U.S. patents available from 1976 to present.
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Class 423/253 - Uranium compound


Subclass of Class 423 - Chemistry of inorganic compounds
Definition: Products or processes which the compound comprises uranium.
No. of patents: 94
Last issue date: 12/08/2009


    3  
NumberTitleIssue Date
4112055Method of fabrication of uranium oxide UO2 by the dry processing route and a device for the practical application of the method
In a first step, uranium hexafluoride gas is reacted with steam in a first region of a vessel. In a second step, the oxyfluoride UO2 F2 obtained in the first step is converted to UO2 in a two-stage reduction process in whi...
09/05/1978
4093783Novel formulations M2 UO2 F2 and their use in electrochemical cells
The present invention is directed to compositions of matter having the formula M2 UO2 F2 where each M is any alkali metal ion or mixtures thereof. The present invention is also directed to electrochemical cells having anod...
06/06/1978
4059539(U,Zr)N alloy having enhanced thermal stability
A nitrided alloy of uranium and zirconium is provided which consists of a single-phase UN structure containing a dissolved amount of Zr as ZrN, effective to inhibit dissociation of the UN phase....
11/22/1977
4053559Production of uranium dioxide
A continuous, four stage fluidized bed process for converting uranium hexafluoride (UF6) to ceramic-grade uranium dioxide (UO2) powder suitable for use in the manufacture of fuel pellets for nuclear reactors is disclosed. The process...
10/11/1977
4035468Uranium dioxide process
Process for the preparation of fine particle size uranium dioxide from a uranium trioxide feed comprising the following steps: A. reacting solid uranium trioxide with aqueous ammonium nitrate to form an insoluble ammonium uranate B. neutralizing the thus forme...
07/12/1977
4020146Production of uranium dioxide
A three stage fluidized bed process for converting uranium hexafluoride (UF6) to a ceramic-grade uranium dioxide (UO2) powder by first, reacting hydrogen and steam with UF6 in a first fluidized bed in a temperature range o...
04/26/1977
4012489Process for the preparation of uranium dioxide
An actinide dioxide, e.g., uranium dioxide, plutonium dioxide, neptunium dioxide, etc., is prepared by reacting the actinide nitrate hexahydrate with sodium dithionite as a first step; the reaction product from this first step is a novel composition of ma...
03/15/1977
3998925Production of ammonium diuranate
Process and apparatus for producing ammonium diuranate (ADU) from uranium hexafluoride (UF6) wherein gaseous UF6 is first hydrolyzed, then partially neutralized with aqueous ammonium hydroxide to a pH of from 5 to 6, the resultant so...
12/21/1976
3980757Process for uranium separation and preparation of UO4.2NH.sub.3.2HF
A process for treating the aqueous effluents that are produced in converting gaseous UF6 (uranium hexafluoride) into solid UO2 (uranium dioxide) by way of an intermediate (NH4)4 UO2 (CO3)
09/14/1976
3979499Method for reducing uranium tetrafluoride
A pulsed flow process for the reduction of UF6 where the process may be continuous or batch starting without a seed bed. The initial amplitude and frequency of the pulsed flow is altered as a bed of particle-form material is formed and thereaft...
09/07/1976
3978194Production of sized particles of uranium oxides and uranium oxyfluorides
A process for converting uranium hexafluoride (UF6) to uranium dioxide (UO2) of a relatively large particle size in a fluidized bed reactor by mixing uranium hexafluoride with a mixture of steam and hydrogen and by preliminary reacti...
08/31/1976
3969477Method of defluorinating uranium compositions in a calciner
A method of dehalogenating a particulate composition in a calciner having a heating zone and a cooling zone is presented in which a dehalogenating atmosphere flows through the calciner, including a constricted zone in the calciner, countercurrent to the m...
07/13/1976
3966873Uranium complex recycling method of purifying uranium liquors
Uranium is separated from contaminating cations in an aqueous liquor containing uranyl ions. The liquor is mixed with sufficient recycled uranium complex to raise the weight ratio of uranium to said cations preferably to at least about three. The liquor i...
06/29/1976
3966872Coupled cationic and anionic method of separating uranium
Uranium is separated from contaminating metal ions in an aqueous feed liquor containing the uranyl ion. The liquor is extracted with a first, non-interfering, waterimmiscible, organic solvent containing a reagent which reacts with the uranyl ion to form a...
06/29/1976
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