公开(公告)号：US4514511A

公开(公告)日：1985-04-30

申请号：US496138

申请日：1983-05-19

Applicant: Roland Jacques ,  Thierry Dupin

Inventor： Roland Jacques ,  Thierry Dupin

IPC: B01J2/08 ,  B01J21/00 ,  B01J21/04 ,  B01J35/08 ,  C01F7/02 ,  B01J37/00

CPC classification number: B01J35/08 ,  B01J2/08 ,  B01J21/04 ,  C01F7/025 ,  C01P2004/32 ,  C01P2006/12 ,  C01P2006/14 ,  C01P2006/16 ,  C01P2006/17 ,  C01P2006/22

Abstract: Spheroidal alumina particulates well adapted as catalysts or catalyst supports and having enhanced pore volumes are facilely prepared by drop coagulating an aqueous suspension or dispersion of alumina, or an aqueous solution of a basic aluminum salt, said suspension, dispersion or solution comprising an oil-in-water emulsion, and then recovering, drying and calcining the gelled particulates which result.

Abstract translation: 充分适应催化剂或催化剂载体并且具有增强的孔体积的球形氧化铝颗粒通过将氧化铝的水性悬浮液或分散体或碱性铝盐的水溶液，所述悬浮液，分散体或包含油的溶液 - 水乳液，然后回收，干燥和煅烧产生的凝胶颗粒。

公开(公告)号：US4459245A

公开(公告)日：1984-07-10

申请号：US340624

申请日：1982-01-19

Applicant: Allen D. Ryon ,  Paul A. Haas ,  John S. Vavruska

Inventor： Allen D. Ryon ,  Paul A. Haas ,  John S. Vavruska

IPC: B01J2/08 ,  G21C21/00

CPC classification number: B01J2/08

Abstract: The present invention is directed to a method and apparatus for making a population of dense, closely size-controlled microspheres by sol-gel procedures wherein said microspheres are characterized by a significant percentage of said population being within a predetermined, relatively narrow size range. Microsphere populations thus provided are useful in vibratory-packed processes for nuclear fuels to be irradiated in LWR- and FBR-type nuclear reactors.

Abstract translation: 本发明涉及通过溶胶 - 凝胶方法制备密集，紧密尺寸控制的微球体群体的方法和装置，其中所述微球的特征在于所述群体的显着百分比在预定的相对窄的尺寸范围内。 如此提供的微球群体可用于在LWR和FBR型核反应堆中照射核燃料的振动包装过程。

公开(公告)号：US4382885A

公开(公告)日：1983-05-10

申请号：US257014

申请日：1981-04-24

Applicant: Paul A. Haas

Inventor： Paul A. Haas

IPC: B01J2/08 ,  C01F15/00 ,  C01G43/00 ,  C01G43/025 ,  C01G56/00 ,  G21C3/62

CPC classification number: C01G43/025 ,  B01J2/08 ,  C01F15/00 ,  C01G43/00 ,  C01G56/004 ,  C01G56/005 ,  G21C3/623 ,  C01P2004/32 ,  C01P2006/10 ,  Y02E30/38

Abstract: Nuclear fuel is made by contacting an aqueous solution containing an actinide salt with an aqueous solution containing ammonium hydroxide, ammonium oxalate, or oxalic acid in an amount that will react with a fraction of the actinide salt to form a precipitate consisting of the hydroxide or oxalate of the actinide. A slurry consisting of the precipitate and solution containing the unreacted actinide salt is formed into drops which are gelled, calcined, and pressed to form pellets.

Abstract translation: 核燃料通过使含有锕系盐的水溶液与含有氢氧化铵，草酸铵或草酸的水溶液接触，其量将与一部分锕系盐反应形成由氢氧化物或草酸盐组成的沉淀物 的锕系元素。 将由沉淀物组成的浆料和含有未反应的锕系盐的溶液形成为凝胶化，煅烧和压制形成颗粒的液滴。

公开(公告)号：US4347200A

公开(公告)日：1982-08-31

申请号：US132889

申请日：1980-03-24

Applicant: Giovanni Bezzi ,  Ego Pauluzzi ,  Mauro Zanardi

Inventor： Giovanni Bezzi ,  Ego Pauluzzi ,  Mauro Zanardi

IPC: B01J2/08 ,  B01J35/08 ,  B01J2/04 ,  B01J2/06

CPC classification number: B01J2/08 ,  B01J35/08

Abstract: A method is disclosed for producing solid materials in form of microspheres or spherules for a number of applications, such as nuclear fuel, catalyst, fluid beds for fluidization and other like applications. An inert gas shield is provided to surround the droplets of liquid from which the microspheres shall be originated so as to prevent a premature reaction of such droplets with the reactive gas. Provision is made for renewing the braking foam placed over the liquid reactive bath and the reactive gas is supplied in the form of a blade-like stream so as to improve the contact time and intensity between the droplets and the reactive gas.

