公开(公告)号：US4315839A

公开(公告)日：1982-02-16

申请号：US124778

申请日：1980-02-26

Applicant: Gilbert Bouge ,  Roland Jacques ,  Regis Poisson ,  Laurent Seigneurin

Inventor： Gilbert Bouge ,  Roland Jacques ,  Regis Poisson ,  Laurent Seigneurin

IPC: B01J2/08 ,  B01J21/04 ,  B01J35/10 ,  C01F7/02 ,  C01F7/14 ,  B01J35/08

CPC classification number: B01J21/04 ,  B01J2/08 ,  B01J35/10 ,  C01F7/02 ,  C01F7/141 ,  B01J35/1019 ,  B01J35/1042 ,  B01J35/1061 ,  B01J35/109 ,  C01P2002/02 ,  C01P2002/60 ,  C01P2002/70 ,  C01P2004/32 ,  C01P2004/61 ,  C01P2006/12 ,  C01P2006/13 ,  C01P2006/14 ,  C01P2006/16 ,  C01P2006/21 ,  Y10S502/503

Abstract: Spheroidal alumina particulates having bifold porosity are prepared by (i) intimately admixing, at a pH of less than about 7.5, (a) a sol of a member selected from the group consisting of ultrafine boehmite and pseudo-boehmite, said sol being devoid of amorphous alumina and the concentration by weight thereof, in content by weight of Al.sub.2 O.sub.3, being between 5 and 25%, with (b) from 30 to 95% by weight, based upon the total solids content of the admixture, of spheroidal alumina particulates essentially completely in at least one of the phases eta, gamma, delta and theta, such particulates having a micropore volume ranging from about 0.4 to 1 cm.sup.3 /g, a specific surface ranging from about 100 to 350 m.sup.2 /g, and particle diameters ranging from about 1 to 50 microns; (ii) prilling said intimate admixture into spheroidal particulates and gelling the same; and then, (iii) recovering, drying and calcining said gelled particulates at a temperature of from 550.degree. to 1100.degree. C.The resultant particulates having bifold porosity are useful as catalysts or catalyst supports.

Abstract translation: 通过（i）在小于约7.5的pH下，（a）选自由超细勃姆石和假勃姆石组成的组中的成员的溶胶紧密混合，制备具有双重孔隙度的球状氧化铝颗粒，所述溶胶不含 无定形氧化铝及其以Al 2 O 3的重量含量为5-25％的重量浓度，（b）基于混合物的总固体含量为30至95重量％，基本上为球形氧化铝颗粒 完全在相中的至少一个阶段eta，γ，δ和θ，这样的微粒具有约0.4至1cm 3 / g的微孔体积，约100至350m 2 / g的比表面积， 约1至50微米; （ii）将所述紧密混合物造粒成球状颗粒并凝胶化; 然后，（iii）在550℃至1100℃的温度下回收，干燥和煅烧所述凝胶状颗粒。所得到的具有二叉孔隙的颗粒可用作催化剂或催化剂载体。

公开(公告)号：US4089932A

公开(公告)日：1978-05-16

申请号：US668615

申请日：1976-03-19

Applicant: Yazaemon Morita ,  Yukitoshi Kogure ,  Akira Nomura

Inventor： Yazaemon Morita ,  Yukitoshi Kogure ,  Akira Nomura

IPC: C01B33/152 ,  B01J2/08 ,  C01B33/154 ,  C01B33/16 ,  C01B33/12

CPC classification number: B01J2/08 ,  C01B33/1546 ,  C01B33/166

Abstract: A process for the production of spherical silica gel which comprises emulsifying water glass in a dispersion medium composed of a polar solvent and a non-polar solvent and gelling the water glass while maintaining it in emulsified state.

Abstract translation: 制备球状硅胶的方法，其包括在由极性溶剂和非极性溶剂组成的分散介质中乳化水玻璃，并将水玻璃保持乳化状态。

公开(公告)号：US4063856A

公开(公告)日：1977-12-20

申请号：US702539

申请日：1976-07-06

Applicant: Chester J. Dziedzic

Inventor： Chester J. Dziedzic

IPC: B01J2/08 ,  C30B11/10 ,  B29C13/00

CPC classification number: B01J2/08 ,  C30B11/10

Abstract: Spherical particulates containing inorganic material are produced by forming a slurry of particles in an aqueous solution of a gellable organic binder, introducing droplets of the slurry into a two-phase liquid containing an upper hydrophobic phase for forming and maintaining the droplets in spherical form, and a lower ionic phase containing divalent or trivalent metal cations for promoting gellation of the organic binder, thereby converting the slurry droplets into substantially self-supporting spheres of particles dispersed in the gelled binder. Upon separation from the two-phase liquid and one or more optional heat treatments to remove the binder, to convert precursors into the desired final inorganic form, or to strengthen or densify the spheres, such spheres are useful, for example, as starting materials for single crystal growth from a melt.

