|
Match
|
Document |
Document Title |
|
|
7622090 |
Method for separating uranium (VI) from actinides(IV) and/or actinides (VI) and its uses
The invention relates to a method for separating uranium(VI) from one or more actinides selected from actinides(IV) and actinides(VI) other than uranium(VI), characterized in that it comprises the...
|
|
|
7169370 |
Method for co-precipitating actinides and method for preparing mixed actinide oxides
The present invention generally relates to the preparation of mixed actinide oxides, such as mixed oxides of uranium and plutonium (U, Pu) O 2 , by simultaneously coprecipitation and then...
|
|
|
6623711 |
Siloxane-based resin and method for forming insulating film between interconnect layers in semiconductor devices by using the same
Disclosed herein are siloxane-based resins prepared by hydrolyzing and polycondensing cyclic and/or cage-shape siloxane compounds, optionally with at least one silane compound, in an organic...
|
|
|
6419832 |
Process for removing dissolved uranium from water
A process for removing dissolved uranium from water is provided. The process basically comprises (a) mixing phosphoric acid or particulate bone ash with the water, (b) mixing calcium hydroxide with...
|
|
|
5841200 |
Process for the production of nuclear fuel pellets based on mixed (U, Pu)O.sub.2 oxide with the addition of an organic, sulphur product
Process for the production of nuclear fuel pellets based on mixed uranium and plutonium oxide having a specific plutonium content from a charge of UO 2 and PuO 2 powders by lubrification,...
|
|
|
5640668 |
Removal of dissolved actinides from alkaline solutions by the method of appearing reagents
A method of reducing the concentration of neptunium and plutonium from alkaline radwastes containing plutonium and neptunium values along with other transuranic values produced during the course of...
|
|
|
5292697 |
Nondestructive trivalent cation exchange of molecular sieves
A method is provided for the nondestructive trivalent cation ion exchange of molecular sieves comprising ion exchanging at least one molecular sieve with at least one trivalent cation, wherein the...
|
|
|
5104549 |
Waste treatment process for alkaline waste liquid
There is disclosed a waste treatment process for alkaline waste liquid in which substances to be removed exist in ionic and colloidal states. In the process, powdered tannin is added to the waste...
|
|
|
5077020 |
Metal recovery process using waterglass
Sodium silicate (waterglass) is added to a waste process stream containing metal to form a waterglass sludge containing the metal contaminants. The waterglass sludge matrixed with the metal is...
|
|
|
5069821 |
Stable sodium tetraphenylborate solutions
Stable alkaline aqueous solutions of sodium tetraphenylborate.
|
|
|
4871518 |
Recovery or removal of uranium by the utilization of acorns
This invention can treat a uranium-containing solution of high or low concentration and/or the waste generated from uranium conversion processes, etc. It is characterized by the use of acorns, nuts...
|
|
|
4844873 |
Separation and recovery of solids from liquids containing them using the ionic flotation process
Improvement to the separation and recovery of solids from liqiuds containing them, and using a ionic flotation process, implementing an installation characterized in that it comprises at least a...
|
|
|
4840765 |
Precipitate hydrolysis process for the removal of organic compounds from nuclear waste slurries
A process for removing organic compounds from a nuclear waste slurry comprising reacting a mixture of radioactive waste precipitate slurry and an acid in the presence of a catalytically effective...
|
|
|
4793947 |
Radioactive waste treatment method
The present invention relates to a method and an apparatus for producing a waste package of radioactive waste containing particles of radioactive waste material of low modulus of elasticity,...
|
|
|
4769180 |
Process for separately recovering uranium and hydrofluoric acid from waste liquor containing uranium and fluorine
A process for separately recovering uranium and hydrofluoric acid from a waste liquor containing uranium and fluorine comprises a neutralizing precipitation step wherein a magnesium compound is...
|
|
|
4755328 |
Process for treating uraniferous solutions by the addition of an aluminum salt
The invention relates to a process for decontaminating and adjusting the pH of uraniferous solutions to render them compatible with the natural environment into which they may be discharged. This...
|
|
|
4636367 |
Removal of radium from aqueous liquids
A process for separating radium-226 from an aqueous liquid by adding a precipitant to the liquid. The liquid, including the precipitant, is passed upwardly through a particulate bed to assist...
|
|
|
4627937 |
Process for denitrating nitric acid and actinide containing waste solutions while simultaneously separating the actinides
A process for denitrating aqueous, nitric acid and salt containing waste solutions in which actinides are present, with simultaneous separation of the actinides, comprises agitating the waste...
|
|
|
4626416 |
Insoluble chelating compositions
The present invention relates to insoluble compositions, which are capable of removing metal (e.g. selectively) from solution (e.g. Fe 3 + from a liquid nutrient medium so as to lower the Fe 3 + ...
|
|
|
4549985 |
Waste disposal process
Method for precipitating and removing soluble metal compounds from solutions of phosphoric acid. The method is useful in the disposal of metal-containing phosphoric acid waste from electrolytic...
