Quotables
"It is my heart-warmed and world-embracing Christmas hope and aspiration that all of us, the high, the low, the rich, the poor, the admired, the despised, the loved, the hated, the civilized, the savage (every man and brother of us all throughout the whole earth), may eventually be gathered together in a heaven of everlasting rest and peace and bliss, except the inventor of the telephone. "
Mark Twain ; Christmas greetings, 1890
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| Number | Title | Issue Date |
| 7718147 | Chemical beneficiation of raw material containing tantalum-niobium The invention relates to a process for the chemical beneficiation of raw material containing tantalum-niobium such as wastes, scoria, concentrates and ores. ... | 05/18/2010 |
| 7527772 | Ultrasonic counter-current screw extractor for uranium recovery and process therefore An apparatus and method to remove uranium from a body of material wherein the method includes the steps of depositing the body of solid material in an ultrasonic extractor and depositing an amount of acid in the ultrasonic extractor. The method also provides for the... | 05/05/2009 |
| 7354890 | Cleaning composition and method Cleaning compositions composed of specific amounts of carbonic acid and/or carbonate, hydrogen peroxide, aluminum fluoride and water are highly effective for cleaning electronic devices of resist, resist residues, titanium dioxide, aluminum oxide and silicon dioxide... | 04/08/2008 |
| 7341700 | Method for recovery of metals from metal-containing materials using medium temperature pressure leaching The present invention relates generally to a process for recovering copper and other metal values from metal-containing materials using controlled, super-fine grinding and medium temperature pressure leaching. Processes embodying aspects of the present invention may... | 03/11/2008 |
| 7285256 | Precious metal recovery using thiocyanate lixiviant Precious metal-containing mineral material is subjected to an acidic thiocyanate leach to dissolve the precious metal as a precious metal-thiocyanate complex. A feed of the thiocyanate leach solution may include a large molar ratio of ferric iron to thiocyanate. Pre... | 10/23/2007 |
| 7255798 | Recycling of used perfluorosulfonic acid membranes A method for recovering and recycling catalyst coated fuel cell membranes includes dissolving the used membranes in water and solvent, heating the dissolved membranes under pressure and separating the components. Active membranes are produced from the recycled mater... | 08/14/2007 |
| 7195745 | Method of preparing a product based on phosphate of thorium and/or actinide(s) The invention relates to a process for the preparation of a product based on a phosphate of at least one element M(IV), for example of thorium and/or of actinide(IV)(s). This process comprises the following stages: a) mixing... | 03/27/2007 |
| 7156894 | Method for recovering metal values from concentrates of sulfide minerals A method of recovering precious metal values from refractory sulfide ores is provided. The method includes the steps of separating clays and fines from a crushed refractory sulfide ore, forming a heap from the refractory sulfide ore, producing a concentrate of refra... | 01/02/2007 |
| 7118718 | Gypsum decontamination process A process for reducing a level of radionuclei in a phosphogypsum material having a radioactive contaminant is provided, wherein the process includes the steps of: (a) mixing the phosphogypsum material with an acid decontamination solution to form a mixture; (b) sepa... | 10/10/2006 |
| 7101822 | Method for decontaminating solid iodine filters The invention relates to a process for decontaminating solid iodine filters containing silver iodide, silver iodate and/or physisorbed molecular iodine. This process consists in placing the filter in contact with an aqueous solution of a reducing agent chosen... | 09/05/2006 |
| 7087120 | System and method for chemical decontamination of radioactive material A method for chemically decontaminating radioactive material. The method includes reducing-dissolving step for setting surface of radioactive material in contact with reducing decontamination liquid including mono-carboxylic acid and di-carboxylic acid as dissolvent... | 08/08/2006 |
| 6852233 | Metal-collecting apparatus and method for elution and recovery of metal from metal-collecting material An object of the present invention is to provide a structure of a metal collecting material for use in seawater or river water or industrial wastewater to give the most excellent adsorption efficiency. Another object of the present invention is to provide a process ... | 02/08/2005 |
