Radioactive Patents (Class 75/344)
-
Patent number: 10870153Abstract: This invention relates to a method for controlling exothermic reactions between metal chlorides of Zn, V, Cr, Co, Sn, Ag, Ta, Ni, Fe, Nb Cu, Pt, W, Pd, and Mo, and Al and the use of the method for preparation of metallic alloys and compounds based on base metals Zn, V, Cr, Co, Sn, Ag, Ta, Ni, Fe, Nb Cu, Pt, W, Pd, and Mo. The method provides for a mixture of precursor chemicals including at least one solid base metal chloride to be mixed and reacted exothermically with a control powder based on Zn, V, Cr, Co, Sn, Ag, Ta, Ni, Fe, Nb Cu, Pt, W, Pd, and Mo and then reacting the resulting intermediates with an Al scavenger. Reduction is carried out in a controlled manner to regulate reaction rates and prevent excessive rise in the temperature of the reactants and the reaction products.Type: GrantFiled: July 6, 2017Date of Patent: December 22, 2020Assignee: KINALTEK PTY. LTD.Inventor: Jawad Haidar
-
Patent number: 10308523Abstract: A process for water removal and/or recycling of sodium sulphate and/or sodium dithionate containing liquors derived from processing a cobalt resource derived from components of lithium ion batteries comprising steps of deriving from the cobalt resource a solution containing cobalt sulphate and cobalt dithionate, precipitation of cobalt as cobaltous carbonate or cobaltous hydroxide followed by removal thereof from the liquor, crystallization of sodium sulphate and sodium dithionate and removal of the resulting crystals, followed by heating of the crystals to anhydrous sodium sulphate, sulphur dioxide and water and then separating the anhydrous sodium sulphate.Type: GrantFiled: March 14, 2019Date of Patent: June 4, 2019Assignee: Rocher Manganese, Inc.Inventors: Norman Chow, Joey Chung-Yen Jung, Anca-Mihaela Nacu, Douglas Dale Warkentin
-
Publication number: 20150118496Abstract: The present application provides a method for fabricating hollow metal nano particles and hollow metal nano particles fabricated by the same.Type: ApplicationFiled: January 9, 2015Publication date: April 30, 2015Inventors: Jun Yeon CHO, Sang Hoon KIM, Gyo Hyun HWANG, Kwanghyun KIM
-
Publication number: 20140290436Abstract: A bimetallic nanowire synthesis method is provided. The method includes adding first and second solutions into a vessel containing a porous template with the first solution containing first and second reagents added on one side of the porous template and the second solution added on an opposite side of the porous template. The first reagent includes a first salt of at least one of a transition metal, an actinide metal and a lanthanide metal. The second reagent includes a second salt of at least one of a transition metal, an actinide metal and a lanthanide metal. The second solution contains a reducing agent.Type: ApplicationFiled: March 26, 2013Publication date: October 2, 2014Applicant: The Research Foundation for The State University of New YorkInventors: Stanislaus S. WONG, Christopher KOENIGSMANN
-
Publication number: 20130336833Abstract: The invention relates to a powder of an alloy based on uranium and molybdenum in a metastable ? phase, which is formed of particles which have an elongation index at least equal to 1.1, a non-zero closed porosity value and which are composed of grains having a molybdenum content, for which the variations within the same grain are of at most 1% by mass. It also relates to a method allowing preparation of this alloy powder as well as to the use of said powder for manufacturing nuclear fuels and targets for producing radioisotopes. Applications: Manufacturing of nuclear fuels, notably for experimental nuclear reactors; manufacturing of targets for producing radioisotopes, notably for the medical industry.Type: ApplicationFiled: December 23, 2011Publication date: December 19, 2013Applicants: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES, UNIVERSITE DE RENNES 1Inventors: Jerome Allenou, Francois Charollais, Meryl Brothier, Xaviere Iltis, Olivier Tougait, Mathieu Pasturel, Henri Noel
-
