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JPS5672070A |
PURPOSE: An uranyl ion trapping agent comprising a specified macrocyclic hexacarboxylic acid. CONSTITUTION: A macrocyclic hexacarboxylic acid of formula I [wherein X1, X3 and X5 are -COOH, formula II (where R1 is H, an alkyl or aromatic ...
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JPS5623585B2 |
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JPS5621820B2 |
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JPS5618064B2 |
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JPS5641834A |
PURPOSE: To efficiently collect U by using a magnetic adsorbent and combining a slury adsorbing method and a magnetic separation method to perform solid-liq. separation and adsorption with one magnetic separator. CONSTITUTION: Seawater d...
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JPS5640404A |
PURPOSE: To permit the effective desorption of uranium with the consumption of lesser amounts of a desorption liquid by a method in which an inert gas is supplied into the lower part of magnetic small wire portion of a magnetic separator...
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JPS5626707A |
Preparing phosphates and a uranium containing concentrate by treating wet-process phosphoric acid with an inorganic fluorine compound, an organic dispersant and a reducing agent, separating off the resulting uranium containing precipitat...
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JPS569341A |
PURPOSE: To enhance the detaching efficiency of uranium by a method wherein, in case of carrying out the uranium detachment by using a high gradient magnetic separator, the temp. of a detaching liquid is raised by utilizing heat energy g...
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JPS564492B2 |
Recovery of U from wet-process H3PO4 solns. is affected by (a) washing the soln. with a hydrocarbon having a b. pt. of 150-300 degrees C (pref. kerosene) to remove sludge-forming components; (b) separating the resulting sludge phase from...
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JPS563416B2 |
A process for the recovery of uranium from a wet-process type phosphoric acid solution is effected by adjusting said solution with sufficient ferrous ion to insure that the uranium is in the uranous form, contacting the adjusted solution...
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JPS55159844A |
The invention relates to functionalised inorganic oxide products and their use in the removal of heavy metals. transition metals and activide metals from solution. The product is obtained by reacting an inorganic solid containing surface...
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JPS5549522B2 |
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JPS55149605A |
A liquid-liquid solvent extraction system comprises a mixing stage which includes a mixing device (10) for creating a dispersion of the two liquid phases followed by a residence chamber (14) designed to enhance contacting and mass transf...
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JPS55136128A |
PURPOSE: To prevent disturbance of uranium adsorption due to org. matter and facilitate treatment of a secondary conc. soln. by allowing uranium in sea water to be adsorbed on an adsorbent and contacting a soln. of org. matter-contg. ura...
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JPS55136129A |
PURPOSE: To efficiently recover carbonate and uranium from a dil.soln. of carbonate-contg. uranium collected from sea water by contacting the soln. to an acidic cation exchange resin to remove carbonate radicals and contacting it to an a...
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JPS55132635A |
PURPOSE: To obtain the adsorbent for uranium and strontium, which is easily prepared and displays stable adsorption power, cheaply by a method wherein Al2O3, activated carbon and MgO powder are heated, agitated and filtered with distille...
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JPS55125244A |
PURPOSE: To considerably enhance the U collecting efficiency by dividing the matrix portion of a magnetic separator into three chambers and moving the chambers to successively carry out U capturing, desorbing and washing operations when ...
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JPS55113848A |
PURPOSE: To efficiently adsorption-recover rare substances such as U in sea water by setting wing-form bodies, in an ocean current, packed with an adsorbent for U, etc. and having many small openings at the upper and lower sides and by p...
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JPS55113629A |
The parent patent describes a method of recovering uranium from phospahte cpds. by solvent extn. with an organic phase contg. a dialkyl pyrophosphoric acid (I) and >=1 mole (per mole of (I)) of a solubilising agent for the double uranium...
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JPS5530896B2 |
An apparatus for isotope separation has a plurality of separating stages connected in a separation cascade. Each of the stages has a separating-nozzle unit and a heat exchanger connected upstream of the unit for abstracting heat from the...
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JPS5529134B2 |
Uranium values are obtained from phosphate rock by acidifying phosphate rock containing uranium values and at least one other heavy metal with a mineral acid so as to obtain a crude acid, solvent extracting the crude acid with an organic...
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JPS5597439A |
PURPOSE: To recover U within sea water by adsorption continuously and effectively by a method wherein a U adsorbing unit is suspended to a horizontal loop-like cable recirculated and moved by ocean current through an appropriate means an...
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JPS5592108A |
Water is passed from a relative flow thereof in a horizontal direction, into a substantially vertical passage and through a bed of absorption material in a fluidized state, in order to extract a substance from the water. The static press...
