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31. 发明授权

US5470479A Continuous, steady-state, chromatographic separation of gadolinium isotopes 失效
标题翻译：连续，稳态，色谱分离钆同位素
公开(公告)号：US5470479A
公开(公告)日：1995-11-28
申请号：US264806
申请日：1994-06-23
申请人： Thomas S. Snyder , Steven H. Peterson , Umesh P. Nayak
发明人： Thomas S. Snyder , Steven H. Peterson , Umesh P. Nayak
IPC分类号： B01D59/30 , G01N30/58 , G01N30/96 , B01D15/08
CPC分类号： B01D59/30 , G01N30/58 , Y10S423/07
摘要： A method and apparatus for the partial or complete continuous separation of isotopes of gadolinium, especially high thermal neutron capture cross-section gadolinium isotopes, using continuous, steady-state, chromatography in which an ion exchange resin is the stationary phase, an aqueous solution of ions based on a mixture of gadolinium isotopes is the feed phase, and an aqueous acid eluant solution is the mobile phase. The method involves the mobile phase eluting or desorbing the gadolinium isotopic solute or ligand adsorbed on the stationary phase under conditions such that each of the various naturally occurring isotopes of gadolinium is primarily eluted in an elution volume distinct from the elution volumes of the other isotopes. In a preferred embodiment, the conditions are such that at least one of the elution volumes contains essentially only one isotope of gadolinium. The method is preferably conducted in a continuous, steady-state manner, and it is preferably conducted in a single operation in a continuous annular chromatograph (CAC).
摘要翻译：使用其中离子交换树脂为固定相的连续稳态色谱法部分或完全连续分离钆同位素特别是高热中子捕获截面钆同位素的方法和装置，基于钆同位素混合物的离子是进料相，含水酸洗脱液是流动相。该方法包括流动相洗脱或解吸吸附在固定相上的钆同位素溶质或配体，使得各种天然存在的钆的各种天然存在的同位素在与其它同位素的洗脱体积不同的洗脱体积中主要洗脱。在优选的实施方案中，条件使得至少一个洗脱体积基本上仅含有一种钆同位素。该方法优选以连续的稳态方式进行，优选在连续环状色谱（CAC）中一次进行。

32. 发明授权

US5437795A Chromatographic separation of erbium isotopes 失效
标题翻译：色谱分离铒同位素
公开(公告)号：US5437795A
公开(公告)日：1995-08-01
申请号：US264810
申请日：1994-06-23
申请人： Thomas S. Snyder , Steven H. Peterson , Umesh P. Nayak , Richard J. Beleski
发明人： Thomas S. Snyder , Steven H. Peterson , Umesh P. Nayak , Richard J. Beleski
IPC分类号： B01D59/30 , G01N30/58 , B01D15/08
CPC分类号： B01D59/30 , G01N30/58
摘要： A process for the partial or complete simultaneous separation of isotopes of erbium, especially high thermal neutron capture cross-section erbium isotopes, using continuous, steady-state, chromatography in which an ion exchange resin is the stationary phase, an aqueous solution of ions based on a mixture of erbium isotopes is the feed phase, and an aqueous acid eluant solution is the mobile phase. The process involves the mobile phase eluting or desorbing the erbium isotopic solute adsorbed on the stationary phase under conditions such that each of the various naturally occurring isotopes of erbium is primarily eluted in an elution volume distinct from the elution volumes of the other isotopes. In a preferred embodiment, the conditions are such that at least one of the elution volumes contains essentially only one isotope of erbium. The process is preferably conducted in a continuous, steady-state manner, and in particular is preferably conducted in a continuous annular chromatograph (CAC).
摘要翻译：使用其中离子交换树脂为固定相的连续稳态色谱法，部分或完全同时分离铒的同位素，特别是高热中子捕获截面铒同位素的方法，基于离子的水溶液在铒同位素的混合物上是进料相，酸性洗脱剂水溶液是流动相。该方法包括流动相洗脱或解吸吸附在固定相上的铒同位素溶质，其条件是使得铒的各种天然存在的各种同位素主要以与其它同位素的洗脱体积不同的洗脱体积洗脱。在优选的实施方案中，条件使得洗脱体积中的至少一个基本上仅含有铒的一个同位素。该方法优选以连续的稳态方式进行，特别优选在连续环状色谱（CAC）中进行。