Publication number: 20130333519Abstract: The invention relates to a method for preparing a powder of an alloy based on uranium and molybdenum in a metastable ? phase, which comprises: a) putting at least one first reagent selected from uranium oxides and mixtures thereof, uranium fluorides and mixtures thereof, into contact with a second reagent consisting in molybdenum and a third reagent consisting in a reducing metal, the first, second and third reagents being in a divided form; b) reacting the reagents at a temperature?the melting temperature of the third reagent and under an inert atmosphere, whereby this reaction leads to the formation of the alloy comprising uranium and molybdenum in the form of a powder, for which the particles are covered with a reducing metal oxide or fluoride layer; c) cooling the so formed powder at a rate at least equal to 450° C./hour; and d) removing the reducing metal oxide or fluoride layer which covers the particles of the powder of the alloy comprising uranium and molybdenum.Type: ApplicationFiled: December 23, 2011Publication date: December 19, 2013Applicant: UNIVERSITE DE RENNES 1Inventors: Jerome Allenou, Meryl Brothier, Francois Charollais, Xaviere Iltis, Olivier Tougait, Mathieu Pasturel, Henri Noel
-
Patent number: 8066861Abstract: A method for producing metal powder is provided the comprising supplying a molten bath containing a reducing agent, contacting a metal oxide with the molten bath for a time and at a temperature sufficient to reduce the metal in the metal oxide to elemental metal and produce free oxygen; and isolating the elemental metal from the molten bath.Type: GrantFiled: February 14, 2008Date of Patent: November 29, 2011Assignee: The United States of America as represented by the Department of EnergyInventor: Jong-Hee Park
-
Patent number: 7192466Abstract: Nuclear metal or alloy particle preparation method and device; said device comprising: means to prepare a fluid mass of the metal or alloy by melting; means to put the fluid mass of the metal or metal alloy in the form of a molten metal or alloy stream; means to impart a centrifugal rotation movement to a quenching fluid and carry out the atomisation of the molten metal or metal alloy stream particles and the quick quenching of the particles; means to melt the nuclear metal or metal alloy in an inert gas atmosphere, and means to surround the molten metal or metal alloy stream by a neutral gas envelope until quenching.Type: GrantFiled: September 20, 2001Date of Patent: March 20, 2007Assignees: Framatome Anp, Compagnie pour l'etude et la Realisation de Tour FiatInventors: Stephane Revol, Regis Baccino
-
Publication number: 20030172776Abstract: Nuclear metal or alloy particle preparation method and device; said device comprisingType: ApplicationFiled: March 6, 2003Publication date: September 18, 2003Inventors: Stephane Revol, Regis Baccino
-
Publication number: 20020152841Abstract: An aluminum powder is mixed with a neutron absorber powder through cold isostatic press to form a preliminary molding. The preliminary molding is then subjected to sintering under no pressure in vacuum. After sintering, a billet is subjected to induction heating and hot extrusion to form a square pipe.Type: ApplicationFiled: April 19, 2002Publication date: October 24, 2002Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Katsunari Ohsono, Kazuo Murakami, Yasuhiro Sakaguchi, Toshiro Kobayashi, Toyoaki Yasui
-
Publication number: 20020012821Abstract: Magnetic composites exhibit distinct flux properties due to gradient interfaces. The composites can be used to improve fuel cells and batteries and effect transport and separation of different species of materials, for example, transition metal species such as lanthanides and actinides. A variety of devices can be made utilizing the composites including a separator, an electrode for channeling flux of magnetic species, an electrode for effecting electrolysis of magnetic species, a system for channeling electrolyte species, a system for separating particles with different magnetic susceptibilities, improved fuel cells, batteries, and oxygen concentrators. Some composites can be used to make a separator for distinguishing between two species of materials and a flux switch to regulate the flow of a chemical species. Some composites can control chemical species transport and distribution. Other composites enable ambient pressure fuel cells having enhanced performance and reduced weight to be produced.Type: ApplicationFiled: June 29, 2001Publication date: January 31, 2002Applicant: UNIVERSITY OF IOWA RESEARCH FOUNDATIONInventors: Johna Leddy, Sudath Amarasinghe, Lois Anne Zook
-
Patent number: 6210461Abstract: This invention provides improved production, continuous or batch, especially of metals which have been produced by versions of the Kroll and Ames processses. This list includes titanium, zirconium, hafnium, vanadium, niobium, tantalum, rhenium, molybdenum, tungsten, and uranium. It also offers a process for growing particular shapes of metallic crystals, e.g., needlelike. This invention is intended to be less expensive to operate and to provide a superior product than from Kroll batch processing, as often used: For the continuous metal production, circulating molten salt supports two principal reaction stages, which together allow continuous metal production: Titanium powder production with one possible set of reactants may be used as an example for the group of metals listed: In Stage 1 a pumped solution of titanium ions (Ti++) dissolved in molten salt (e.g., MgCl2—KCl) flows onto, then down beside, molten magnesium that floats on molten salt below.Type: GrantFiled: August 10, 1998Date of Patent: April 3, 2001Inventor: Guy R. B. Elliott
