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7390392 |
Method of in-situ monitoring a reduction of uranium oxides by lithium metal
Disclosed is a method of in-situ monitoring a reduction process of uranium oxides by lithium metal, wherein a conversion yield of uranium metal from uranium oxides upon production of uranium metal...
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7267754 |
Porous membrane electrochemical cell for uranium and transuranic recovery from molten salt electrolyte
An improved process and device for the recovery of the minor actinides and the transuranic elements (TRU's) from a molten salt electrolyte. The process involves placing the device, an electrically...
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7238270 |
Process for the dissolution of actinic oxides
The invention provides a process for dissolving actinic oxides, the process comprising performing the steps of (a) introducing the actinic oxides into a solution of nitric acid; (b) treating the...
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7070685 |
Method and device for decontaminating water which contains metal and/or is radioactively contaminated
The invention relates to an efficient process and device for the decontamination of waters polluted with heavy metals, semimetals and/or radionuclides by cation exchange and electrochemical...
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7029568 |
Negative ion generating medium and its manufacturing method
A negative ion generating medium for generating negative ions from the surface of a mother material made of aluminum or aluminum alloy. The negative ion generating medium has the mother material of...
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6911135 |
Process for separating metals
A method for separating a metal from a composition including the metal involves forming an electrolytic cell in which the anode comprises a composition including the metal. The electrolyte is an...
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6767444 |
Method for processing spent (TRU, Zr)N fuel
A new process for recycling spent nuclear fuels, in particular, mixed nitrides of transuranic elements and zirconium. The process consists of two electrorefiner cells in series configuration. A...
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6616826 |
Electrolysis apparatus and methods using urania in electrodes, and methods of producing reduced substances from oxidized substances
The present invention includes uranium-bearing ceramic phase electrodes and electrolysis apparatus and electrolysis methods featuring same, including methods of metal production and the like by the...
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6156183 |
Method of processing spent reactor fuel with magnesium alloy cladding
A spent reactor fuel processing method is provided for recovering at least any one of metallic nuclear fuel materials, in which the reactor fuel is composed by covering the metallic nuclear fuel...
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5851500 |
Removal of uranium contamination from magnesium fluoride slag
Magnesium fluoride slag contaminated with metallic uranium or uranium compounds is treated by digestion with potassium hydroxide to soluble potassium fluoride and insoluble magnesium hydroxide. The...
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5776330 |
Electrolytic decontamination methods and apparatus
Apparatus and methods for decontaminating surfaces are disclosed. A housing is configured with first and second channels and first and second fluid pathways in fluid communication therewith,...
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5752206 |
In-situ decontamination and recovery of metal from process equipment
Processes for in-situ decontamination and recovery of metal from radioactive-contaminated metal which is contained in process equipment, including ancillary systems of process equipment, comprise...
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5745835 |
Process and apparatus for dissolving a mixture of oxides of uranium and of plutonium
A process and apparatus for dissolving a mixed oxide or mixture of oxides of uranium and plutonium. The powder is added with nitric acid to a chamber to dissolve uranium oxide, and the solution is...
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5676819 |
In situ removal of contamination from soil
A process of remediation of cationic heavy metal contamination from soil utilizes gas phase manipulation to inhibit biodegradation of a chelating agent that is used in an electrokinesis process to...
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5650053 |
Electrorefining cell with parallel electrode/concentric cylinder cathode
A cathode-anode arrangement for use in an electrolytic cell is adapted for electrochemically refining spent nuclear fuel from a nuclear reactor and recovering purified uranium for further treatment...
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5633423 |
Consumable anode, electrodissolution process applied to the decontamination of slightly radioactive liquid effluents and apparatus for performing the process
According to the invention, a consumable anode constituted by a metal alloy incorporates between 20 and 70 wt. % iron, between 20 and 40 wt. % cobalt and between 5 and 30 wt. % aluminium. To these...
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5458745 |
Method for removal of technetium from radio-contaminated metal
Technetium is separated from radio-contaminated metal in a three-step process. The contaminated metal is dissolved in an acid solution; the technetium, present in the resultant solution as...
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5454917 |
Apparatus and process for recovering metal from an aqueous solution
The invention is an apparatus and process for recovering metal from a solution. This apparatus is a structure having an anode formed from a plurality of reducing metal elements and a cathode formed...
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5380406 |
Electrochemical method of producing eutectic uranium alloy and apparatus
An apparatus and method for continuous production of liquid uranium alloys through the electrolytic reduction of uranium chlorides. The apparatus includes an electrochemical cell formed from an...
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5141723 |
Uranium chloride extraction of transuranium elements from LWR fuel
A process of separating transuranium actinide values from uranium values present in spent nuclear oxide fuels containing rare earth and noble metal fission products as well as other fission...
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H000659 |
Process for electrolytically preparing uranium metal
A process for making uranium metal from uranium oxide by first fluorinating uranium oxide to form uranium tetrafluoride and next electrolytically reducing the uranium tetrafluoride with a carbon...