Abstract translation: 公开了用于生产用于许多应用的微球或球体形式的固体材料的方法，例如核燃料，催化剂，用于流化的流化床和其它类似应用。 提供惰性气体屏蔽以包围起始于微球的液滴，以防止这种液滴与反应性气体的过早反应。 提供了更换放置在液体反应槽上的制动泡沫，并且以刀片状流的形式提供反应气体，以便改善液滴和反应性气体之间的接触时间和强度。

公开(公告)号：US4184976A

公开(公告)日：1980-01-22

申请号：US854008

申请日：1977-11-22

Applicant: Erich Zimmer

Inventor： Erich Zimmer

IPC: B01J2/08 ,  C01G43/025 ,  C01G43/02 ,  C04B35/00

CPC classification number: B01J2/08 ,  C01G43/025 ,  C01P2004/84 ,  C01P2006/10

Abstract: A method of making metallic oxide or carbide particles of uranium, which prises fuels or breeder materials for nuclear reactors. An aqueous solution of uranyl nitrate or chloride and, if necessary, colloidal carbon is added dropwise into an organic ketone or ketone mixture phase which is located above an aqueous ammonia solution. The thereupon formed particles are sintered.

Abstract translation: 一种制备铀的金属氧化物或碳化carbide粒的方法，其包括用于核反应堆的燃料或育种材料。 将硝酸铀酰或氯化物水溶液（如果需要）滴加到位于氨水溶液上方的有机酮或酮混合物相中。 随后形成的颗粒被烧结。

公开(公告)号：US4113796A

公开(公告)日：1978-09-12

申请号：US400980

申请日：1973-09-26

Applicant: Jurgen Bischoff ,  Friedrich Kowitz ,  Karl-Heinz Ott ,  Herbert Schuster ,  Harry Rohr ,  Hans Weitzel

Inventor： Jurgen Bischoff ,  Friedrich Kowitz ,  Karl-Heinz Ott ,  Herbert Schuster ,  Harry Rohr ,  Hans Weitzel

IPC: B01J2/08 ,  B29B9/08 ,  C08F6/22 ,  C08J3/16 ,  C08F6/18 ,  C08L51/00

CPC classification number: C08J3/16 ,  B01J2/08 ,  B29B9/08 ,  C08F6/22

Abstract: Isolating thermoplastic or thermoelastic polymers in the form of a powder of limited water and precipitant content and uniform grain size from their aqueous dispersions wherein(i) a polymer dispersion and a precipitant are intensively mixed at an uptake of mechanical energy of 0.2 to 0.6 KWh per m.sup.3 of dispersion thus causing high turbulence,(ii) the polymer is precipitated while in this state of high turbulence at a temperature below the sintering temperature of the polymer,(iii) the precipitated polymer particles are agglomerated and hardened while still in contact with the aqueous liquor either in one or in several stages, and(iv) the aqueous liquor and agglomerated polymer particles are separated from one another.

Abstract translation: 隔离热水或热弹性聚合物，其形式为有限水和沉淀剂含量的粉末，并且其水分散体具有均匀的晶粒尺寸，其中（I）聚合物分散体和降解剂在机械能力的0.2-3.0KWh的压力下混合均匀 m3的分散体，从而引起高湍流，（II）聚合物在下列温度下在高温下在聚合物的烧结温度下降低，（III）降低的聚合物颗粒在仍然与之接触时被凝聚和硬化 水性液体在一个或几个阶段，和（IV）水性液体和聚合聚合物颗粒从另一个分离。

公开(公告)号：US4035450A

公开(公告)日：1977-07-12

申请号：US536872

申请日：1974-12-23

Applicant: Hans Langen ,  Paul Naefe

Inventor： Hans Langen ,  Paul Naefe

IPC: B01J2/08 ,  B05B7/06

CPC classification number: B01J2/08

Abstract: A device for making ball-shaped metal oxide and metal carbide particles, ecially particles of fuel or breeder substances for nuclear reactors such as oxidic or carbide cores of uranium or the like. The device comprises a container for the ammonia and organic phase, and an injection tube leading into the top of the container. The injection tube is surrounded by a mantle passage of which the cross section is widened in the region of the mouth of the injection tube. The injection tube leads into the container at a distance of from 0.5 to 2 mm. ahead of the end of the mantle passage. The injection tube has an outward diameter which steadily decreases toward the mouth of the injection tube.

