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WO/1992/017887A1 |
The present invention describes a process to separate magnesium from magnesium slag when the magnesium slag contains radioactive thorium and its daughters. The process concentrates the radioactive thorium and its radioactive daughters fr...
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WO/1992/004474A1 |
A process for removing molybdenum from uranium bearing solutions reduces molybdenum contamination of uranium product. The process employs solvent extraction techniques to remove molybdenum by using a molybdenum-selective extraction reage...
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WO/1991/013182A1 |
A process for the deoxidation of a refractory metal containing minor concentrations of oxygen is disclosed. In this process the refractory metal is contacted with a metallic deoxidant in a dry, inert atmosphere. The metallic deoxidant an...
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WO/1990/011826A1 |
A uranium adsorbent is prepared by reacting a polymer containing nitrile groups with hydroxylamine, wherein the amount of imidedioxime groups formed is relatively larger than that of amidoxime groups formed in terms of the integral value...
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WO/1990/000524A1 |
A process for removing transuranic elements from a waste chloride electrolytic salt containing transuranic elements in addition to rare earth and other fission product elements so the salt waste may be disposed of more easily and the val...
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WO/1989/000885A1 |
An adsorbent is prepared by mixing at least one member selected from a first group consisting of metal oxides and metal compounds capable of partly or wholly forming metal oxides when heated in an oxygen-containing atmosphere with at lea...
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WO/1989/000081A1 |
An adsorbent is prepared by mixing at least one member selected from a first group consisting of metal oxides and metal compounds capable of partly or wholly forming metal oxides when heated in an oxygen-containing atmosphere with at lea...
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WO/1988/008323A1 |
A method for a quantitative separation of scandium from thorium comprises adsorption of both metals on a cation exchange resin followed by selective elution of scandium with an acidic solution of a chelating agent followed by the elution...
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WO/1986/007097A1 |
A method of obtaining a desired metal, selected from the group consisting of titanium, aluminium, iron, manganese, hafnium, zirconium, tantalum, vanadium, uranium and tungsten, which comprises reacting a halide of the desired metal with ...
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WO/1986/006361A1 |
Preparation of metal carbides, nitrides, borides, silicides and phosphides, also metal alloys and pure metals, by providing a precursor in which there are organic ligands bonded to the metal or metals, such precursor having the element X...
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WO/1984/004912A1 |
A method for obtaining uranium chloride from sea water utilizing its greater specific gravity by combining the technique of desalination of sea water through solar heat evaporation and that of obtaining common salt by allowing solar heat...
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WO/1984/004333A1 |
High temperature pre-treatment process using a so called pre-treatment aqueous solution of crashed ore containing at least one valuable metal element of which the gangue contains clayish compounds capable of forming during the valorizing...
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WO/1983/001793A1 |
Purification method of uraniferous concentrates containing impurities of which particularly at least one of zirconium and/or hafnium elements, comprising the treatment of said concentrates in an acidic and hot aqueous medium by means of ...
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WO/1983/000509A1 |
Process for the selective purification during a hot oxidizing treatment of a uranium-bearing and/or molybdenum-bearing mineral containing arsenical materials, comprising the etching of such mineral by means of an aqueous liquor of sodium...
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WO/1982/003620A1 |
Method for removing arsenic from aqueous solutions containing alkaline carbonate, sulphate, hydroxide or hydrogenocarbonate and arseniate, as well as essentially at least one of the metals pertaining to the group comprising vanadium, ura...
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WO/1982/002873A1 |
Process for the recovery of uranium from wet-process phosphoric acid utilizing an alkyl pyrophosphoric acid extractant. The extractant also contains a modifier for retaining the alkyl pyrophosphoric acid ester in solution in an essential...
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WO/1981/001577A1 |
Process for the treatment of a hydrometallurgic suspension resulting from the etching of an ore containing at least one metal element to be valued, and acid-proof mineral materials of which a fraction is comprised of clays, consisting in...
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WO/1981/000727A1 |
The processes and devices known heretofore for removing valuable materials dissolved, particularly uranium oxide, in sea water passing through absorbing layers have not yet met any success in the implementing thereof, because of the susp...
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WO/1980/002235A1 |
Method and apparatus for gathering valuable substances, such as uranium, gold, silver or the like from sea water. The features characterizing the invention are that the sea waves are caused, by using the energy thereof, to rush up a ramp...
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WO/1979/000920A1 |
A method and apparatus is provided for removing large volumes of contaminants or for recovering valuable minerals present in trace amounts or greater quantities by ion exchange treatment of phosphoric acid liquids or the like as they flo...
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WO/1979/000142A1 |
In the field of metallurgy, specifically processes for recovering uranium from wet process phosphoric acid solution derived from the acidulation of uraniferous phosphate ores, problems of imbalance of iron exchange agents, contamination ...
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JP2024515104A |
In one aspect, the present technology relates to a method of producing Ac. The method includes the steps of preparing a phosphate-modified titania material such that an ion exchange material is produced; and such that a Th-loaded titania...
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JP2024511686A |
The present disclosure relates to a method for treating residual plutonium in the waste organic phase of a PUREX process containing an organic solvent and plutonium, the method comprising: treating the waste organic phase of the PUREX pr...