Abstract translation: 含有无机材料的球形颗粒通过在可凝胶的有机粘合剂的水溶液中形成颗粒浆料而制成，将浆料的液滴引入含有上部疏水相的两相液体中，以形成和保持液滴为球形，以及 包含二价或三价金属阳离子的较低离子相，用于促进有机粘合剂的凝胶化，从而将浆液液滴转化成分散在胶凝粘合剂中的基本上自支撑的颗粒团。 在分离两相液体和一种或多种任选的热处理以除去粘合剂时，将前体转化成所需的最终无机形式，或加强或致密化球体，这样的球体可用于例如作为 从熔体中单晶生长。

公开(公告)号：US4048090A

公开(公告)日：1977-09-13

申请号：US637635

申请日：1975-12-04

Applicant: Kare Hannerz

Inventor： Kare Hannerz

IPC: B01J2/08 ,  G21C3/62

CPC classification number: G21C3/623 ,  B01J2/08 ,  Y02E30/38

Abstract: A mixed oxide fuel of uranium dioxide and plutonium dioxide is in the form of mixed oxide particles with a diameter of 0.2 to 2 mm. A surface layer of the particles consists of UO.sub.2 with a plutonium content per unit of volume of at most 15 per cent of the average plutonium content per unit of volume of the particle. The particles are formed by extrusion through a concentric nozzle. A water emulsion of uranium dioxide is first pumped through the inner nozzle, after which a water emulsion of plutonium dioxide is pumped through the outer nozzle. Thereafter a water emulsion of uranium dioxide is pumped through the outer nozzle to surround the plutonium dioxide layer and then water emulsion of uranium dioxide is pumped through the first nozzle to complete the enclosure of the plutonium dioxide.

Abstract translation: 二氧化铀和二氧化钚的混合氧化物燃料是直径为0.2至2mm的混合氧化物颗粒的形式。 颗粒的表面层由UO2组成，每单位体积的钚含量至多为每单位体积颗粒的平均钚含量的15％。 颗粒通过挤出通过同心喷嘴形成。 首先将二氧化铀的水乳液泵入内部喷嘴，然后通过外部喷嘴泵送二氧化钚水乳液。 此后，将二氧化铀的水乳液通过外部喷嘴泵送以包围二氧化钚层，然后将二氧化铀的水乳液泵送通过第一喷嘴以完成钚二氧化物的封闭。

公开(公告)号：US4006848A

公开(公告)日：1977-02-08

申请号：US556312

申请日：1975-03-07

Applicant: Josef Cramer ,  Willi Hannen

Inventor： Josef Cramer ,  Willi Hannen

IPC: B01J2/08 ,  C04B35/51 ,  G01F11/06

CPC classification number: C04B35/51 ,  B01J2/08

Abstract: An apparatus for producing spherical uranium dioxide nuclear fuel particlesaving diameters of the order of several hundred microns comprises a source of an aqueous solution of uranyl nitrate, urea and hexamethylenetetramine, a container of a hot organic liquid, i.e. paraffin in which water is insoluble, and a droplet-forming dispenser connected between the source and the container. The dispenser has a constricted nozzle disposed above the free surface of the hot liquid and a piston displaceable in the passage leading thereto by a crank mechanism imparting periodic movement to the piston. The piston has a conical tip which cooperates with a seat along the passage having a larger flow cross-section than the nozzle orifice.

Abstract translation: 用于制造直径为几百微米的球形二氧化铀核燃料颗粒的装置包括硝酸铀酰，尿素和六亚甲基四胺的水溶液源，即热有机液体的容器，即其中不溶于水的石蜡， 以及连接在源和容器之间的液滴形成分配器。 分配器具有设置在热液体的自由表面上方的收缩嘴，以及可在通过向活塞施加周期性运动的曲柄机构通向其的通道中移动的活塞。 活塞具有锥形尖端，其与具有比喷嘴孔更大的流动横截面的通道配合。

公开(公告)号：US3993578A

公开(公告)日：1976-11-23

申请号：US444773

申请日：1974-02-22

Applicant: Panayotis Gerontopoulos ,  Carlo Fantuz

Inventor： Panayotis Gerontopoulos ,  Carlo Fantuz

IPC: C01G43/01 ,  B01J2/02 ,  B01J2/04 ,  B01J2/08 ,  B27L1/05 ,  C01G43/025 ,  C04B35/628 ,  G21C3/62 ,  G21C3/54

CPC classification number: G21C3/62 ,  B01J2/08 ,  Y02E30/38

Abstract: In the preparation of microspheres of nuclear fuel by feeding droplets of an aqueous solution of a salt of a metal constituting the nuclear fuel that is precipitated by a basic medium and a resin that increases in viscosity in the presence of an alkali into an aqueous alkaline solution so that spheroids are formed therefrom which are then dried and calcined, the geometrical properties of those spheroids are controlled by thermostating the feed solution so that the droplets which are fed into the alkaline solution have a predetermined temperature.