Abstract translation: 用于制造球形金属氧化物和金属碳化物颗粒的装置，特别是用于核反应堆的燃料或增殖物质的颗粒，例如铀的氧化物或碳化物核心等。 该装置包括用于氨和有机相的容器以及通向容器顶部的注入管。 注射管由在注射管的嘴部的区域中的横截面加宽的套管通道围绕。 注射管以0.5至2mm的距离引入容器。 在地幔通道的末端之前。 注射管具有朝向注射管的嘴部稳定地减小的外径。

公开(公告)号：US3886086A

公开(公告)日：1975-05-27

申请号：US26195872

申请日：1972-06-12

Applicant: ATOMIC ENERGY AUTHORITY UK

Inventor： SIMPSON MALCOLM PATRICK ,  STOCKWELL CLAUDE LEWIS

IPC: B01J2/08 ,  C01G43/00 ,  G21C3/62 ,  B01J13/00

CPC classification number: B01J2/08 ,  Y10T428/2982

Abstract: In certain gelation processes the gelling of liquid droplets to produce gel spheres is achieved by allowing the droplets to fall into a liquid reagent which acts to gel the droplets. According to the present invention a foam layer is provided above the surface of the liquid reagent so as to inhibit the droplets from contacting the surface of the liquid reagent at a velocity sufficient to disrupt or substantially distort the droplets. Gelation apparatus for conducting the process is also disclosed, said apparatus having a column vertically divided by a baffle into a turbulent bubble region, and a substantially quiescent region through which the droplets fall after the partially gelled droplets have previously passed through the foam layer.

Abstract translation: 在某些凝胶化过程中，通过使液滴落入用于凝胶化液滴的液体试剂中来实现液滴的凝胶化以产生凝胶球。

公开(公告)号：US3875302A

公开(公告)日：1975-04-01

申请号：US38647373

申请日：1973-08-07

Applicant: KURARAY CO

Inventor： INOUE TAISEI

IPC: A01C21/00 ,  A01K97/04 ,  B01J2/08 ,  B01J13/00 ,  C05G3/00 ,  C08K5/00 ,  C08L29/04 ,  A01N17/14

CPC classification number: C05G3/0047 ,  A01C21/00 ,  A01K97/045 ,  B01J2/08 ,  B01J13/0065 ,  C08K5/0008 ,  C08L29/04 ,  C05G3/0082 ,  C08L2666/02

Abstract: A process is provided for preparing gelled vinyl alcohol polymers comprising freezing an aqueous solution of a vinyl alcohol polymer below about -5*C., and thereafter melting the frozen solution. Articles such as artificial bait prepared from said gelled vinyl alcohol polymers are also provided.

Abstract translation: 提供了一种制备胶凝乙烯醇聚合物的方法，包括将乙烯醇聚合物的水溶液冷冻至低于约-5℃，然后熔化冷冻溶液。 还提供了由所述凝胶化乙烯醇聚合物制备的人造诱饵等制品。

公开(公告)号：US3728421A

公开(公告)日：1973-04-17

申请号：US3728421D

申请日：1970-12-08

Applicant: STICHTING REACTOR CENTRUM

Inventor： NOOTHOUT A

IPC: B01J2/06 ,  B01J2/08 ,  C01B21/082 ,  C01B31/30 ,  C01G56/00 ,  C09K3/04

CPC classification number: B01J2/08 ,  C01B32/90 ,  C01P2004/32

Abstract: A method is disclosed of preparing spherical particles of metal oxide hydrate and metal oxide hydrate with carbon, which particles can be converted into spherical oxide, and if carbon has been incorporated, into carbide particles. Spherical oxides and carbides of actinide metals are used as fissile material in nuclear technics. An aqueous solution of a metal salt is mixed at a low temperature with one or more ammonia liberating agents and subsequently solidified by dispersion in a phase of high temperature non-miscible with water, after which the solid substance obtained is separated, washed and subjected to thermal treatment.

Abstract translation: 公开了一种制备金属氧化物水合物和金属氧化物水合物与碳的球形颗粒的方法，该颗粒可以转化成球形氧化物，并且如果碳已经被引入碳化物颗粒中。