33. 发明授权

US5402455A Waste containment composite 失效
标题翻译：垃圾遏制复合材料
公开(公告)号：US5402455A
公开(公告)日：1995-03-28
申请号：US177902
申请日：1994-01-06
申请人： James F. Angelo, II , James T. Pride , Thomas S. Snyder
发明人： James F. Angelo, II , James T. Pride , Thomas S. Snyder
IPC分类号： G21F1/04 , G21F9/22
CPC分类号： G21F9/22 , G21F1/047 , G21Y2002/104 , G21Y2002/301 , G21Y2002/303 , G21Y2004/10 , G21Y2004/30
摘要： The present invention provides an improved multilayered storage structure composite material. The composite contains a fibrous mat made from interwoven fibers, preferably metallic fibers, that is encased with a concrete-based mixture to form a mat layer. At least one concrete-based layer is also disposed within the composite, and this concrete-based layer preferably contains at least one shielding additive. The composite material is preferably formed into a containment vessel for the storage of hazardous, radioactive, and mixed waste materials.
摘要翻译：本发明提供一种改进的多层储存结构复合材料。复合材料包含由交织纤维（优选金属纤维）制成的纤维垫，其被基于混凝土的混合物包裹以形成垫层。至少一个基于混凝土的层也设置在复合材料内，并且该混凝土基层优选含有至少一种屏蔽添加剂。复合材料优选形成用于储存危险的，放射性的和混合的废料的容纳容器。

34. 发明授权

US5217585A Transition metal decontamination process 失效
标题翻译：过渡金属去除工艺
公开(公告)号：US5217585A
公开(公告)日：1993-06-08
申请号：US811474
申请日：1991-12-20
申请人： Thomas S. Snyder , William R. Gass , Gregory F. Boris , Laura J. Ayers
发明人： Thomas S. Snyder , William R. Gass , Gregory F. Boris , Laura J. Ayers
IPC分类号： G21F9/28 , C01G99/00 , C22B3/06 , C22B23/06 , C25C1/00 , C25C1/08 , C25C1/12 , C25C1/14 , C25C1/18 , C25C1/22 , G01F9/00 , G21F9/06 , G21F9/10 , G21F9/30
CPC分类号： C01G99/003 , C22B3/06 , C22B3/24 , C25C1/00 , C25C1/08 , G21F9/06 , G21F9/30 , Y02P10/234
摘要： Nickel (or other transition metal) contaminated with about 5 ppm technetium is decontaminated by dissolving the nickel and the technetium into an aqueous acid solution while introducing a graphite or activated carbon powder into the acid to immediately adsorb the dissolving technetium. The technetium-contaminated powder is separated from the aqueous acid solution and the nickel is then electrowon from the solution. The depleted acid solution is then recycled back to the dissolution step.

35. 发明授权

US5098678A Chromatographic separation of zirconium isotopes 失效
标题翻译： ZIRCONIUM同位素的色谱分离
公开(公告)号：US5098678A
公开(公告)日：1992-03-24
申请号：US515965
申请日：1990-04-27
申请人： Ernest D. Lee , Thomas S. Snyder , Edward J. Lahoda
发明人： Ernest D. Lee , Thomas S. Snyder , Edward J. Lahoda
IPC分类号： B01D59/30 , G01N30/58
CPC分类号： B01D59/30 , G01N30/58 , Y10S423/07
摘要： The isotopes of zirconium can be partially or completely separated by loading an aqueous solution of an ionic compound of zirconium onto a cationic exchange resin which serves as the stationary phase of a chromatograph, eluting the compound with an aqueous acid and collecting distinct elution volumes representative of each isotope. In a preferred embodiment, the eluant is a strong mineral acid, such as hydrochloric acid and the chromatograph is of a type, such as a continuous annular chromatograph that it can be operated in a continuous, steady state manner.

