Patents
Sitemap › C22 - Metallurgy; Ferrous or non-ferrous alloys; Treatment of alloys or non-ferrous metals › C22B - Production or refining of metals; Pretreatment of raw materials › C22B 60 - Obtaining metals of atomic number 87 or higher, i.e. radioactive metals
Patents for C22B 60 - Obtaining metals of atomic number 87 or higher, i.e. radioactive metals (1,601)
07/1982
07/06/1982CA1126961A1 Pyroelectrochemical process for reprocessing irradiated nuclear fuels
06/1982
06/16/1982EP0054014A1 Method of removing phosphorus impurities from yellowcake
06/16/1982EP0053694A1 Process for reducing iron from a phosphoric-acid solution
06/09/1982EP0053409A1 Process for the recovery of a uranium-containing concentrate and phosphoric acid
06/08/1982CA1125032A1 Methods of processing uraniferous ores
06/02/1982EP0053054A1 Process for recovering uranium (VI) from phosphoric-acid solutions
06/01/1982US4332776 Extractant solvent restoration in the process for recovery of uranium from phosphoric acid
06/01/1982CA1124506A1 Process for purifying rare-earth compositions using fractional sulfate precipitation
05/1982
05/26/1982EP0052206A1 Process for preparing polyfunctional ion exchangers
05/25/1982CA1124084A1 Process for the selective separation of uranium from its accompanying metals and for its extraction
05/18/1982CA1123609A1 Pollution-free treatment of uranium containing effluents produced by alcaline attack of a sulfur containing uranium ore
04/1982
04/27/1982US4327061 Recovering uanadium values or uranium values
04/27/1982CA1122418A1 Method and apparatus for leaching and precipitating metal from a metal-containing solid
04/27/1982CA1122417A1 Method of separating iron from uranium
04/20/1982US4325918 Uranium recovery from phosphoric acid
04/13/1982US4324767 Reversible redox systems, semipermeable capsules
04/13/1982US4324764 Apparatus for continuous leaching of ores
04/13/1982CA1121603A1 High temperature ore reduction with a liquor containing essentially a soluble bicarbonate
04/06/1982US4323540 Reduction of iron precipitation in uranium extraction process
03/1982
03/23/1982US4321235 Process for the treatment of alkaline liquors containing sulfate ions
03/23/1982US4320923 Leaching with ammonium carbonate
03/16/1982US4320093 Separation of uranium by biosorption
03/09/1982US4318893 Oxidation of americium to a valence of 6 using a persulfate and silver cations in the presence of phosphoric acid
03/09/1982CA1119414A1 Non polluting processing of uraniferrous alkaline effluents containing so.sub.4 ions
02/1982
02/23/1982US4316877 Extraction of uranium values from phosphoric acid
02/23/1982US4316800 Recovery of uranium from enriched solution by a membrane separation process
02/09/1982US4314974 Solvent extraction method using static mixers
02/09/1982CA1117771A1 Process and apparatus for continuous leaching of ores
02/09/1982CA1117768A1 Process for recovering uranium from wet process phosphoric acid
01/1982
01/26/1982US4312840 Process for the in-situ leaching of uranium
01/26/1982US4312839 Process for controlling calcium in a leach operation
01/26/1982US4312838 From carbonate lixiviant
01/26/1982CA1117003A1 Process for in-situ leaching of uranium
01/26/1982CA1116868A1 Hydrometallurgical process for extracting uranium
01/19/1982US4311677 Recovering uranium from phosphate rock
01/19/1982US4311676 Solvent extraction, ammoniation
01/19/1982US4311675 Maintaining reductive strip efficiency in uranium recovery processes
01/19/1982CA1116411A1 Process for the separation of uranium contained in an alkaline liquor, particularly a leach solution of an uraniferous ore
01/19/1982CA1116410A1 Apparatus and process for recovering nuclear fuel from scrap material
01/12/1982CA1116158A1 Impregnated polymers
01/12/1982CA1115964A1 Recovery of uranium values
01/05/1982US4309290 Magnetically supported particle matrix for accumulating or affecting substances dissolved or finally dispersed in liquids or gas
01/05/1982CA1115485A1 Process for removing humic matter from phosphoric acid solutions
01/05/1982CA1115484A1 Pretreatment method for the recovery of uranium from wet-process phosphoric acid
12/1981
12/22/1981CA1114967A1 High capacity folded moving bed ion exchange apparatus and method for treating phosphoric acid
12/22/1981CA1114619A1 Acid leaching of uranium ore
12/15/1981US4305912 Hydrometallurgy
12/15/1981US4305911 Non-polluting treatment of uraniferous effluents originating from an alkaline attack of a sulphur-containing uranium ore
12/08/1981US4304757 Method of controlling the molybdenum content of uranium yellowcake
12/08/1981CA1113725A1 Process for extracting uranium from its ores by using alkaline earth carbonates and bicarbonates solutions in the presence of carbon dioxide
