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| Number | Title | Issue Date |
| 7351322 | Fluorine gas generator and method of electrolytic bath liquid level control A fluorine gas generator for generating fluorine gas by electrolysis of an electrolytic bath comprising a hydrogen fluoride-containing mixed molten salt in which generator the position of the electrolytic bath liquid surface in the electrolytic cell can be safely co... | 04/01/2008 |
| 7329071 | Device for the pneumatic conveying of particulate and powdery bulk material Devices for the pneumatic conveying of particulate and powdery bulk goods to obtain high conveying speeds with low energy expenditure. The devices have a fluidized conveying pipe with fluidizing elements, in which pipe the fabric layers of the fluidizing elements ar... | 02/12/2008 |
| 7285247 | Apparatus and method for operating a fuel reformer so as to purge soot therefrom A method of operating a fuel reformer includes advancing a first air/fuel mixture having a first air-to-fuel ratio into the fuel reformer. The method further includes determining if a soot purge is to be performed and generating a purge-soot signal in response there... | 10/23/2007 |
| 7279143 | Plasmatron-catalyst system A plasmatron-catalyst system. The system generates hydrogen-rich gas and comprises a plasmatron and at least one catalyst for receiving an output from the plasmatron to produce hydrogen-rich gas. In a preferred embodiment, the plasmatron receives as an input air, fu... | 10/09/2007 |
| 7244281 | Method and apparatus for trapping and purging soot from a fuel reformer A plasma fuel reformer assembly for producing reformate gas includes a fuel reformer having an air/fuel input assembly, an electrode assembly, and a soot trap positioned downstream of the electrode assembly. The electrode assembly includes a first electrode and a se... | 07/17/2007 |
| 7179353 | Closed end slotted carbon anodes for aluminum electrolysis cells An electrolysis cell (10) contains a number of carbon anodes (12) having top, bottom and side surfaces, operating in molten electrolyte (17) in an aluminum electrolysis cell (10), where gas bubbles (28) are generated at the anode s... | 02/20/2007 |
| 7169281 | Electrochemical pressurizer/purifier of hydrogen for operation at moderately elevated temperatures (including high-temperature electrochemical pump in a membrane generator of hydrogen) An generator of pure pressurized high pressure hydrogen comprising a molten hydroxide or eutectic mixture electrolyte pressurizing chamber bounded by a hydrogen-selective anode and a hydrogen-selective otherwise gas impermeable cathode respectively connected to a D.... | 01/30/2007 |
| 7144483 | Method and an electrowinning cell for production of metal The present invention relates to a method for production of molten aluminium by electrolysis of an aluminous ore, preferably alumina, in a molten salt mixture, preferably a sodium fluoride—aluminium fluoride-based electrolyte. The invention describes an electrolys... | 12/05/2006 |
| 7083773 | Method for producing nitrogen trifluoride using jet-loop reactors Nitrogen trifluoride is produced with a high yield by the method comprising forming a fast stream of micro droplets of a fused ammonium fluoride salt by rapidly ejecting the fused ammonium fluoride salt into a reactor through a nozzle while circulating the fused amm... | 08/01/2006 |
| 7037414 | Photoelectrolysis of water using proton exchange membranes A photoelectrochemical cell which includes a light transmissive enclosure, a semiconductor photoanode disposed within the light transmissive enclosure, a semiconductor photocathode disposed within the light transmissive enclosure, and an electrolytic solution dispos... | 05/02/2006 |
| 6928869 | Stick for measuring the level of a molten metal bath A measurement rod for measuring the level of a liquid bath is cooled but is provided with a solid end piece so that the bath cannot solidify in front of the orifice of the measurement gas injected in the bath, for which the pressure is being measured. ... | 08/16/2005 |
| 6881308 | Electrochemical synthesis of ammonia A method for electrochemical synthesis of ammonia gas comprising providing an electrolyte between an anode and a cathode, providing hydrogen gas to the anode, oxidizing negatively charged nitrogen-containing species present in the electrolyte at the anode to form an... | 04/19/2005 |