36. 发明授权

US4900536A Preparation of precursors for yttrium-containing ceramic superconductors 失效
标题翻译：含钇陶瓷超导体前体的制备
公开(公告)号：US4900536A
公开(公告)日：1990-02-13
申请号：US121016
申请日：1987-11-16
申请人： Thomas S. Snyder , Richard A. Stoltz
发明人： Thomas S. Snyder , Richard A. Stoltz
IPC分类号： C01B13/32 , C01F17/00 , C01G3/00
CPC分类号： C01B13/32 , C01F17/0012 , C01F17/0062 , C01G3/006
摘要： This is a process for making precursors for ceramic superconductor. It utilizes fluidized bed chlorination of a rare earth ore (e.g. xenotime or monazite) a separation of yttrium chloride by differential condensation at 725.degree.-1200.degree. C. and reaction with an alkali metal alkoxide to produce yttrium alkoxide for mixing with alkoxide of other non-oxygen constituents of the superconductor for producing an alkoxide composite for processing into the superconductor.
摘要翻译：这是制备陶瓷超导体前体的方法。它利用稀土矿石（例如堇青石或独居石）的流化床氯化在725℃-112℃下通过差示冷凝分离氯化钇，并与碱金属醇盐反应生成钇醇盐以与其它非金属的醇盐混合，用于生产用于加工成超导体的醇盐复合物的超导体的氧化成分。

37. 发明授权

US4865695A Preparation of complexes of zirconium and hafnium tetrachlorides with phosphorus oxychloride 失效
标题翻译：锆和四氯化铪与磷酰氯的配合物的制备
公开(公告)号：US4865695A
公开(公告)日：1989-09-12
申请号：US242572
申请日：1988-09-12
申请人： Thomas S. Snyder , Richard A. Stoltz
发明人： Thomas S. Snyder , Richard A. Stoltz
IPC分类号： C01G25/04 , C01G27/04 , C22B9/10 , C22B34/14
CPC分类号： C01G25/04 , C01G27/04 , C22B34/14 , C22B9/106 , Y10S203/17
摘要： This is a method for molten salt systems related to distillation for zirconium-hafnium separation and prevents buildup of iron chloride by electrochemically reducing iron from the molten salt to give very low levels of iron chloride in the distillation column, to reduce corrosion, improve the product and, in some cases, to allow the molten salt system to be run continuously. The improvement comprises electrochemical purification of molten salt containing zirconium-hafnium chloride either, prior to introduction of the zirconium-hafnium chloride into a distillation column, or after introduction, or both, to substantially eliminate iron chloride from the zirconium-hafnium chloride. The molten salt during the electrochemical purification consists essentially of a mixture of chlorides of alkali metals, alkaline earth metals, zirconium, hafnium, aluminum, manganese, and/or zinc.
摘要翻译：这是与锆 - 铪分离蒸馏相关的熔盐体系的方法，通过电化学还原铁从熔融盐中形成氯化铁，在蒸馏塔中产生非常低水平的氯化铁，以减少腐蚀，改善产物并且在一些情况下允许熔盐系统连续运行。在将锆 - 氯化铪引入蒸馏塔之前，或在引入之后，或者两者之间，可以从氯化锆 - 氯化铪基本上除去氯化铁，这种改进包括电化学纯化含有氯化锆 - 氯化铪的熔融盐。电化学纯化期间的熔融盐主要由碱金属，碱土金属，锆，铪，铝，锰和/或锌的氯化物的混合物组成。

38. 发明授权

US4715992A Filter element reduction method 失效
标题翻译：滤芯元素还原法
公开(公告)号：US4715992A
公开(公告)日：1987-12-29
申请号：US793040
申请日：1985-10-30
申请人： Thomas S. Snyder , Herbert A. Burgman , Edward Mitchell
发明人： Thomas S. Snyder , Herbert A. Burgman , Edward Mitchell
IPC分类号： B09B3/00 , C08F2/00 , C08F2/44 , G21F9/00 , G21F9/30 , G21F9/16 , G21F9/04
CPC分类号： G21F9/30
摘要： Disclosed is a method of reducing the volume of a material containing addition polymerizable bonds by contacting the material with sufficient butyrolactone to dissolve the soluble organic material therein and form a slurry. About 0.1 to about 2% by weight, based on the slurry weight, of an addition polymerizable catalyst is added to polymerize and solidify the slurry. About 10 to about 50% by weight, based on total slurry weight, of an ethylenically unsaturated monomer, such as styrene, can be added to aid in the polymerization process. The process is especially suited to filter elements containing radioactive contaminants.
摘要翻译：公开了通过使材料与足够的丁内酯接触以溶解其中的可溶性有机材料并形成浆料来减少含有可加成聚合性键的材料的体积的方法。加入可聚合催化剂约0.1至约2重量％（基于浆料重量）以使浆料聚合并固化。可以加入约10至约50重量％（基于总浆料重量）的烯属不饱和单体如苯乙烯，以有助于聚合过程。该过程特别适用于过滤含有放射性污染物的元素。

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