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JPS59141426A |
1. A proces for the total recovery of uranium and at least one element from the group comprising yttrium, thorium and rare earths contained in an organic phase, which is characterized by bringing said organic phase into contact with at l...
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JPS5933121B2 |
PURPOSE:To prepare a heavy metal ion adsorbent having high adsorptivity to heavy metal ions dissolved in water, and especially excellent selectivity and sdsorptivity to uranium ion, by the polycondensation of hydroxybenzimidazole with fo...
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JPS5932407B2 |
PURPOSE:To efficiently separate U from U-contg. mudstone by converting finely pulverized U-contg. mudstone dissolved in acid into hydroxide with NH3 and dissolving the hydroxide in hydrochloric acid followed by treatment with an anion ex...
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JPS5932411B2 |
Rare earth, uranium and thorium values are separated and recovered from aqueous solutions of the chlorides thereof, said aqueous solutions having an acidity of less than 2 N and a concentration in such values, expressed as the oxides the...
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JPS5932409B2 |
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JPS5932410B2 |
A continuous process is disclosed for precipitating uranium from an aqueous solution formed by the hydrolysis of uranium hexafluoride gas. Undersized ammonium diuranate particles are formed in a first container by mixing the aqueous solu...
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JPS5931577B2 |
A process for the continuous leaching of ores and an apparatus for practising this continuous leaching process are disclosed. According to this process, a plurality of unit layers composed of a pulverized uranium ore or other ore are con...
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JPS5930649B2 |
In a process for the recovery of uranium from a wet-process phosphoric acid, comprising treating in an extraction step the preliminarily oxidized acid first with an organic solvent consisting essentially of a dialkylphosphoric acid and a...
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JPS5930650B2 |
A method of recovering uranium from an aqueous calcium fluoride slurry is disclosed. The pH of the slurry is first adjusted to between 2 and 3 using an acid such as nitric acid. The supernatant fluid is then separated from the remainder ...
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JPS5930651B2 |
Method for recovering uranium from a calcium fluoride aqueous slurry which contains less than 100 parts per million of iron. The slurry is passed through a high gradient magnetic separator which results in the detention of the uranium on...
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JPS5929660B2 |
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JPS59110739A |
The invention relates to a method for selectively recovering the metal values of polymetallic sulphidic ore concentates that contain lead and/or gold and other precious metals. The concentrate is treated in the following combination of p...
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JPS5925728B2 |
Phosphorus impurities are removed from yellowcake by dissolving it in hydrochloric or sulfuric acid to a U3O8 assay of at least 150 g/l at a pH of 2; precipitating uranium peroxide with hydrogen peroxide while keeping the pH between 2.2 ...
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JPS5924730B2 |
A process for recovering uranium and/or thorium from a liquid containing uranium and/or thorium is disclosed, which comprises capturing the uranium and/or thorium in the liquid by an amorphous silica precipitate formed by adding water gl...
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JPS5924732B2 |
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 resultant organic phase is then re-extracted ...
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JPS5924733B2 |
Uranium values are recovered from a wet-process phosphoric acid solution by extracting said solution with a first organic extractant, reductively stripping the resulting first organic phase of its uranium values with a strip solution inc...
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JPS5922574B2 |
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JPS5918455B2 |
PURPOSE:To recover U, Th, etc., by making strongly alkaline the solution containing the actinoid metals, stirring after having added water glass of an appropriate quantity, bubbling air into the solution and, at the same time, collecting...
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JPS5918400B2 |
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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JPS5945932A |
A process for selectively separating plutonium from uranium and other metals is disclosed wherein, in order to precipitate and remove the pertaining complexes, use is made of a sufficient quantity of a cationic compound containing at lea...
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JPS598175B2 |
PURPOSE:To obtain a heavy metal ion adsorbent having high adsorption power to heavy metals, esp. U dissolved in water and excellent durability by impregnating a porous substance with hydrosol of titanic acid and drying the impregnated su...
