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JPH02234099A |
PURPOSE: To reduce the number of refining cycles for U and Pu of irradiated fuel within the reprocessing facility by extracting U (VI) and Pu (IV) ions in an acid solution by using a mixture of N, N-dialkylamide. CONSTITUTION: A solution...
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JPH02225634A |
PURPOSE: To deoxidize a refractory metal (high m.p. metal) by mixing the refractory metal of powdery Ti, etc., containing a little quantity of O2, a specific deoxidizer and deoxidizer carrier, heating in dried inactive gas atmosphere, de...
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JPH0239452B2 |
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JPH0230368B2 |
A process for the recovery of a heavy metal which comprises: bringing a polymer having pendant groups of the formula: -CO-NH-NH-CO-COOM in which M is hydrogen, sodium or potassium, into contact with an aqueous solution containing a heavy...
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JPH0227288B2 |
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JPH0227289B2 |
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JPH02118035A |
PURPOSE: To safely and economically adsorb and recover uranium from uranium- contg. water by using a uranium adsorbent contg. amino acid fermentation bacteria belonging to brevibacterium or corynebacterium. CONSTITUTION: This uranium ads...
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JPH0216250B2 |
PURPOSE:To carry out the titled recovery and decontamination by regular treating operations independent of the concn. of actinides by adding oxalic acid to an aqueous soln. contg. actinides to precipitate the actinides as oxalates, separ...
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JPH0214290B2 |
PURPOSE:To make PuO2 and (U.Pu)O2 of a hardly soluble component being contained dissolvable by using an aqueous soln. of U(NO3)4 as a dissolving soln. when a fuel composed of mixed U.Pu oxide is retreated by a wet process. CONSTITUTION:A...
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JPH0212885B2 |
PURPOSE:To recover uranium very efficiently from an acidic aqueous soln. by bringing the soln. into contact with an aminomethylenephosphonic acid deriv. to form a water insoluble solid complex contg. uranium. CONSTITUTION:An acidic aqueo...
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JPH0277535A |
PURPOSE: To selectively recover actinoid elements by bringing basidiomycetes into contact with a soln. contg. actinoid elements, and adsorbing actinoid elements. CONSTITUTION: Basidiomycetes are suspended in a soln. contg. actinoid eleme...
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JPH0273926A |
PURPOSE: To completely remove the U, Th, etc., in a high melting point metal and to refine the metal by heating the metal contg. U, Th, etc., as impurities at high temp. in a graphite furnace while passing an inert, gas to vaporize and r...
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JPH0210208B2 |
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JPH0254732A |
PURPOSE: To elute and recover Tc from activated carbon without causing a decrease in the adsorption capacity of the activated carbon and the nitration due to use of nitric acid by bringing a soln. contg. thiocyanate ion or iodine ion int...
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JPH01208427A |
PURPOSE: To prevent wear of wall face of a crucible and breakage of the crucible and to improve durability of the crucible by charging metal raw material for melting and high melting point metal constituting the crucible into the crucibl...
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JPH01165730A |
PURPOSE:To solidify molten metallic uranium without causing scattering or corroding a capturing material by dropping the molten metallic uranium into a melt having a lower m.p. and a lower sp. gr. than metallic uranium. CONSTITUTION:A me...
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JPH01147027A |
PURPOSE:To recover metallic uranium having the shape of a thin slice executable of a treatment using nitric acid etc., in a vapor phase by dropping molten uranium onto the surface of a cooled rotating body, soldifying it into the shape o...
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JPH0128920B2 |
Purifying a nitric acid solution containing U/Pu ions and contaminated by metal impurities by (a) oxidizing the U/Pu ions of the solution to the hexavalent form, (b) conducting the solution after oxidation through a cation exchanger colu...
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JPH0125816B2 |
The present invention relates to a method and an 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...
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JPH0125818B2 |
A process for recovering soluble uranium with an anion exchange system from carbonate-containing water. The process includes means for overcoming the deleterious effects upon the ion exchange system of carbon dioxide gas resulting from t...
