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Class Information
Number: 423/20
Name: Chemistry of inorganic compounds > Treating mixture to obtain metal containing compound > Radioactive metal (at. no. 84+ or radioactive isotope of another metal) > Actinide series metal (at. no. 89+) > Acid leaching
Description: Processes which include making a separation by using an acid as an active ingredient to leach, wash, or dissolve; see Glossary.

Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8557120 Grouped separation of actinides from a strongly acidic aqueous phase Oct. 15, 2013
8529769 Use of certain chemical elements for inhibiting the formation of precipitates containing zirconium molybdate in an aqueous solution containing the element molybdenum and the element zirconium Sep. 10, 2013
8475746 Uranium ion exchange adsorption method using ultrasound Jul. 2, 2013
8470269 Highly efficient uranium leaching method using ultrasound Jun. 25, 2013
8277772 Method of extracting Te and bismuth oxide and recovering byproducts Oct. 2, 2012
7993612 Recovery of rare earth elements Aug. 9, 2011
7887767 Process for reprocessing a spent nuclear fuel and of preparing a mixed uranium-plutonium oxide Feb. 15, 2011
7799293 Actinide extraction methods Sep. 21, 2010
7794677 Reduction of copper content in the molybdenite concentrate Sep. 14, 2010
7780921 Ultrasonic counter-current screw extractor for uranium recovery Aug. 24, 2010
7754167 Method for separating trivalent americium from trivalent curium Jul. 13, 2010
7718147 Chemical beneficiation of raw material containing tantalum-niobium May. 18, 2010
7597862 Process for radioisotope recovery and system for implementing same Oct. 6, 2009
7572418 Process to obtain titanium concentrates with high contents of TiO.sub.2 and low contents of radionuclide elements from anatase mechanical concentrates Aug. 11, 2009
7527772 Ultrasonic counter-current screw extractor for uranium recovery and process therefore May. 5, 2009
7341700 Method for recovery of metals from metal-containing materials using medium temperature pressure leaching Mar. 11, 2008
7255798 Recycling of used perfluorosulfonic acid membranes Aug. 14, 2007
7195745 Method of preparing a product based on phosphate of thorium and/or actinide(s) Mar. 27, 2007
7118718 Gypsum decontamination process Oct. 10, 2006
6852233 Metal-collecting apparatus and method for elution and recovery of metal from metal-collecting material Feb. 8, 2005
6740298 Apparatus for dissolving nuclear fuel May. 25, 2004
6652661 Radioactive decontamination and translocation method Nov. 25, 2003
6641641 Method for producing metal or metal compound comprising process of treating with fluorine and adjusted raw material used therein Nov. 4, 2003
6623712 Method for dissolving plutonium or a plutonium alloy and converting it into nuclear fuel Sep. 23, 2003
6605158 Radioactive decontamination and translocation method Aug. 12, 2003
6497769 Radioactive decontamination and translocation method Dec. 24, 2002
6238566 Multi-stage solvent extraction of metal value May. 29, 2001
6235252 Method for recovering nitrate ions as nitric acid from nuclear industry effluents May. 22, 2001
6231683 Method for cleaning radioactively contaminated material May. 15, 2001
6169221 Decontamination of metal Jan. 2, 2001
6159435 Leaching of mineral ores Dec. 12, 2000
5966584 Method of separating trivalent actinides from trivalent lanthanides Oct. 12, 1999
5945342 Method for digesting spent ion exchange resins and recovering actinides therefrom using microwave radiation Aug. 31, 1999
5910621 Treatment of titaniferous materials Jun. 8, 1999
5881359 Metal and fluorine values recovery from fluoride salt matrices Mar. 9, 1999
5851500 Removal of uranium contamination from magnesium fluoride slag Dec. 22, 1998
5826162 leaching of titaniferous materials Oct. 20, 1998
5745835 Process and apparatus for dissolving a mixture of oxides of uranium and of plutonium Apr. 28, 1998
5686052 Process for the treatment of nuclear targets and/or fuels based on metallic aluminium by tetramethylammonium hydroxide solutions Nov. 11, 1997
5678167 Method for dissolving nuclear fuels Oct. 14, 1997
5640701 Method for remediating soil containing radioactive contaminants Jun. 17, 1997
5640703 Treatment of solid wastes Jun. 17, 1997
5587142 Method of dissolving metal oxides with di- or polyphosphonic acid and a redundant Dec. 24, 1996
5578109 Treatment of titaniferous materials Nov. 26, 1996
5573738 Method for removing depleted uranium from contaminated soils Nov. 12, 1996
5523514 Process for dissolving plutonium and/or other radioactive elements present in solid or liquid products Jun. 4, 1996
5516496 Metal and fluorine values recovery from fluoride salt matrices May. 14, 1996
5494648 Process for removing thorium and recovering vanadium from titanium chlorinator waste Feb. 27, 1996
5489736 Treatment of solid organic wastes Feb. 6, 1996
5482688 Plutonium dissolution process Jan. 9, 1996

1 2 3 4

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