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JPS5580723A |
Process for the recovery of the uranium present in a phosphoric acid solution by bringing the said solution into contact with an organic solvent suitable for extracting the uranium, wherein the said organic solvent comprises a system of ...
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JPS5576031A |
PURPOSE: To efficiently recover uranium from a uranium-contg. aq. soln. by allowing the dissolved uranium to be adsorbed on a chelate ion exchange resin with metal ion adsorbed and desorbing the adsorbed uranium with an aq. soln. of chlo...
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JPS5554536A |
Process for the separation of americium from curium contained in an aqueous nitric solution, wherein the initial solution undergoes oxidation at ambient temperature in the presence of phosphoric acid or phosphate ions at a concentration ...
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JPS5514805B2 |
A process of recovering uranium values as uranium peroxide from an aqueous uranyl solution containing dissolved vanadium and sodium impurities by treating the uranyl solution with hydrogen peroxide in an amount sufficient to have an exce...
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JPS5539263A |
PURPOSE: To improve adsorbing ability of sea water uranium through molding and drying by adding soluble high polymer material to titanic acid, dissolving the same in water, adding sulfuric acid then neutralizing the same. CONSTITUTION: S...
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JPS5528373A |
PURPOSE: To sample U especially from the sea water, by contacting the U dissolved solution with chelate ion exchange resin having metal ions absorbed to absorb dissolved U, and then contacting with NH4Cl, (NH4)2CO3, or the like. CONSTITU...
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JPS5520297A |
A process for rendering actinide values recoverable from sodium carbonate scrub waste solutions containing these and other values along with organic compounds resulting from the radiolytic and hydrolytic degradation of neutral organophos...
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JPS5518533A |
PURPOSE: To keep the concentration of hydrogen and thorium in sodium low, by providing the magnetic separator having metal grain absorbing hydrogen isotope within, on the flowing passage of fluidized metal. CONSTITUTION: The zirconium me...
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JPS553425B2 |
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JPS551815B2 |
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JPS551817B2 |
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JPS551816B2 |
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JPS54162698A |
A method of purifying phosphoric acid after solvent extraction to remove residual amounts of an immiscible organic carrier including contacting the phosphoric acid with a sorbent which sorbs or takes up the residual amount of organic car...
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JPS54155916A |
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JPS5440238B2 |
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JPS54150311A |
PURPOSE: To enhance the U extracting synergistic effect, in extraction separation of U in an acidic aq. soln. with an extracting soln. contg. an acidic org. phosphorus cpd. as an extracting reagent, by adding a specified amt. of a polyet...
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JPS54148186A |
A composite anion adsorbent which includes a dehydration cured composite gel of an organic hydrophilic polymer and a metal hydroxide. In the preferred embodiment, the metal hydroxide is a hydroxide such as iron hydroxide, aluminum hydrox...
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JPS5435962B2 |
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JPS54137414A |
PURPOSE: To recover uranium present in the sea water with good efficiency by bringing an uranium adsorbent powder with a magnetism into contact with the sea water by utilizing dital difference. CONSTITUTION: The adsorbent for uranium(U) ...
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JPS54137416A |
PURPOSE: To perform the recovery of uranium present in the sea water by utilizing the force of tide current by the procedure in which a floating tank provided with a desorption liquid tank, a regenerating liquid tank, a water-washing tan...
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JPS54137415A |
PURPOSE: To recover uranium in the sea water with good efficiency by bringing an uranium adsorbent into ontact with the sea water for cooling condensers in atomic power generation or steam power generation. CONSTITUTION: The sea water fr...
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JPS54137492A |
PURPOSE: A magnetic uranium adsorber is, before seawater contact, trapped by a high-gradient magnetic separator, and then dispersed into seawater, thereby to enhance the recorvery ratio of the magnetic adsorber to about 100%. CONSTITUTIO...
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JPS54137417A |
PURPOSE: To recover uranium present in the sea water with good efficiency by the procedure in which the sea water is continuously introduced into a container, then a coprecipitator and a ferrous salt are added to the sea water from one e...
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JPS54135686A |
PURPOSE: To efficiently recover an adsorbent which has adsorbed U in seawater, by removing part of the adsorbent in seawater which part is of a relatively large diameter by sedimentation separation; adding a ferrous salt soln. to the sea...
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JPS54133487A |
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JPS5432834B2 |
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JPS54131518A |
PURPOSE: Magnetic adsorber granules of a specific grain is used to adsorb and recover uranium for seawater so that the adsrob treatment is efficiently performed and the recover ratio of the absorber is enhanced. CONSTITUTION: Seawater is...
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