12/08/1981CA1113681A1 Method of purifying phosphoric acid after solvent extraction
12/01/1981US4303620 Extraction process
11/1981
11/24/1981US4302429 Alkaline carbonate leaching using hydrogen peroxide as oxidant, alkylidene-1,1-diphosphonic acid stabilizer
11/24/1981US4302428 Yellowcake processing in uranium recovery
11/24/1981US4302427 Solvent extraction; stripping with a dilute ammonium carbonate solution; acidification; peroxidation
11/24/1981CA1112842A1 Post treatment method for the recovery of uranium from wet-process phosphoric acid
11/17/1981US4301123 Methods of processing uraniferous ores
11/17/1981US4301122 Reacting the phosphoric acid with ammonia, removing aluminum with sodium carbonate and sodium bicarbonate before extracting uranium
11/17/1981CA1112459A1 Composition and method for solution mining of uranium ores
11/03/1981US4298578 From oxidative degradation by catalytic decomposition of hydrogen peroxide
11/03/1981US4298577 Adsorption on lignite which is then burned as fuel
11/03/1981US4298495 Countercurrent hydrogen gas flow through material in carbon crucible which reacts with water product
10/1981
10/28/1981EP0038764A1 Uses of diphosphonic derivatives in cation exchange, diphosphonic derivatives and their manufacturing processes
10/27/1981US4297218 Process and apparatus for extracting a substance from a body of water
10/20/1981US4296075 Catalytic conversion of polythionates to thiosulfates, sulfites
10/20/1981US4296073 High temperature attack of ores by means of a liquor essentially containing a soluble bicarbonate
10/20/1981CA1111156A1 Process for the treatment of alkaline liquors containing sulfate ions
10/20/1981CA1110828A1 Process for the purification of solutions containing carbonates, sulphates, possibly potassium or sodium hydroxide, and at least one of the metals vanadium, uranium, molybdenum
10/14/1981EP0037655A2 A phenolic chelate resin, a process for producing the same, and a method of recovering a heavy metal ion with the same
10/07/1981EP0037321A1 Process for making adsorbent materials for analyzing or treating liquids and materials so obtained
10/06/1981US4293530 Removal of iron as sulfate
10/06/1981US4293529 Process for recovering uranium from wet-process phosphoric acid using alkyl pyrophosphoric acid extractants
10/06/1981US4293528 Yellowcake processing in uranium recovery
10/06/1981US4293527 Metals extraction from sea water
09/1981
09/29/1981US4292280 Hydrometallurgy
09/29/1981US4292278 Purification of wet process phosphoric acid as a pretreatment step in the recovery of uranium
09/22/1981CA1109275A1 Uranium recovery from wet process phosphoric acid
09/16/1981EP0035507A1 Process and device for removing valuable materials dissolved in sea water
09/08/1981US4288412 Post treatment method for the recovery of uranium from wet-process phosphoric acid
09/08/1981US4288392 Process for the preparation of dialkyl phosphoric acids
09/08/1981CA1108525A1 In-situ leaching of uranium
09/01/1981CA1108090A1 Recovery of variable valency metals from compounds in voltaic cell
08/1981
08/25/1981CA1107662A1 Apparatus for the separation of isotopes by the separating-nozzle process
08/19/1981EP0033999A1 Process for the preparation of dialkyl phosphoric acid
08/19/1981EP0033998A1 Process for recovering uranium from wet-process phosphoric acid
08/19/1981EP0033838A1 Process for recovering uranium from wet-process phosphoric acid
08/18/1981US4284726 Composite anion adsorbent and method for making same
08/18/1981US4284606 Extraction
08/18/1981CA1107032A1 Method of purifying uranium tetrafluoride hydrate and preparing uranium (v1) peroxyde hydrate using a fluoride precipitating agent
08/12/1981EP0033444A1 Process for recovering uranium and/or plutonium from solutions with a high salt load
08/11/1981US4283370 And eluting with a mineral acid
08/11/1981CA1106616A1 Process for the recovery of uranium from wet-process phosphoric acid
08/11/1981CA1106615A1 Process for recovering actinide values
08/05/1981EP0033091A1 Process for purifying a nitric-acid U/Pu solution
08/04/1981US4282188 Contacting with diester of pyrophosporic acid, extraction with alkaline solution, and precipitation
08/04/1981CA1106188A1 Extraction process
08/04/1981CA1106186A1 Process for selective separation of uranium from solutions by means of an ion exchanger
07/1981
07/28/1981US4280985 Ammonium carbonate
07/28/1981US4280904 High capacity folded moving bed ion exchange apparatus and method for treating phosphoric acid
07/22/1981EP0032184A1 Process for recovering uranium or uranium compounds from phosphoric acid
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