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8946498 Apparatus and method for the granulation of radioactive waste, and vitrification method thereof  
An apparatus and method for the granulation of radioactive waste in which a preprocessing method for the vitrification of radioactive waste is simplified to conform to onsite conditions of a...
8921639 Thermal treatment of carbonaceous waste  
A method is provided for the decontamination of radioactive carbonaceous material, such as graphite, in which an injection of steam is planned into the material, concurrent with a first roasting...
8846999 Method for treating a nitric aqueous liquid effluent by calcination and vitrification  
A method for treating a nitric aqueous liquid effluent containing nitrates of metals or metalloids, comprising a step for calcination of the effluent in order to convert the nitrates of metals or...
8754283 Method for partially decontaminating radioactive waste  
Methods for partially decontaminating radioactive waste wherein the waste is first mixed, or brought in contact, with at least one corrosive medium. Activation energy is then supplied to the...
8686213 Disposal and decontamination of radioactive polyvinyl alcohol products  
Methods and apparatus for decontaminating disposable protective products prepared from polyvinyl alcohol (PVA), used in a nuclear power plant, to less than minimum detectable activity (MDA) are...
8604264 Method for processing a nitrous aqueous liquid effluent by calcination and vitrification  
A method for treating a nitric aqueous liquid effluent containing nitrates of metals or metalloids, comprising a step for calcination of the effluent in order to convert the nitrates of metals or...
8343432 Waste decomposition apparatus  
A waste decomposition apparatus has a container-shaped body, a waste inlet for introducing wastes into the body, an outlet for discharging residual ash out of the body after the wastes introduced...
8088312 Method of removing the polymer encapsulating a nuclear fuel pellet  
Method for removing the epoxy and/or phenolic polymer encapsulating a nuclear fuel pellet comprising uranium dioxide UO2, the method comprising the following successive steps: a) the polymer is...
7731912 Evaporator/calciner  
Disclosed herein is provided an evaporator/calciner in which hazardous materials, such as radioactive liquids, are converted into chemically stable, solid forms by evaporating, drying and...
7648615 Method of smoking/burning type volume reduction treatment and apparatus therefor  
In the operation of smoking/burning type volume reduction treatment apparatus (1), referring to view (A), charcoal carbonized layer (T2) is spread over powdery ceramic layer (T1) in the state of...
7465377 Method for destroying a nuclear graphite by gasification in aqueous medium  
A process for the treatment of a nuclear graphite contaminated with radioelements includes subjecting the graphite, immersed in a medium containing water, to high-voltage pulses. The pulses have...
7465843 Recycling system for a waste processing plant  
A recycling system for a waste converting apparatus collects residues from a post-processing means and re-introduces the residues into the apparatus such that the residues are exposed to the high...
7241932 Encapsulation of radioactive waste using a sodium silicate based glass matrix  
The present invention relates to an immobilizing medium for the encapsulation of radioactive waste. The waste immobilizing medium has a sodium silicate based glass matrix in which there is...
7078581 Encapsulation of waste  
A ceramic waste immobilizing material for the encapsulation of high level radioactive waste (HLW), e.g. resulting from the reprocessing of irradiated nuclear fuel. The ceramic waste immobilising...
7034198 Method for decomposing plastic  
A conventional method of pyrolytically decomposing plastic to make low-molecular compounds is poor in efficiency of use of energy due to high heating temperatures (at least 600° C. and 800° C. at...
6625248 Process for the treatment of radioactive graphite  
A process for the treatment of radioactive graphite which includes the following steps: (i) reacting the radioactive graphite at a temperature in the range of from 250° C. to 900° C. with...
6558308 AVS melting process  
The Advanced Vitrification System (AVS) Melting Process is a process for vitrification of waste in a disposable canister. In the process, waste is dropped into the disposable canister from the...
6518477 Simplified integrated immobilization process for the remediation of radioactive waste  
A method for remediating non-homogeneous radioactive waste to significantly reduce the waste mass/volume and to convert such waste to products that meet federal regulatory compliance standards is...
6476285 Method of melting treatment of radioactive miscellaneous solid wastes  
A method of melting treatment of radioactive miscellaneous solid wastes wherein, even when the wastes contain various kinds of substances in a mixed state, each of the substances is efficiently...
6288300 Thermal treatment and immobilization processes for organic materials  
Organic materials are mixed with metal oxide, such as hydrated metal oxides, prior to or during heat treatments in aerated or oxygenated environments to stabilize thermal decomposition or...
6223560 Process of producing a glassy product for multiple applications and products obtained by the process  
A process for recycling trash and obtaining a glassy vitreous product by mixing trash with a vitrifying composition comprising 30% Sodium Sulphate, 7% Quartz, 20% Calcium Carbonate, 23% Sodium...
6120745 Method for the oxidation of at least one alkali metal  
Method for the oxidation of at least one alkali metal, according to which this alkali metal is subjected in molten condition to an oxidation by a reaction with oxygen, characterized in that the...
6084149 Method and apparatus for decomposing hazardous substances using high frequency waves to provide environmentally safe fixation ashes in an incinerator  
A melting furnace that incorporates the autoclave theory and is equipped with a high-frequency (horizontal wave) device for incinerating material and for thermal decomposition and...
6084147 Pyrolytic decomposition of organic wastes  
An organic waste decomposition system and method is described having two reaction vessels in tandem, each using superheated steam augmented by oxygen for decomposing a wide variety of organic...