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4668346 |
Ion concentration analysis and apparatus employing standard addition techniques
Analysis of a series of samples is carried in an electrode cell (10) containing an ion-selective electrode (11). A base solution, to which a trace of the ion to be measured has previously been...
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4619744 |
Recovery of heavy metals from aqueous solutions
Process for the recovery of heavy metals from aqueous solution by reaction with soluble, functionally-substituted polymer upon which the heavy metal loads, and optionally crosslinks by interaction...
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4371505 |
Process for the recovery of uranium contained in an impure phosphoric acid
The invention concerns a process for the recovery of the uranium contained in an impure phosphoric acid. The impure acid is treated with an organic phase capable of extracting U (VI), and the...
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4341602 |
Extraction of uranium using electrolytic oxidization and reduction in bath compartments of a single cell
The invention relates to a process for the recovery and the concentration of uranium (VI) contained in an organic phase. The organic phase is treated continuously in a contact zone with an aqueous...
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4338125 |
Method for the preparation of uranium compounds via electrolytic amalgamation of uranium ion directly from an aqueous solution
The preparation of nuclear fuels such as uranium dioxide, carbide and nitride employing the ammonium urante, (NH 4 ) 2 U 2 O 7 , as starting material usually must undergo a series of chemical and...
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4313800 |
Method of reconditioning radioactive filtrate
Reconditioning ammonium nitrate-containing radioactive filtrates as produced in AUC or AU Pu C process by feeding preheated filtrate into the cathode chamber of an electrolysis cell containing...
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4279705 |
Process for oxidizing a metal of variable valence by constant current electrolysis
A process for oxidizing a metal of variable valence to a higher valence state by electrochemical means. More particularly, a process for oxidizing a metal of variable valence, such as, for example,...
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4237100 |
Isotopic enrichment of uranium with respect to an isotope
A process for chemical enrichment of uranium with respect to a lighter one of its isotopes. The process consists in contacting uranium of valence state III and uranium of valence state IV, or a...
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4028199 |
Method of producing metal powder
A metal powder e.g. copper or zinc, is produced from a dilute aqueous solution of the metal by subjecting the dilute aqueous solution to electrolysis in a cell having a rotating cylinder cathode...
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4021313 |
Method for purifying actinides which are in low oxidation states
A method is provided for purifying actinides which are present in a low oxidation state in aqueous solution. The actinides are purified of fission products by extracting the actinides from aqueous...
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4004987 |
Method for the preparation of rare and precious metals by electrolytical amalgamation using ion exchange membrane
Metal amalgams are prepared electrolytically by using an ion exchange membrane for the purpose of adjusting pH during the course of electrolysis. The subsequent thermal decomposition of the thereby...
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3957615 |
Apparatus for conducting electrolytic reactions
An electrolytic cell includes a vessel defining an electrolysis chamber and a cover for the vessel. A tubular diaphragm divides the vessel into a cathode chamber extending inwardly from the...
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3932225 |
Process for separately recovering uranium, transuranium elements, and fission products of uranium from atomic reactor fuel
Spent reactor fuel elements are dissolved in dilute nitric acid. After addition of acetic acid as a complexing agent, the nitric acid is partly decomposed and the mixture subjected to electrolysis...
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3912801 |
Solvent extraction of metals with a cyclic alkylene carbonate
Cyclic organic carbonates have been found, along with mixtures of same with other organic liquids that are miscible therewith, to extract the following metals in stable complex or simple salt form...
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3819231 |
ELECTROCHEMICAL METHOD OF MINING
An in situ electrochemical method for extracting the mineral values from an ore body without greatly disturbing or polluting the ecology of the area. Holes are drilled into the ore body which is...
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3616276 |
PROCESS FOR CHANGING THE VALENCE OF A METAL OF VARIABLE VALENCE IN AN ORGANIC SOLUTION
A process for changing the valence of a metal of variable valence in an organic solution whereby a dispersion is formed by agitating the organic solution with an immiscible aqueous solution and an...
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3616275 |
PROCESS FOR CONCENTRATING A METAL OF VARIABLE VALENCE IN AQUEOUS SOLUTION
Method for concentrating a metal of variable valence in aqueous solution by extracting the metal with an immiscible organic solvent, separating the resulting immiscible solutions, forming a...
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3490999 |
ELECTROLYTIC DISSOLUTION OF METALS FROM URANIUM
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3446713 |
SEPARATION OF THE CORE OF A URANIUM FUEL ELEMENT FROM ITS ENVELOPE
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3361651 |
Electrolytic reduction of uranyl solutions
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3336208 |
Electrolytic dissolution of uranium fuel elements
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3183058 |
Process for leaching uraniumbearing ores
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3081237 |
Double-baked, self-channelling electrode
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3024172 |
Electrolytic separation process and apparatus
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2903402 |
Recovery of valuable material from graphite bodies
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2796393 |
Process of recovering uranium from calutron wash solutions
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2781303 |
Process of recovering uranium from solution
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3821091 |
Title is not available
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3730851 |
Title is not available
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