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JPS5923830A |
PURPOSE: To provide a winning device for uranium from sea water which enables the uniform contact of the sea water and adsorbents by fitting an air tank to an adsorption device disposed with an adsorption zone and a settling and sepn. zo...
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JPS5857204B2 |
In a method of separating ionized substances such as heavy metal ions from a mixture dissolved in aqueous solution such as sea water, lake water, waste water and the like containing at least 0.5 mM ions by means of complex formers adapte...
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JPS58213635A |
PURPOSE: To recover uranium efficiently from plankton, by subjecting concentrated and dehydrated plankton to methane fermentation treatment, separating uranyl satls contained in the plankton as soluble ammonium complex salts of uranyl ca...
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JPS5855086B2 |
PURPOSE:To recover economically uranium without affecting the quality of product, e.g., phosphatic fertilizer, etc., by treating uranium present in phosphoric acid solution obtained from the decomposition of rock phosphate with a mineral...
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JPS58501994A |
(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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JPS58194742A |
PURPOSE: Powders of UO2 and/or U3O8 are fed into the fluidized bed of UO3, uranium nitrate is introduced into the bed and the denitration is effected by heating with microwaves, thus conducting denitration without external heaters. CONST...
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JPS5850774B2 |
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JPS58189220A |
The invention relates to polyetherurethane particles having absorptive activity whereby these particles may be applied for the extractions or the separations of metal ions from liquids, e.g. from waste liquors leaving galvanizing, printi...
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JPS58186436A |
PURPOSE: To obtain an adsorbent which adsorbs uranium selectively from sea water, has a high rate of adsorption and has excellent durability by forming the uranium adsorbent of a polymer of a porous and huge network structure having a ph...
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JPS58186434A |
PURPOSE: To improve performance for adsorption of uranium and the rate for adsorption of uranium with respect to an adsorbent which adsorbs uranium from sea water, etc. by freeze drying a system contg. a titanic acid and water and prepar...
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JPS5846454B2 |
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JPS5846537B2 |
PURPOSE:To recover trace uranium contained in sea water low cost by hydration reaction product of hydraulic cement as an adsorbent.
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JPS5846339B2 |
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JPS5843455B2 |
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JPS5839897B2 |
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JPS5839898B2 |
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JPS58141350A |
PURPOSE: To provide a titled device which can collect uranium in sea water efficiently, and is small in size and low in cost by anchoring many uranium adsorbing devices consisting of adsorbers contg. grid-like adsorbents and air tanks on...
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JPS5837253B2 |
PURPOSE:To separate Th in high yield by a method wherein fine powder of monazite is dissolved with acid by heating, aq. NH3 or NaOH is added to precipitate hydroxide, the precipitate is dissolved in HCl then treated with ion exchange res...
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JPS58125616A |
PURPOSE: To separate and enrich a desorbing solution effectively and obtain uranium of high purity, by treating the desorbed solution of the uranium prepared by using a carbonate as a desorbing agent with a strongly basic anion exchange ...
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JPS5833008B2 |
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JPS58110683A |
PURPOSE:To win uranium fuel economically from sea water by combining a salt firm downflow system for solar evaporation of edible salt and a solar heat evaporation method for winning fresh water. CONSTITUTION:Salt and uranium are won toge...
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JPS5899122A |
PURPOSE: To manufacture a concd. U soln. for a yellow cake by passing a soln. contg. desorbed U through a strongly basic anion exchange resin to allow the U to be adsorbed on the resin, eluting the adsorbed U with an NaCl soln. and an HC...
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JPS5824494B2 |
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JPS5877506A |
(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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JPS5815167B2 |
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JPS5845116A |
PURPOSE: To efficiently recover a heavy metal from an aqueous soln. contg. the metal by bringing a polysaccharide having an amidoxime group into contact with the soln. to allow the metal to be adsorbed and by allowing the metal to be des...
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JPS5845338A |
(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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JPS5835904U |
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JPS5839755A |
PURPOSE: To easily recover high-purity U components without contaminating an org. phase after extraction by extracting U components in an aqueous soln. into an org. solvent and shifting the U components into an aqueous phase using an aqu...
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