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JPH01108324A |
PURPOSE: To efficiently adsorb and collect the uranium in the sea water at a low cost by packing uranium adsorbents into sheet-like fiber bag bodies having water permeability and flexibility and supporting the bag bodies in the sea water...
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JPH0162352U |
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JPH0117737B2 |
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JPS6485987A |
PURPOSE: To obtain the compd. which has excellent stability and is useful as a chelating agent and extracting agent by bringing sodium diester phosphite into reaction with tetramethyl diphosphonate, making the product acidic and acting a...
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JPS646199B2 |
This application is directed to a process for preparing dialkyl phosphoric acid, preferably di(2-ethylhexyl) phosphoric acid. This latter material is used in uranium extraction from wet-process phosphoric acid as a kerosine solution alon...
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JPS6426195A |
PURPOSE: To facilitate the treatment and disposition of high-level waste by magnetizing and separating fission product (FP) ions to a particulate state, then precipitating transuranium elements (TRU) and magnetizing and separating the pr...
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JPS6410657U |
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JPS641535B2 |
This process is characterised in that the precipitation agent used is a product belonging to the family of the hydroxamic acids soluble in a solvent miscible with the solution. It finds its application in the manufacture of uranium of nu...
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JPS6367678B2 |
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JPS6366372B2 |
1. A process for recovering the heavy metals, uranium and/or plutonium, from a starting solution which, in order to absorb UO**2+ - and PuO2 **2+ -ions, is passed over a macroporous, copolymer resin bed which is provided with a phosphoru...
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JPS63252586A |
PURPOSE: To enhance economical efficiency, by providing an uranium or lithium recovery apparatus to the seawater discharge channel from a condenser and creating an ocean farm at a seawater outflow part. CONSTITUTION: The low water temp. ...
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JPS6351964B2 |
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JPS6352040B2 |
New diphosphonic acid diesters in which the two phosphorus atoms are bound by a hydrocarbon group while each of the two acid functions of the diphosphonate is esterified by a radical having at least three carbon atoms are suitable for va...
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JPS6349734B2 |
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JPS63130126A |
PURPOSE: To obtain a crucible capable of melting uranium at 2,000°C or more and reduced in the danger of damage, with a crucible base material composed of a specific material, the heat insulating box for receiving the same and the coati...
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JPS6323252B2 |
A method of quantitatively separating uranium from specimens of natural water, especially sea water or from solutions which as to their composition are comparable to such specimens, while silica gel is provided for adsorbing the uranium....
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JPS6323253B2 |
The present invention relates to a process for recovering uranium from raffinate which is obtained by extracting phosphoric acid from a uranium-containing wet-process phosphoric acid with the aid of organic extractants and separating the...
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JPS6369155U |
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JPS6369156U |
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JPS63100936A |
(57) [Abstract] Since this gazette is application data in front of an electronic application, the data of an abstract is not recorded.
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JPS6318655B2 |
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JPS6377522A |
PURPOSE: To melt and vaporize metallic uranium with high efficiency without melting a crucible at all by impressing a high frequency magnetic field to the top part of a metallic uranium rod, melting and vaporizing the top part, and raisi...
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JPS6377523A |
PURPOSE: To melt and vaporize a metallic uranium with high efficiency without melting a crucible at all by impressing a static magnetic field to the top part of a metallic uranium rod, melting and vaporizing the top part, and then raisin...
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JPS6311041B2 |
A method and apparatus for recovering raw material, especially uranium, from natural waters, especially from the sea. Carrier bodies capable of sinking are permitted to pass, in a free fall, through a layer of water, especially a natural...
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JPS635458B2 |
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JPS6318026A |
A process is disclosed for producing silicon, titanium, zirconium or uranium by reduction of a fluoro compound with sodium followed by leaching with an aqueous alkaline earth metal chloride and recovery of the sodium metal through electr...
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JPS632895B2 |
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JPS631246B2 |
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JPS631245B2 |
Extn. of uranium (VI) from impure phosphoric acid comprises: (a) a first cycle to extract impure acid with an organic phase contg. a dialkylphosphoric acid and trialkylphosphine oxide in inert dilute diluent followed by phase sepn.; trea...
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JPS6259627B2 |
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