Abstract translation: 在通过将由碱性介质沉淀的构成核燃料的金属的盐水溶液和在碱存在下使粘度增加的树脂的水溶液滴入碱性水溶液的制备中而制备核燃料的微球时， 从而由此形成球体，然后将其干燥和煅烧，通过恒温进料溶液来控制那些球体的几何性质，使得进料到碱性溶液中的液滴具有预定温度。

公开(公告)号：US3972990A

公开(公告)日：1976-08-03

申请号：US582525

申请日：1975-05-30

Applicant: Kenneth D. Vesely

Inventor： Kenneth D. Vesely

IPC: B01J2/08 ,  B01J21/04 ,  B01J35/10 ,  C01F7/02

CPC classification number: B01J2/08 ,  B01J21/04 ,  B01J35/10 ,  B01J35/1042 ,  B01J35/1047 ,  B01J35/1061

Abstract: A method of preparing spheroidal refractory inorganic oxide particles characterized by low bulk density in combination with high micropore volume is disclosed. The particles, especially low bulk density - high micropore volume alumina particles, are useful as a support or carrier material for catalytically active materials to yield an improved hydrocarbon conversion catalyst.

Abstract translation: 公开了一种以低体积密度结合高微孔体积制备球状耐火无机氧化物颗粒的方法。 颗粒，特别是低堆积密度 - 高微孔体积氧化铝颗粒，可用作催化活性材料的载体或载体材料，以产生改进的烃转化催化剂。

公开(公告)号：US3957933A

公开(公告)日：1976-05-18

申请号：US555694

申请日：1975-03-05

Applicant: Walter Egli ,  William H. Bailey, Jr ,  David F., Leary ,  Richard J. Lansley

Inventor： Walter Egli ,  William H. Bailey, Jr ,  David F., Leary ,  Richard J. Lansley

IPC: B01J2/08 ,  G21C3/62 ,  B29B1/03

CPC classification number: B01J2/08

Abstract: Apparatus is described for producing microspherical particles. Also described is a method for operating said apparatus. A droplet generator dispenses uniform spherical droplets into a gelling column which is sealed at both ends to prevent entry of air thereinto. A gelling liquid and a gelling gas are provided in the column, and a further gas, which is of a density lower than that of the gelling gas, is introduced to the region above the gelling gas. At the interface between the gelling gas and the further gas, the gases are withdrawn from the gelling column.

公开(公告)号：US3888787A

公开(公告)日：1975-06-10

申请号：US28809872

申请日：1972-09-11

Applicant: KERNFORSCHUNGSANLAGE JUELICH

Inventor： HEIN KURT ,  ZIMMER ERICH

IPC: B01J2/08 ,  G21C3/62 ,  G21C21/00

CPC classification number: G21C3/623 ,  B01J2/08 ,  Y02E30/38

Abstract: A method of producing ball-shaped metallic oxide or metallic carbide particles which includes the steps of introducing an aqueous solution of a metallic nitrate or metallic chloride or a mixture or a colloidal solution of such metallic nitrates or chlorides dropwise into an organic phase in a column which comprises a lower phase of an aqueous ammonia solution and an upper phase of a ketone or mixture of ketones.

公开(公告)号：US3856900A

公开(公告)日：1974-12-24

申请号：US31903572

申请日：1972-12-27

Applicant: GAF CORP

Inventor： ERB E

IPC: C08L27/00 ,  B01J2/08 ,  B29B9/00 ,  B29B9/12 ,  C08J3/12 ,  C08J3/16 ,  C08J3/20 ,  C08L1/00 ,  C08L27/06 ,  B29B1/00 ,  B29C23/00

CPC classification number: C08J3/16 ,  B01J2/08 ,  C08J2327/06 ,  Y10S264/60

Abstract: Plasticized polyvinyl chloride particles are prepared by dispersing a plasticol in an agitated liquid medium immiscible therewith maintained at about 100*-140*F. The liquid medium is agitated so that the plastisol is dispersed as small droplets of essentially spherical form having a particle size not exceeding about 0.03 inch. The liquid medium is then heated to a temperature above about 150*F, e.g., up to about 350*F but advantageously to a temperature up to the boiling point of the liquid medium, to achieve gelation of the plastisol droplets, which are then separated from the liquid medium. The resulting plasticized particles are of essentially spherical form and have an advantageously narrow particle size distribution range. The particles are essentially dust free and have highly desirable free flowing characteristics. Blends of two or more plastisol compositions, e.g., of different color, can readily be obtained.

Abstract translation: 塑化的聚氯乙烯颗粒是通过将塑胶分散在不混溶的搅拌液体培养基中制备的，保持在约100-140°F。搅拌液体介质，使得增塑溶胶以基本上不具有粒径的基本上为球形的小液滴分散 超过约0.03英寸。 然后将液体介质加热至高于约150°F的温度，例如高达约350°F，但有利地达到液体介质沸点的温度，以实现增塑溶胶液滴的凝胶化，然后将其分离 从液体介质。 得到的增塑颗粒基本上是球形的并且具有有利的窄的粒度分布范围。 颗粒基本上是无尘的并且具有非常期望的自由流动特性。 可以容易地获得两种或更多种增塑溶胶组合物的混合物，例如不同颜色的混合物。