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JP4824868B2 |
To provide a device for collecting metals in sea water, which is capable of easily recovering a collecting material moored in sea water, has excellent performance from the view point of cost and is free from affecting the navigation of s...
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JP4777564B2 |
A method of recovering contaminating or valuable components from a solid feed material (10), includes feeding the material (10) into an optional grinder as a pretreatment (12), then into a heated melter (14) along with a material (16) th...
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JP4762884B2 |
Phosphorus-containing dendrimers (I) comprising: (a) a core; and (b) a generation plus an external layer of the same or different phosphonoacetyl groups, are new. New phosphorus-containing dendrimers (I) comprise (a) a core and (b) at le...
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JP4726943B2 |
Disclosed is a process for recovery of uranium from a spent nuclear fuel using a carbonate solution, characterized by excellent proliferation resistance of preventing leaching of transuranium element (TRU) nuclides such as Pu, Np, Am, Cm...
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JP4654406B2 |
To sequentially separate plutonium and uranium from aqueous solutions such as Pu-U containing high level radioactive waste solutions generated in a wet retreatment stage for used nuclear fuel in a nuclear power furnace, experimental wast...
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JP2011025116A |
To provide an apparatus for adsorbing and separating iron, radium or heavy metals (excepting iron) from a solution to be treated using protein to recover the same.The metal recovery apparatus 10 is constituted so that the solution to be ...
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JP2010189340A |
To provide a new compound efficiently extracting and isolating a metal element (a minor actinoid element, in particular) present in an acidic aqueous solution into an organic phase.There is provided an N,N,N',N'-tetrakis(2-pyridylmethyl)...
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JP2010189339A |
To provide a new compound efficiently extracting and isolating a metal element (a minor actinoid element, in particular) present in an acidic aqueous solution into an organic phase.There is provided an N,N,N',N'-tetrakis(2-pyrazinylmethy...
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JP2010189341A |
To provide a new compound that can be used as an extraction agent for a metal element (a minor actinoid element, in particular) and dissolves in a hydrocarbon solvent (dodecane, in particular).There is provided an N,N,N',N'-tetrakis(2-py...
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JP4524394B2 |
To provide a method for efficiently extracting Am(III), Cm(III), and Ln(III) ions existing in an aqueous acidic solution, especially in a high level wastewater generated from recycling treatment of spent nuclear fuel. Am, Cm and rare ear...
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JP2010150089A |
To provide a practical technique for enriching235U. The method for producing235U-rich fluorouranate anions or oxofluorouranate anions is characterized in that electrolysis is performed using an electrolytic solution containing an ionic l...
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JP4478784B2 |
To provide a compound in which separation treatment of various kinds of metal ions including rare earth metals can selectively and continuously be carried out in large amount by using a small amount of the compound, and a metal ion-trans...
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JP2010101641A |
To provide a method for extracting and separating solvents of metals which can efficiently extract and separate such metals as Cr, Mo, Pd, Tc, W, Re and Pu in high-level radioactive waste liquid by a simple processes and operation.The me...
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JP4375630B2 |
The processes of the present invention include mineral acid leaching of a metal containing material, such as an ore residue, containing fluoridated metal values in the presence of a complexing agent which will complex fluoride ions. The ...
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JP4349880B2 |
Cyclic process for the separation of chemical elements E1 and E2 in an aqueous solution by co-extraction in an organic phase, addition of a second extractant, then selective de-extraction of E1 and E2 and separation of the two extractant...
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JP4315591B2 |
The invention relates to a method for separating trivalent actinides from at least trivalent lanthanides, whereby said trivalent actinides are extracted from an aqueous solution containing a H<+> concentration of 0.01 to 2 mol/1 by using...
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JP4308358B2 |
To provide an extraction method capable of separating actinide from nuclear fission lanthanide with high selectivity at a low working cost by using an extracting agent described below. A soln. of a 2,6-di-substd. pyridine deriv. in a par...
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JP4267698B2 |
A process for selectively extracting metal values, including, uranium, thorium, scandium and zirconium, from starting materials which include the metal values. The process is particularly well suited to extracting metal and recovering me...
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JP4224806B2 |
To provide a method for efficiently eluting metal without deteriorating the performance of a metal scavenger. In the method for eluting metal, a scavenger containing scavenged metal is brought into contact with a elution solution contain...
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JP4200198B2 |
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JP2008302356A |
To provide a method of biotreating a solid material to remove an undesired compound using a nonstirred surface bioreactor.The surface of a plurality of coarse substrates is coated with a solid material to be biotreated to form a pluralit...
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JP4146896B2 |
A method of biotreating a solid material to remove an undesired compound using a nonstirred surface bioreactor is provided. According to the method, the surface of a plurality of coarse substrates is coated with a solid material to be bi...
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JP2008533442A |
Embodiments of a method and a system for recovering a metal, such as uranium, from a metal-containing material are disclosed. The metal-containing material is exposed to an extractant containing a liquid or supercritical-fluid solvent an...
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JP4119966B2 |
To provide a method pf efficiently separating and recovering a collected useful metal or harmful metal from a metal collecting material used for collecting the useful metal from sea water or for collecting and removing the harmful metal ...
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JP2008155077A |
To provide a specified substance extraction apparatus which is capable of efficiently separating and extracting a rare substance even if the concentration of the rare sunstance to be targeted is extremely low in a solution, and to provid...
