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41. 发明授权

US4271034A Process of denitration of highly radio-active waste solutions 失效
标题翻译：高放射性废物溶液的脱硝工艺
公开(公告)号：US4271034A
公开(公告)日：1981-06-02
申请号：US13296
申请日：1979-02-21
申请人： Franz-Josef Gattys
发明人： Franz-Josef Gattys
IPC分类号： G21C19/46 , G21F9/06
CPC分类号： G21F9/06 , G21C19/46 , Y02W30/883
摘要： A method for the denitration of radioactive waste solutions wherein the nitrates in the solution are decomposed by the use of reducing agents in the form of powders or gaseous reactants. Additional advantages with respect to yield are obtained by conducting the discharge from the reaction through an irrigation path and then through a reflux condenser.
摘要翻译：一种放射性废物溶液脱硝的方法，其中溶液中的硝酸盐通过使用粉末或气体反应物形式的还原剂而分解。通过从反应通过灌溉路径然后通过回流冷凝器排出来获得关于产率的另外的优点。

42. 发明授权

US4246238A Dissolver for removing nuclear fuel materials from fuel element segments 失效
标题翻译：用于从燃料元件段去除核燃料材料的溶解剂
公开(公告)号：US4246238A
公开(公告)日：1981-01-20
申请号：US893777
申请日：1978-04-05
申请人： Hubert Goldacker , Gunter Koch , Helmut Schmieder , Ernst Warnecke , Walter Comper
发明人： Hubert Goldacker , Gunter Koch , Helmut Schmieder , Ernst Warnecke , Walter Comper
IPC分类号： B01D11/02 , G21C19/46 , B01F1/00 , G21F9/30
CPC分类号： B01D11/0219 , G21C19/46 , Y02W30/883
摘要： A dissolver for dissolving nuclear fuel materials out of fuel element segments during reprocessing of irradiated nuclear fuels, the dissolver being made of a material which is a neutron absorber and being composed of a dissolving vessel and a dissolving basket disposed in the vessel to receive such fuel element segments and to permit flow of dissolving fluid therethrough, with the basket being divided into a plurality of individual sections or compartments so as to prevent establishment of a critical state in the dissolver.
摘要翻译：一种溶解器，用于在辐射核燃料的后处理期间将核燃料材料从燃料元件段中溶解，该溶解器由作为中子吸收剂的材料制成，并由设置在该容器中的溶解容器和溶解篮组成以容纳该燃料并且允许溶解流体流过其中，其中篮被分成多个单独的部分或隔室，以便防止在溶解器中建立临界状态。

43. 发明授权

US4229421A Purification of plutonium 失效
标题翻译：钚的纯化
公开(公告)号：US4229421A
公开(公告)日：1980-10-21
申请号：US940010
申请日：1978-09-06
申请人： Edward S. Chapman , William Smith
发明人： Edward S. Chapman , William Smith
IPC分类号： C22B61/00 , C01G56/00 , C22B60/02 , C22B60/04 , G21C19/46
CPC分类号： G21C19/46 , C01G56/001 , C22B60/026 , C22B60/0295 , C22B60/04 , Y02W30/883
摘要： During the reprocessing of irradiated nuclear fuel by solvent extraction techniques a primary separation to give a uranium containing product stream and a plutonium containing product stream occurs. The plutonium in the plutonium containing stream is separated from neptunium and uranium by bringing a solution containing plutonium, neptunium and uranium in an organic solvent into contact first with an aqueous solution of a hydroxylamine and/or a hydrazine salt at 30.degree. to 35.degree. C. to preferentially reduce the neptunium and to extract it into the aqueous phase and then bringing the organic solution containing plutonium and uranium into contact with an aqueous phase containing a hydroxylamine and a hydrazine salt at about 50.degree. C. to preferentially reduce the plutonium and to extract it into the aqueous phase leaving the uranium in the organic solvent.
摘要翻译：在通过溶剂萃取技术对被辐照的核燃料进行后处理期间，发生一次分离以产生含铀产物流和含钚产物流。通过将含有钚，ium和铀的溶液在有机溶剂中与30℃至35℃的羟胺和/或肼盐水溶液接触，将含钚流中的钚与铀和铀分离优先减少ium子并将其提取到水相中，然后使含有钚和铀的有机溶液在约50℃下与含有羟胺和肼盐的水相接触以优先减少钚，并且将其提取到水相中，将铀置于有机溶剂中。