| 6740298 | Apparatus for dissolving nuclear fuel A nuclear fuel dissolution apparatus which comprises a perforated sloping ramp contained within a process chamber for containing solvent for the fuel, a pulsation member which in use creates pulses in solvent in the process chamber, the perforations being designed t... | 05/25/2004 |
| 6652661 | Radioactive decontamination and translocation method A method for removing a wide variety of radioactive contaminants from a contaminated surface sufficient for the surface to be classified as a low-level waste or as free release. Contaminated surfaces may be classified as Class C, Class B, Class A, or high... | 11/25/2003 |
| 6641641 | Method for producing metal or metal compound comprising process of treating with fluorine and adjusted raw material used therein An object of the present invention is to provide a method for preventing concentration of a radioactive substance in a generated extraction residue in a method of producing tantalum, niobium, or a similar substance including collecting and refining a raw ... | 11/04/2003 |
| 6623712 | Method for dissolving plutonium or a plutonium alloy and converting it into nuclear fuel The present invention relates to a process to dissolve plutonium or a plutonium alloy, by placing it in contact with an aqueous dissolution mixture, wherein said dissolution mixture comprises nitric acid, a carboxylic acid with complexing properties with ... | 09/23/2003 |
| 6605158 | Radioactive decontamination and translocation method A method for removing radioactive contaminants from a given surface. An aqueous solution having a wetting agent and a complex substituted keto-amine is provided. The solution is left on the surface for a time sufficient to remove the radioactive contamina... | 08/12/2003 |
| 6497769 | Radioactive decontamination and translocation method A method for removing radioactive contaminants from a given surface. An acidic solution having a pH of less than 3.0, and preferably less than 1.5, of a complex substituted keto-amine, and a mixture of a saturated and unsaturated lower alcohol (e.g. isopr... | 12/24/2002 |
| 6238566 | Multi-stage solvent extraction of metal value Proposed is an improvement in a multi-stage solvent extraction process of a metal value such as rare earth elements from an acidic feed solution containing the metal value in the form of a water-soluble salt by bringing the aqueous solution into contact w... | 05/29/2001 |
| 6235252 | Method for recovering nitrate ions as nitric acid from nuclear industry effluents A method for recovering nitrate ions as nitric acid from nuclear industry effluents by thermally decomposing the nitrate ions in solution, and recovering the NOx vapors generated by the heat treatment in an aqueous medium. The resulting nitric ... | 05/22/2001 |
| 6231683 | Method for cleaning radioactively contaminated material Radioactively contaminated material is cleaned by contacting the material with a decontaminating liquid comprising an aqueous solution of nitric acid containing an NOx generating agent. The NOx generating agent may be a nitrite, for example, sodium nitrit... | 05/15/2001 |
| 6169221 | Decontamination of metal A process for the decontamination of radioactively contaminated metal which comprises contacting the metal with a decontamination reagent solution containing an organic acid and an oxidising agent, allowing said solution to react with the contaminated met... | 01/02/2001 |
| 6159435 | Leaching of mineral ores A process for oxidation of ferrous ions in solution, and more particularly a process for improved base metal and/or uranium leaching from ores, concentrates or tailings using ferric ion as an oxidizing agent. A reaction vessel (10) holds a ferrous ion-con... | 12/12/2000 |
| 5966584 | Method of separating trivalent actinides from trivalent lanthanides Trivalent actinides can be separated from trivalent lanthanides in aqueous solutions at H+ concentrations of 2 mol/l to 0.001 mol/liter by extraction with bis(aryl)dithiophosphinic acid and a synergist such as TBP, TOPO and TBPO in an organic ... | 10/12/1999 |
| 5945342 | Method for digesting spent ion exchange resins and recovering actinides therefrom using microwave radiation The present invention relates to methods for digesting diphosphonic acid substituted cation exchange resins that have become loaded with actinides, rare earth metals, or heavy metals, in a way that allows for downstream chromatographic analysis of the ads... | 08/31/1999 |
| 5910621 | Treatment of titaniferous materials A process for facilitating the removal of impurities e.g. radionuclides, such as uranium and thorium, and/or one or more of their radionuclide daughters, from titaniferous material includes contacting the titaniferous material with one or more reagents at... | 06/08/1999 |