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JP4064862B2 |
Disclosed is a device for metallizing uranium oxide and recovering uranium, which reacts uranium oxide with a lithium metal to product uranium metal powder, and filters the resulting product using a porous filter to separate the uranium ...
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JP4049995B2 |
The invention involves the separation of actinides and lanthanides by membrane transport by means of a calixarene. To this end, a first aqueous solution containing at least one metal from the group of actinides and lanthanides to be sepa...
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JP3916663B2 |
The present invention relates to a process for removing rare earth elements (RE) from spent nuclear fuel. The spent nuclear fuel is subjected to an oxidation step at a temperature of between about 200 DEG to about 800 DEG C. and a heatin...
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JP3901736B2 |
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JP2007077508A |
To provide a method and an apparatus for efficiently eluting and recovering useful or toxic metals from a metal collecting material having useful metals collected from seawater while reducing the amount of waste as much as possible.The a...
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JP2007070706A |
To provide an apparatus for collecting metals from seawater, in which collecting materials moored under an ocean can be easily recovered, and to provide efficient methods for mooring and recovering the collecting materials.The apparatus ...
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JP2007063591A |
To provide a method for treating zirconium waste using molten salt electrolysis capable of recovering more refined zirconium having a low contamination rate from zirconium waste.The method for treating zirconium waste where a radioactive...
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JP2007503526A |
A method is disclosed for separating trivalent americium from trivalent curium, coming from an aqueous solution containing at least these cations, wherein, at an acid concentration of 0.01 mol/l-0.3 mogl/l, the aqueous solution is brough...
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JP3868635B2 |
To easily perform the decontamination of waste discharged from a nuclear fuel cycle facility and contrive the reutilization of used electrolyte without any discharge of waste liquid. Waste 10 from a nuclear fuel cycle facility is separat...
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JP3763980B2 |
To simplify the operation of promoting reduction reaction and recovering products and to improve the efficiency of electrolysis by constituting a device so as to efficiently progress the regeneration of lithium after reduction. The inner...
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JP2006509104A |
The invention provides a process for the separation of metals, the metals being comprised as the metal oxides in a mixed oxide sample, the process comprising: (i) adding the mixed oxide to a molten salt electrolyte and cathodically elect...
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JP3739694B2 |
To improve the recovery rate of U3O8 with the grain diameter of size not larger than the mesh so as not to cause defectiveness in the metal phase of pellet in manufacturing nuclear fuel pellet by adding scraps UO2 powder after oxidation ...
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JP3718691B2 |
To provide a method for producing titanium by which metallic titanium having high purity can be obtained directly from a titanium compound containing titanium oxide and processes can easily be made into a continuous process. The titanium...
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JP2005281830A |
To provide a metal recovery method by which useful metals, such as noble metals, or harmful metals contained in industrial effluents, industrial wastes, etc., can be efficiently recovered at a low cost.A hydrogen storage alloy is allowed...
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JP3695828B2 |
To oxidize Am(VI) in short time without using persulfate by adding heteropolyanion(HPA) and Ag(II) to be converted to AG(II) ion to nitric acid solution containing americium Am(III) and electrolyzing. HPA capable of complexing Am and Ag(...
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JP3658041B2 |
PURPOSE: To obtain the same effect as a conventional method by a more simplified method than a conventional method by integrating second cycle into first cycle in refining and enriching plutonium present together with uranium and fission...
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JP2005034822A |
To provide a new technique for treating or recovering heavy metal elements contained in an industrial effluent harmful to the human body effectively with a low energy and cost.In reduction and valence conversion processes of a solution c...
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JP3612554B2 |
An apparatus for recovering a specific ingredient in sea water, which comprises an adsorbing bed tank, a layer of an adsorbent charged on the bottom portion of the adsorbing bed tank, a sea water intake pipe provided in a bottom portion ...
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JP3576550B2 |
A process for recovering metal and acid values from a source material containing metallic fluorides comprises digesting the source material in sulfuric acid to form a slurry, separating a fluoride containing solid phase and a metal conta...
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JP2004113941A |
To provide a method and an apparatus for separating isotopes of gadolinium, by which an enriched product/a scrap metal of gadolinium can be recovered effectively while using an atomic laser method, and which has excellent profitability.I...
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JP2004076147A |
To provide a resin which can capture and concentrate uranium and thorium with high selectivity in a wide pH range, especially in near neutral region and keep its capturing capacity even when stored in a heating and drying state for a lon...
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JP2004036000A |
To efficiently dissolve or extract metals, such as uranium, platinum and palladium, metalloids or their oxides while reducing environmental load.The metals, metalloids or their oxides are dissolved or extracted by using a supercritical f...
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JPWO2002022895A1 |
To provide a method for preventing concentration of radioactive substances in the generated extraction residue in a production method of collecting and purifying a raw material containing tantalum, niobium, etc. through a fluorine treatm...
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JP3463931B2 |
To improve corrosion resistivity and safety of a pot in dry reprocessing method. In the dry reprocessing method precipitating nuclear fuel by melting spent nuclear fuel in molten salt in a pot, the pot (2) is induction-heated, cooling me...
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JP3452360B2 |
PCT No. PCT/GB94/00953 Sec. 371 Date Jan. 20, 1995 Sec. 102(e) Date Jan. 20, 1995 PCT Filed May 4, 1994 PCT Pub. No. WO94/26405 PCT Pub. Date Nov. 24, 1994A rotary kiln, particularly for producing uranium dioxide from uranium hexafluorid...
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