44. 发明授权

US4069293A Method for dissolving plutonium dioxide 失效
标题翻译：溶解二氧化钚的方法
公开(公告)号：US4069293A
公开(公告)日：1978-01-17
申请号：US659826
申请日：1976-02-20
申请人： Othar K. Tallent
发明人： Othar K. Tallent
IPC分类号： B01F1/00 , C22B3/04 , C22B60/04 , G21C19/46 , C01G56/00
CPC分类号： C22B3/045 , B01F1/0005 , C22B60/04 , G21C19/46 , Y02P10/234 , Y02W30/883
摘要： The fluoride-catalyzed, non-oxidative dissolution of plutonium dioxide in HNO.sub.3 is significantly enhanced in rate by oxidizing dissolved plutonium ions. It is believed that the oxidation of dissolved plutonium releases fluoride ions from a soluble plutonium-fluoride complex for further catalytic action.
摘要翻译：通过氧化溶解的钚离子，氟化物催化的二氧化钚在HNO 3中的非氧化性溶解速率显着提高。据信，溶解的钚的氧化从可溶性钚氟化物络合物中释放出氟离子，用于进一步的催化作用。

45. 发明授权

US3981961A Method of selective stripping of plutonium from organic solvents loaded with plutonium 失效
标题翻译：从装载有钚的有机溶剂中选择性汽提钚的方法
公开(公告)号：US3981961A
公开(公告)日：1976-09-21
申请号：US427349
申请日：1973-12-21
申请人： Andre Bathellier , Michel Germain
发明人： Andre Bathellier , Michel Germain
IPC分类号： B01D11/04 , C01G56/00 , C22B61/00 , G21C19/46 , G21F9/12 , B01D11/00
CPC分类号： C01G56/001 , B01D11/0492 , G21C19/46 , G21F9/12 , G21F9/125 , Y02W30/883
摘要： The method of selective stripping from plutonium-loaded organic solvents which may also contain uranium consists in passing the organic solvent in countercurrent contact with an aqueous solution of a salt of hydroxylamine and formic acid, the concentration of formic acid in the reaction medium being within the range of 1M to 5M.The method finds an application in the stripping of plutonium from trilaurylamine diluted in an aromatic hydrocarbon such as tert-butyl benzene or in the separation of uranium and plutonium contained in tributylphosphate diluted in an aliphatic hydrocarbon such as dodecane.
摘要翻译：从含铀的有机溶剂中选择性剥离的方法是将有机溶剂与羟胺盐和甲酸盐的水溶液逆流接触，反应介质中的甲酸浓度在范围从1M到5M。

46. 发明授权

US3900551A Selective extraction of metals from acidic uranium (vi) solutions using neo-tridecano-hydroxamic acid 失效
标题翻译：从酸性尿素（VI）中选择性提取金属使用近硝酸羟基酸
公开(公告)号：US3900551A
公开(公告)日：1975-08-19
申请号：US23137772
申请日：1972-03-02
申请人： CNEN
发明人： BARDONCELLI FRANCO , GROSSI GIUSEPPE
IPC分类号： C22B3/32 , C22B60/02 , G21C19/46 , G21F9/12 , B01D11/04 , C01G43/00
CPC分类号： C22B60/026 , C22B3/0024 , G21C19/46 , G21F9/125 , Y02P10/234 , Y02W30/883
摘要： According to this invention neo-alkyl-hydroxamic acids are employed as ion-exchanging agents in processes for liquid-liquid extraction with the aim of separating, purifying dissolved metals and of converting a metal salt solution into a solution of a salt of the same metal but with different anion. In particular it is an object of this invention to provide a method whereby a molecular pure uranium solution is obtained by selective extraction from a uranium solution delivered by irradiated fuel reprocessing plants and containing plutonium, fission products and other unwanted metals, in which method neo-tridecanehydroxamic acid is employed as ion exchanger.