| 5881359 | Metal and fluorine values recovery from fluoride salt matrices The process for converting feed materials of high mineral content containing primary metal values and fluorine values to the primary metal or useful compounds thereof and to fluorine values or useful compounds thereof, wherein the feed materials constitut... | 03/09/1999 |
| 5851500 | Removal of uranium contamination from magnesium fluoride slag Magnesium fluoride slag contaminated with metallic uranium or uranium compounds is treated by digestion with potassium hydroxide to soluble potassium fluoride and insoluble magnesium hydroxide. The solid and liquid phases are then separated and the solids... | 12/22/1998 |
| 5826162 | leaching of titaniferous materials A process for facilitating removal of one or more impurities from titaniferous material containing the impurities in a form which is highly soluble in acid. The material is in turn leached with a sulphuric acid solution and with a hydrochloric acid soluti... | 10/20/1998 |
| 5745835 | Process and apparatus for dissolving a mixture of oxides of uranium and of plutonium A process and apparatus for dissolving a mixed oxide or mixture of oxides of uranium and plutonium. The powder is added with nitric acid to a chamber to dissolve uranium oxide, and the solution is circulated through a circuit of the apparatus with a porti... | 04/28/1998 |
| 5686052 | Process for the treatment of nuclear targets and/or fuels based on metallic aluminium by tetramethylammonium hydroxide solutions The invention relates to a process for the processing of nuclear targets and/or fuels based on metallic aluminium by dissolving with the aid of aqueous tetramethylammonium hydroxide (TMAOH) solutions. Dissolving can consist of a total dissolving in a single st... | 11/11/1997 |
| 5678167 | Method for dissolving nuclear fuels The powdered form of nuclear fuels such as uranium dioxide and plutonium dioxide are dispersed in an about 3N aqueous nitric acid solution, and irradiated by UV rays at a wavelength of approximately 300 nm in order to improve a dissolving rate of the nucl... | 10/14/1997 |
| 5640701 | Method for remediating soil containing radioactive contaminants Soil comprising small soil particles, clay and silt particles, humus, fine vegetation, and contaminated with soluble or insoluble radioactive species is treated by first introducing an aqueous extracting solution comprising a mixture of sodium and potassi... | 06/17/1997 |
| 5640703 | Treatment of solid wastes A process for the treatment of solid waste material which is or is suspected to be contaminated with plutonium or compounds thereof with or without other hazardous contaminants, which process includes: contacting the said material with and thereby dissolv... | 06/17/1997 |
| 5587142 | Method of dissolving metal oxides with di- or polyphosphonic acid and a redundant A method of dissolving metal oxides using a mixture of a di- or polyphosphonic acid and a reductant wherein each is present in a sufficient amount to provide a synergistic effect with respect to the dissolution of metal oxides and optionally containing co... | 12/24/1996 |
| 5578109 | Treatment of titaniferous materials A process for facilitating the removal of impurities e.g. radionuclides, such as uranium and thorium, and/or one or more of their radionuclide daughters, from titaniferous material includes contacting the titaniferous material with one or more reagents at... | 11/26/1996 |
| 5573738 | Method for removing depleted uranium from contaminated soils Soil, contaminated with radioactive material such as uranium, is treated to remove the radioactive contaminant. The soil is first pre-processed to remove and clean oversized particles for release back to the environment as recovered soil. Pre-processing a... | 11/12/1996 |
| 5523514 | Process for dissolving plutonium and/or other radioactive elements present in solid or liquid products The invention relates to the dissolving of plutonium and/or other radioactive elements in an aqueous solution by microwave heating. According to the invention, solid or liquid products containing plutonium and/or other radioactive elements are introduced into ... | 06/04/1996 |
| 5516496 | Metal and fluorine values recovery from fluoride salt matrices The process for converting feed materials of high mineral content and substantial radioactivity levels to concentrated radionuclide products of high radioactivity levels and to other products of discard or very low radioactivity levels, wherein the feed m... | 05/14/1996 |
| 5494648 | Process for removing thorium and recovering vanadium from titanium chlorinator waste A process for removal of thorium from titanium chlorinator waste comprising: (a) leaching an anhydrous titanium chlorinator waste in water or dilute hydrochloric acid solution and filtering to separate insoluble minerals and coke fractions from soluble me... | 02/27/1996 |