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JP2024035832A |
The present invention provides a method for stripping uranium (VI) and actinide (IV) from an organic solution. [Solution] U (VI) and An(IV) are present as U(VI) nitrate and An(IV) nitrate from an organic solution containing tri-n-butyl p...
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JP2023552669A |
This disclosure describes a method for recovering uranium that includes a continuous ion exchange (CIX) process that includes a single-cycle or dual-cycle CIX process and at least a gradient elution or resin crowding process. This disclo...
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JP2023550382A |
The present invention relates to a method for reducing metal oxides, and more specifically, in manufacturing high-grade alloy metals using metal oxides as raw materials, it is possible to eliminate the existing manufacturing process usin...
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JP2023549557A |
The present invention is a method for converting metal oxides into metal M.1To provide a system and method for reducing [Selection diagram] Figure 1
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JP7333057B2 |
To provide an efficient extraction method of americium usable in a mining field and atomic energy field.An acidic aqueous solution containing americium is brought into contact with an organic solvent in the presence of iminodiacetic acid...
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JP7323737B2 |
Provided herein are separation processes for metal ions present in aqueous solutions based on methods involving liquid-liquid extraction. The separation process involves a chelator that can selectively bind to at least one of the metals ...
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JP2023526824A |
A method and system (300) are provided for separating thorium from uranium and their decay products. The method includes combining a nuclear fuel feedstock (102) comprising thorium and uranium with a first acid (104, 204) to form a first...
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JP2023031231A |
To provide a device and a method for oxidating sandstone uranium ore through micro-nano bubble capable of improving oxidation efficiency, improving the leaching effect of uranium, accelerating the leaching of uranium, and improving an ec...
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JP7222935B2 |
The use of carbamides as extractants for fully or partially separating uranium(VI) from plutonium(IV) in an aqueous solution obtained by dissolving a spent nuclear fuel in nitric acid, by method of liquid-liquid extraction, without carry...
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JP7124043B2 |
A process for selectively separating a metallic constituent from other metals and other materials accompanying the metallic constituent in a mixture is described. The process comprises the step of providing the mixture in an aqueous solu...
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JP7103582B2 |
A process for recovering uranium from components contaminated with uranium oxide includes providing a cleaning apparatus with a cleaning solution for dissolving the uranium oxide of the components, carrying out a cleaning process by intr...
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JP7066091B2 |
To provide an adsorbent that efficiently adsorbs rare earth elements and/or actinoid, a rare earth element and/or actinoid recovery method and a scandium or actinoid separation method.The present invention provides a rare earth element a...
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JP7045331B2 |
A method for extracting metal ions from water is provided that includes disposing two electrically conductive electrodes in water, where the water includes a target ion species in solution, where at least one of the electrically conducti...
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JP7001903B2 |
Provided is a method for easily and inexpensively separating a rare earth element contained in an aqueous solution.
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JP2021134421A |
To provide a method capable of efficiently separating lanthanoid and/or actinoid under strong acidic conditions, and a compound suitable for the method.A separation method of lanthanoid and/or actinoid includes: preparing an acidic aqueo...
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JP6882654B2 |
To provide a method for efficiently separating a specific metal element from an acidic solution containing various metal elements by using an impregnated adsorbent having an extraction agent impregnated.Provided is a method for selective...
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JP6719092B2 |
To provide enrichment culture methods of manganese oxidation bacteria enabling the domination of manganese oxidation bacteria, methods of the generation of bio-manganese oxidation material, recovery methods of metals, and microbial commu...
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JP2020516768A |
It is a method of binding a target metal in a solution. The method of binding the target metal is as follows: i) the solution containing the target metal is contacted with ii) the encapsulated exudate of the algal flagellate culture or i...
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JP6688742B2 |
An industrial scale smelting system that processes large quantities of ore in a production manner for recovery of a plurality of elements in useful quantities using a furnace system and a plurality of electrowinning processes with the op...
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JP6635259B2 |
To provide an efficient extraction method for actinoid and rare earth which can be used in the atomic power field and the industrial field.The present invention provides a method for bringing an acidic aqueous solution and an organic sol...
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JP6559887B2 |
The proposed invention relates to processes of extraction and concentration of radio nuclides and can be used in radiochemical technologies when processing liquid radioactive wastes. A method for extraction of americium from liquid radio...
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JP6521286B2 |
To provide an efficient method of extracting actinoids and lanthanoids available in the fields of nuclear power and mineral industry.A method comprises bringing an acidic aqueous solution containing actinoids and/or lanthanoids into cont...
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JP6513909B2 |
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JP6511358B2 |
To provide a radioactive waste solidification method capable of shortening a storage period of a vitrified substance.In S1A, an acid aqueous solution is injected into contaminated water containing a long-half-life radionuclide (U-238) an...
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JP2018165376A |
To collect a large amount of metal such as lanthanoid and actinoid, Fe, Al and noble metal such as gold if they are converted into plants.A method for extracting an element from sea includes mainly extracting a metal element existing in ...
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JP2018517840A |
A method of selectively separating the metal components in the mixture from the accompanying other metals and other materials is described. The method comprises the step of subjecting the mixture to aqueous solution such that the metal c...
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JP6316168B2 |
To provide a decomposition method for a solidified glass body capable of easily decomposing the solidified glass body.The decomposition method for a solidified glass body 10 includes a molten salt addition step 12 of adding a molten salt...
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