47. 发明授权

US3855298A Method of purification of trilaurylamine 失效
标题翻译：纯化三环胺的方法
公开(公告)号：US3855298A
公开(公告)日：1974-12-17
申请号：US73402468
申请日：1968-06-03
申请人： COMMISSARIAT ENERGIE ATOMIQUE
发明人： BATHELLIER A , GERMAIN M
IPC分类号： C07C211/07 , C07C67/00 , C07C209/00 , G21C19/46 , G21F9/12 , C07C85/16
CPC分类号： G21C19/46 , G21F9/125 , Y02W30/883
摘要： A method of purification of trilaurylamine and more especially of removal of the dilaurylamine contained in the trilaurylamine in solution in an inert organic solvent. The method essentially consists in subjecting the solvent to be purified to a basic treatment, in precipitating the dilaurylamine by addition of an acid or a salt of trilaurylamine in stoichiometric quantity so that said acid or said salt yields with the trilaurylamine a salt which is soluble in the organic phase and with the dilaurylamine a salt which is insoluble in said phase and in separating the precipitate from the solvent.
摘要翻译：一种纯化三月桂胺的方法，更特别是在惰性有机溶剂中溶解于三月桂胺中的二月桂胺。该方法基本上包括将待纯化的溶剂进行碱处理，通过加入化学计量的三月桂胺的酸或三盐沉淀二月桂胺，使得所述酸或所述盐与三月桂胺一起产生可溶于有机相和二月桂胺是一种不溶于所述相的盐，并将沉淀物与溶剂分离。

48. 发明授权

US3726956A Method for dissolving molybdenum and tungsten 失效
标题翻译：用于溶解钼和钨的方法
公开(公告)号：US3726956A
公开(公告)日：1973-04-10
申请号：US3726956D
申请日：1972-02-23
申请人： SILVER G
发明人： SILVER G
IPC分类号： C01G39/00 , C01G41/00 , G21C19/46 , C01G56/00
CPC分类号： G21C19/46 , C01G39/00 , C01G41/00 , Y02W30/883
摘要： Method of dissolving tungsten or molybdenum materials such as molybdenum coatings from fissionable materials such as nuclear fuel ceramic particles by contacting the molybdenum with sodium hypochlorite (NaClO) solution until desired dissolution is generally complete.
摘要翻译：通过使钼与次氯酸钠（NaClO）溶液接触直到所需的溶解通常完成，从而将诸如核燃料陶瓷颗粒的可裂变材料的钼或钼材料如钼涂层溶解的方法。

49. 发明授权

US3560169A Manner of processing plutonium-containing uranium fuel from nuclear reactors 失效
标题翻译：从核反应堆处理含有铀的铀燃料的方法
公开(公告)号：US3560169A
公开(公告)日：1971-02-02
申请号：US3560169D
申请日：1968-04-08
申请人： ATOMENERGI AB
发明人： LARSSON ALF HARALD , HULTGREN AKE VALDEMAR
IPC分类号： G21C19/46 , B01D11/04
CPC分类号： G21C19/46 , Y02W30/883
摘要： IN THE RECOVERY OF PLUTONIUM AND URANIUM FROM THE CORE OF A NUCLEAR REACTOR BY DISSOLVING THE FUEL ELEMENTS IN AN AQUEOUS SOLUTION OF, FOR INSTANCE, NITRIC ACID, THE HIGHLY IRRADIATED CENTRAL PORTIONS OF THE CORE ARE DISSOLVED SEPARATELY FROM THOSE OF THE LESS IRRADIATED PERIPHERAL PORTIONS TO FORM SEPARATE FIRST AND SECOND AQUEOUS SOLUTIONS WHICH ARE SEPARATELY EXTRACTED WITH ORGANIC SOLVENTS, THE FIRST SOLUTION WITH ONE SELECTIVE TO PLUTONIUM RELATIVE TO URANIUM AND FISSION PRODUCTS AND THE SECOND ONE SELECTIVE TO PLUTONIUM AND URANIUM RELATIVE TO FISSION PRODUCTS. THE RESIDUE OF THE FIRST SOLUTION IS COMBINED WITH THE SECOND SOLUTION.

50. 发明授权

US3511621A Process for recovering uranium as uranium dioxide 失效
标题翻译：将二氧化铀回收的方法
公开(公告)号：US3511621A
公开(公告)日：1970-05-12
申请号：US3511621D
申请日：1968-01-31
申请人： JAPAN ATOMIC ENERGY RES INST
发明人： ISHIMORI TOMITARO , UENO KAORU , AKATSU EIKO , KAWASAKI MICHIKO
IPC分类号： C01G43/025 , C22B60/02 , G21C19/46 , C01G43/02
CPC分类号： G21C19/46 , C01G43/025 , C01P2006/80 , C22B60/026 , Y02P10/212 , Y02W30/883

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