|
|
|
4501691 |
Process for treating a radioactive liquid waste
A process for treating a radioactive liquid waste is disclosed, in which a radioactive liquid waste containing uranium and β-decay nuclides, daughter nuclides of uranium, is treated by combination...
|
|
|
4432893 |
Precipitation-adsorption process for the decontamination of nuclear waste supernates
High-level nuclear waste supernate is decontaminated of cesium by precipitation of the cesium and potassium with sodium tetraphenyl boron. Simultaneously, strontium-90 is removed from the waste...
|
|
|
4431610 |
Method of recovering uranium from wet process phosphoric acid
An economically advantageous method of recovering uranium from a wet process phosphoric acid solution through the steps of making hemihydrate gypsum contact with the acid solution thereby...
|
|
|
4377508 |
Process for removal of radioactive materials from aqueous solutions
A process for removing dissolved radioactive materials from aqueous solution by incorporating lime in a sufficient dosage to adjust the pH of the water to greater than 11.0 while simultaneously...
|
|
|
4349513 |
Process for recovering uranium and/or thorium from a liquid containing uranium and/or thorium
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...
|
|
|
4338286 |
Process for recovering uranium and/or thorium from a liquid containing uranium and/or thorium
A process for recovering uranium and/or thorium from a liquid containing uranium and/or thorium is disclosed, which comprises making a precipitate composed mainly of amorphous silica formed by...
|
|
|
4312839 |
Process for controlling calcium in a leach operation
A method for controlling calcium, e.g. calcite, build-up in the leach solution of a uranium and/or related values recovery operation wherein the leach solution is flowed through a value bearing ore...
|
|
|
4276235 |
Method for purifying bidentate organophosphorous compounds
Bidentate organophosphorous compounds are purified of undesirable impurities by contacting a solution of the compounds with a mercuric nitrate solution to form an insoluble mercuric bidentate...
|
|
|
4269706 |
Method of decontaminating radioactive process waste waters
Process waste waters at a pH of about 7 contaminated with radioactive isotopes are decontaminated by (a) adjusting the pH to about 5.8, (b) adding CaO or Ca(OH) 2 to raise the pH to about 8.5, (c)...
|
|
|
4156646 |
Removal of plutonium and americium from alkaline waste solutions
High salt content, alkaline waste solutions containing plutonium and americium are contacted with a sodium titanate compound to effect removal of the plutonium and americium from the alkaline waste...
|
|
|
4120936 |
Process for conversion of UF.sub.6 to UO.sub.2
UO 2 for nuclear fuel is made from UF 6 . The method involves injecting UF 6 , with or without a nitrogen carrier, into a solution containing 1) an inert reaction medium, 2) water, 3) a Lewis...
|
|
|
3896045 |
Decontamination process for radio-active liquids
Radio-active liquids and the products thereof are decontaminated by contacting the radio-active liquid with a sorbent in a sulfate-containing medium selected from the group consisting of a barium...
|
|
|
3853980 |
RUTHENIUM DECONTAMINATION OF SOLUTIONS DERIVED FROM THE PROCESSING OF IRRADIATED FUELS
The method consists in adding ferrous ions and cupric ions to the solution arising from the processing of irradiated fuels after the solution has first been put into contact if necessary with a...
|
|
|
3761563 |
REACTING METAL OXIDES WITH A SULFATE AND PYROSULFATE MIXTURE
The invention relates to a process for converting oxides to sulfates. The ntemplated oxides are slowly soluble or insoluble in acids and/or lyes, particularly the oxides found in nuclear fuel...
|
|
|
3663251 |
ADDITIVE FOR CONCRETE AND MORTAR
The invention relates to an additive or mixture for improving the workability and strength and reducing the air content of inorganic binder, and especially hydraulic cement-containing compositions...
|
|
|
3551119 |
PRECIPITATION METHOD OF RECOVERING ELEMENT 95 FROM CONTAMINANTS
|
|
|
3518328 |
PROCESS FOR PREPARING MICROSPHERES OF URANIUM,PLUTONIUM OR THORIUM CARBIDE
|
|
|
3449065 |
METHOD OF SEPARATION OF RADIUM
|
|
|
3374068 |
Irradiated fuel reprocessing
|
|
|
3372999 |
Continuous precipitation process for recovering uranium and/or plutonium from solution
|
|
|
3195977 |
Recovery of plutonium and/or uranium values from aqueous solutions
|
|
|
3154375 |
Potassium plutonium sulfate separation process
|
|
|
3130960 |
Recovery of uranium by carbonated water and surface action agents and wetting agents
|
|
|
3093452 |
Precipitation of zirconium and fluoride ions from solutions
|
|
|
3011865 |
Separation of uranium and plutonium oxides
|
|
|
2991150 |
Purification of plutonium using a cerium precipitate as a carrier for fission products
|
|
|
2981593 |
Process for retaining and extracting uranium contained in uraniferous solutions
|
|
|
2936318 |
Fission product removal from organic solutions
|
|
|
2934403 |
Recovery of americium
|
|
|
2934402 |
Precipitation method for the separation of plutonium and rare earths
|