-
Patent number: 6110437Abstract: A thermal decomposition method useful in the nuclear industry for preparing a powdered mixture of metal oxides having suitable reactivity from nitrates thereof in the form of an aqueous solution or a mixture of solids. According to the method, the solution or the mixture of solids is thermomechanically contacted with a gaseous fluid in the contact area of a reaction chamber, said gaseous fluid being fed into the reaction chamber at the same time as the solution or mixture at a temperature no lower than the decomposition temperature of the nitrates, and having a mechanical energy high enough to generate a fine spray of the solution or a fine dispersion of the solid mixture, and instantly decompose the nitrates. The resulting oxide mixtures may be used to prepare nuclear fuels.Type: GrantFiled: March 2, 1999Date of Patent: August 29, 2000Assignee: Comurhex (S.A.)Inventors: Gilbert Schall, Sylvie Davied, Robert Faron, deceased
-
Patent number: 5912217Abstract: An improved diamond sintered body having an excellent breakage resistance, corrosion resistance, heat resistance and wear resistance and capable of being sintered at a relatively low pressure and low temperature can be provided. The feature thereof consists in a diamond sintered body comprising 50 to 99.9 volume % of diamond and the balance of a binder phase consisting of a single or mixed phase of a compound (C) or composite (C') of at least one element (A) selected from the group consisting of rare earth elements, Group 3B, 4A, 4B and 6B elements of Periodic Table, iron group, Mn, V, alkali metals and alkaline earth metals with a phosphorus compound (B), or of the above described compound (C) or composite (C') with an oxide of (A).Type: GrantFiled: September 15, 1995Date of Patent: June 15, 1999Assignee: Sumitomo Electric Industries, Ltd.Inventors: Hitoshi Sumiya, Shuichi Satoh, Takeru Nakashima, Yasuyuki Kanada
-
Patent number: 5476641Abstract: A method of separating and recovering Pu and Np from a Pu- and Np-containing nitric acid solution. The method comprises the steps of subjecting a nitric acid solution containing Pu and Np to valence adjustment by adding a reducing agent consisting of hydroxylamine nitrate and hydrazlne to said nitric acid solution so as to reduce Pu and Np in said nitric acid solution to Pu (III) and Np (IV), respectively; adjusting a nitric acid concentration of said nitric acid solution after said valence adjustment to 6 to 8 M; bringing said nitric acid solution after said nitric acid concentration adjustment into contact with a strong basic anion exchange resin so as to cause Np to be selectively adsorbed by said resin and to separate and recover Pu as a plutonium nitrate solution; and eluting said adsorbed Np (IV) by using diluted nitric acid of 1 M or below so as to recover Np as a neptunium nitrate solution.Type: GrantFiled: August 4, 1994Date of Patent: December 19, 1995Assignee: Doryokuro Kakunenryo Kaihatsu JigyodanInventors: Akio Todokoro, Yoshiyuki Kihara, Takashi Okada
-
Patent number: 5393322Abstract: A process for recovering palladium, rhodium and ruthenium from aqueous solutions deriving from the treatment of nuclear fuels and containing also iron and nickel, by reducing carbonylation with carbon monoxide at a pressure up to 1 atmosphere in a nitric acid solution at a pH of between 2 and 4 and at a temperature of between room and 100.degree. C. and reaction times of from 6 to 100 hours.Type: GrantFiled: September 4, 1992Date of Patent: February 28, 1995Assignee: C.E.S.E.C. Centro Europeo Studi Economici e Chimici SrlInventor: Renato Ugo
-
Patent number: H1184Abstract: A method for making uranium-tungsten alloy of high strength comprising raly chilling a molten solution of tungsten in uranium to form a ribbon. Subsequent to pulverizing and consolidation, heating effects a precipitation of tungsten in the uranium to effect significant strengthening. A strengthened uranium with 1/2-5%, by weight of tungsten is particularly useful for KE penetrators.Type: GrantFiled: August 12, 1991Date of Patent: May 4, 1993Assignee: The United States of America as represented by the Secretary of the ArmyInventors: Ravi Batra, Sheldon Cytron, Jerry C. LaSalle