nitrate of the other actinide and/or lanthanide element and glycine, with the glycine being used in a predetermined amount so as to form, at the end of the combustion, the solid solution.

公开(公告)号：US20140219900A1

公开(公告)日：2014-08-07

申请号：US14345855

申请日：2012-09-25

申请人： Commissariat a I'energie atomique et aux ene alt

发明人： Annabelle Laplace ,  Jean-Francois Vigier ,  Thierry Plet ,  Catherine Renard ,  Francis Abraham ,  Cyrine Slim ,  Sylvie Delpech ,  Gerard Picard

IPC分类号： C01G56/00 ,  C01F17/00 ,  C01G43/01

CPC分类号： C01G56/005 ,  C01F17/0043 ,  C01F17/0056 ,  C01F17/0068 ,  C01G43/01 ,  C01G43/025 ,  C01P2002/88 ,  C01P2004/20 ,  C01P2004/38 ,  G21C19/48 ,  G21F9/308 ,  Y02W30/884

摘要： The invention relates to a process for manufacturing an oxychloride or oxide of actinide(s) and/or of lanthanide(s) from a chloride of actinide(s) and/or of lanthanide(s) present in a medium comprising at least one molten salt of chloride type comprising a step of bringing said chloride of actinide(s) and/or lanthanide(s) present in said medium comprising at least one molten salt of chloride type into contact with a wet inert gas.

摘要翻译： 本发明涉及一种从介质中存在的介于锕系元素和/或镧系元素的氯化物中制备氯化an或锕系氧化物的方法，该方法包括至少一种熔融 氯化物类型的盐包括使包含至少一种氯化物型熔融盐的所述介质中存在的锕系元素和/或镧系元素的氯化物与湿惰性气体接触的步骤。

公开(公告)号：US08475746B2

公开(公告)日：2013-07-02

申请号：US13099088

申请日：2011-05-02

申请人： Kyeong-Woo Chung ,  Chul-Joo Kim ,  Ho-Sung Yoon

发明人： Kyeong-Woo Chung ,  Chul-Joo Kim ,  Ho-Sung Yoon

IPC分类号： C01G56/00 ,  C22B60/02

CPC分类号： C22B60/0265 ,  G21F9/12

摘要： Disclosed herein is a uranium ion exchange adsorption method using ultrasound. The method includes placing a slurry obtained by mixing uranium ions, sulfuric acid and an ion exchange resin into a reaction bath, and stirring the slurry in the reaction bath while simultaneously applying ultrasound to the reaction bath to allow the uranium ions to be adsorbed to the ion exchange resin through ion exchange adsorption. The method has an improved ion exchange adsorption rate of the uranium ions.

摘要翻译： 本文公开了使用超声波的铀离子交换吸附方法。 该方法包括将通过将铀离子，硫酸和离子交换树脂混合获得的浆料放入反应浴中，并在反应浴中搅拌浆料同时向反应槽施加超声波，以使铀离子被吸附到 离子交换树脂通过离子交换吸附。 该方法具有改善的铀离子的离子交换吸附率。

公开(公告)号：US08470269B2

公开(公告)日：2013-06-25

申请号：US13099089

申请日：2011-05-02

申请人： Kyeong-Woo Chung ,  Chul-Joo Kim ,  Ho-Sung Yoon

发明人： Kyeong-Woo Chung ,  Chul-Joo Kim ,  Ho-Sung Yoon

IPC分类号： B01D11/00 ,  B01F1/00 ,  C01G43/00 ,  C01G56/00 ,  C22B60/02

CPC分类号： C22B60/0234

摘要： A highly efficient uranium leaching method using ultrasound is disclosed. The uranium leaching method includes preparing black slate powder containing uranium by pulverizing black slate containing uranium, placing the black slate powder and water in a reaction bath, and performing uranium leaching by adding and mixing sulfuric acid and an oxidant with the black slate powder and water to prepare a mixture in the reaction bath while applying ultrasound to the reaction bath. In this method, uranium leaching efficiency can be maximized by adding sulfuric acid to the uranium ore while applying ultrasound thereto.

摘要翻译： 公开了一种使用超声波的高效铀浸出方法。 铀浸出方法包括通过粉碎含有铀的黑色板岩来制备含有铀的黑色板岩粉末，将黑色板岩粉末和水置于反应槽中，并通过将黑色石板粉和水加入并混合硫酸和氧化剂来进行铀浸出 以在反应浴中制备混合物，同时向反应浴施加超声波。 在这种方法中，通过向铀矿中加入硫酸同时对其进行超声波处理，可以最大化铀浸出效率。

公开(公告)号：US08394346B2

公开(公告)日：2013-03-12

申请号：US13380456

申请日：2010-06-29

申请人： Jean Luc Emin ,  Francois Drain ,  Francois Poncelet ,  Binh Dinh ,  Philippe Pradel ,  Pascal Baron ,  Michel Masson

发明人： Jean Luc Emin ,  Francois Drain ,  Francois Poncelet ,  Binh Dinh ,  Philippe Pradel ,  Pascal Baron ,  Michel Masson

IPC分类号： C01G56/00

CPC分类号： G21C19/46 ,  C01G56/001 ,  Y02W30/883

摘要： A method for treating spent nuclear fuel, which includes first decontaminating the uranium, plutonium and neptunium found in a nitric aqueous phase resulting from dissolving the nuclear fuel in HNO3. The uranium, plutonium and neptunium found in the solvent phase is then split in a first aqueous phase and a second aqueous phase. Next, the first aqueous phase is stored. Following, the plutonium or other mixtures found in the first aqueous phase is purified relative to the fission products still found in said phase, in order to obtain, at the end of said purification, an aqueous solution containing a mixture of Pu and U or Pu, U and Np. Finally the resulting mixture of Pu and U or the mixture of Pu, U and Np is co-converted into a mixed oxide.

摘要翻译： 一种处理乏核燃料的方法，其中包括首先将在核酸燃料溶解于HNO 3中的硝酸水相中发现的铀，钚和first水进行净化。 然后在溶剂相中发现的铀，钚和then then分裂在第一水相和第二水相中。 接下来，存储第一水相。 以下，相对于在所述相中仍存在的裂变产物，在第一水相中发现的钚或其他混合物被纯化，以便在所述纯化结束时获得含有Pu和U或Pu的混合物的水溶液 ，U和Np。 最后将所得到的Pu和U的混合物或Pu，U和Np的混合物共转化成混合氧化物。