6069290 Waste treatment process and reactant metal alloy  
A waste treatment process includes charging a reactor container (12) with a reactant alkaline metal alloy (10) and isolating the reactant alloy from oxygen gas. After heating the reactant alloy...
6060635 Method for treating hazardous waste  
Procedure for the treatment of radioactive hazardous waste, in which procedure oxygen is treated with radio-frequency electromagnetic radiation in a manner known in itself so that the oxygen forms...
5986159 Chemical tailoring of steam to remediate underground mixed waste contaminents  
A method to simultaneously remediate mixed-waste underground contamination, such as organic liquids, metals, and radionuclides involves chemical tailoring of steam for underground injection. Gases...
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...
5909654 Method for the volume reduction and processing of nuclear waste  
A method and apparatus for the volume reduction and processing of solid organic waste, in particular ion exchange media from nuclear facilities containing sulfur or chlorine. A method and...
5901169 Apparatus for discharging molten matter from cold crucible induction melting furnace  
Molten matter is discharged from a cold crucible induction melting furnace provided with a furnace body disposed within a high-frequency coil for heating the furnace body. A metallic discharging...
5877394 Method for treating waste containing stainless steel  
A centrifugal plasma arc furnace is used to vitrify contaminated soils and other waste materials. An assessment of the characteristics of the waste is performed prior to introducing the waste into...
5835866 Method for treating radioactive waste  
Ion exchange resins contaminated with a radioactive component are treated by exposing the contaminated ion exchange resins to a bound radio frequency electric field for uniformly heating them to...
5774815 Dry halide method for separating the components of spent nuclear fuels  
The invention is a nonaqueous, single method for processing multiple spent nuclear fuel types by separating the fission- and transuranic products from the nonradioactive and fissile uranium...
5732362 Method for treating radioactive laundry waste water  
The present invention relates to a method for treating radioactive laundry waste water generated from a nuclear power plant, nuclear fuel reprocessing plant, or radioactive nuclides handling...
5678241 Process for concentrating thorium containing magnesium slag  
The present invention describes a process to reduce the volume and/or weight of magnesium slag when the magnesium slag contains radioactive thorium. The process contacts the magnesium slag as an...
5649894 Compositions and methods for waste treatment  
Methods for waste treatment and compositions of stabilized waste elements are provided, typically for the disposal of arsenical wastes. Arsenic trioxide waste produced as a by-product of metal...
5637127 Plasma vitrification of waste materials  
This invention provides a process wherein hazardous or radioactive wastes in the form of liquids, slurries, or finely divided solids are mixed with finely divided glassformers (silica, alumina,...
5613243 Stabilization of radionuclides into wastes  
The specification discloses a process for stabilizing radionuclides extracted during the upgrading of minerals. The process comprises forming a composition of a radionuclide and a component and...
5550311 Method and apparatus for thermal decomposition and separation of components within an aqueous stream  
An apparatus and method for treating materials that present disposal problems is provided. The treatment takes place within an aqueous stream and in an oxygen-deficient multiple zone system, and...
5536896 Waste processing  
A method for the processing of solid organic sulfur-containing waste, in particular ion exchange media, from nuclear facilities, which method comprises that in a first step a) the waste is...
5489737 Radioactive waste processing system  
A processing system for radioactive waste is composed of an adjusting tank having a sampling port, a solidification processing system, and a package inspection apparatus, and a package, of which...
5476989 Adsorbent of radioactive nuclides and process for volume-reduction treatment of radioactive waste  
An adsorbent useful for the adsorption of radioactive nuclides which comprises fibrous active carbon having a specific surface area of 1,000 m2 /g or more and an equilibrium moisture regain of 10%...
5457266 Process for treating radioactive waste  
A process for treating radioactive waste in the form of contaminated powdery ionic exchange resin to make it suitable for final storage by reducing its volume as much as possible, includes...
5449505 Method for disposing of radioactive graphite and silicon carbide in graphite fuel elements  
Method for destroying radioactive graphite and silicon carbide in fuel elements containing small spheres of uranium oxide coated with silicon carbide in a graphite matrix, by treating the graphite...
5397481 Submergible torch for treating waste solutions and method thereof  
A submergible torch for removing nitrate and/or nitrite ions from a waste solution containing nitrate and/or nitrite ions comprises: a torch tip, a fuel delivery mechanism, a fuel flow control...
5353718 Remediation of low level radioactive mixed waste in a fluidized bed incinerator  
Mixed waste containing organic constituents and low level radioactive waste is remediated in a circulating fluidized bed combustor. Three separators are used to filter the flue gas and separate...
5324485 Microwave applicator for in-drum processing of radioactive waste slurry  
A microwave applicator for processing of radioactive waste slurry uses a waveguide network which splits an input microwave of TE10 rectangular mode to TE01 circular mode. A cylindrical body has...
5288434 Hepa filter dissolution process  
A process for dissolution of spent high efficiency particulate air (HEPA) filters and then combining the complexed filter solution with other radioactive wastes prior to calcining the mixed and...
5185104 Method of treatment of high-level radioactive waste  
A method of treatment of a high-level radioactive waste comprising heating the radioactive waste at a high temperature of about 500° to 3000° C. to vaporize part of the elements contained in the...
4935167 Method and apparatus for treating radioactive waste  
A process and apparatus whereby radioactive waste can be treated such as produced from within a nuclear power plant comprising the steps whereby waste is admitted to a dual 90 degree conveyor...

Matches 1 - 50 out of 70 1 2 >