| 6818105 | Apparatus for generating fluorine gas A fluorine gas generating apparatus for generating fluorine gas of high purity by electrolysis of a mixed molten-salt comprising hydrogen fluoride, the fluorine gas generating apparatus comprising an electrolytic cell which is separated into an anode chamber 5 | 11/16/2004 |
| 6797148 | Drained-cathode aluminium electrowinning cell with improved electrolyte circulation A drained-cathode cell for the electrowinning of aluminium comprises one or more anodes (14) suspended over one or more cathodes (16). The or each anode (14) and cathode (16) respectively have a sloped V-shaped active anode surface (22... | 09/28/2004 |
| 6599413 | Method and apparatus for the treatment of a melt A method and apparatus for adding a metal, for example sodium, to a melt of a material, for example aluminum, in a vessel, in which a molten compound of the metal or a solution of a compound of the metal is provided in a container (12), the container bein... | 07/29/2003 |
| 6579438 | Molten salt electrolytic cell having metal reservoir An electrolysis cell (10) for producing a molten metal having a density less than a density of a molten electrolyte used for producing the metal in the cell. The cell includes a section (14) for the electrolysis of a salt of the the metal contained in a m... | 06/17/2003 |
| 6402928 | Aluminium production cell with an insulating cover having individually removable sections A cell of advanced design for production aluminum by the electrolysis of an aluminum compound dissolve in a molten ectrolyte, has a cathode (30) of drained configuration, and at least one non-carbon anode (10) facing the cathode both covered by the electr... | 06/11/2002 |
| 6010605 | Nitrogen trifluoride production apparatus Apparatus is disclosed for the production of nitrogen trifluoride (NF3), starting with an anhydrous molten flux including ammonia (NH3), a metal fluoride (MF), and hydrogen fluoride (HF). The apparatus includes an electrolyzer, an am... | 01/04/2000 |
| 5942097 | Method and apparatus featuring a non-consumable anode for the electrowinning of aluminum The present invention includes a conceptually new process to produce primary aluminum through the modification/adaptation for the HHC of a non-consumable anode of the type used for solid oxide fuel cells (SOFC) with the provision to electrochemically util... | 08/24/1999 |
| 5928489 | Low temperature removal and recovery of hydrogen halides using an electrochemical membrane A low temperature method and apparatus for removing halides from relatively low temperature gas mixtures (below about 150° C.) using an electrochemical cell provided with inert electrodes and an electrolyte which will provide anions compatible with the h... | 07/27/1999 |
| 5855757 | Method and apparatus for electrolysing light metals The present invention provides a new and useful process for the production of a molten metal by electrolysis in an electrolytic cell having an electrolysis compartment, a metal recovery compartment, and a partition separating upper parts of said compartme... | 01/05/1999 |
| 5759382 | Injection of powdered material into electrolysis cells In an electrolysis cell wherein powdered material are added to a bath of molten electrolyte, the anode is provided with a duct through which the powdered material may be fed to the electrolyte. Simultaneously, a gas which is preferably inert, is also fed ... | 06/02/1998 |
| 5618405 | Removal and recovery of hydrogen halides using an electrochemical membrane A method and apparatus for removing halides from high temperature gas mixtures (150°-1000° C.) using an electrochemical cell provided with inert electrodes and an electrolyte which will provide anions compatible with the halide anions formed at the anod... | 04/08/1997 |
| 5567286 | Apparatus for refining a low carbon steel melt An apparatus for electrochemical refining of a low carbon steel melt is provided.... | 10/22/1996 |
| 5312525 | Method for refining molten metals and recovering metals from slags A method for electrochemical refining of an impurity-containing melt using a solid electrolyte ionic conductor to remove the impurity from the melt is provided. Also provided are an apparatus for performing the method, and a batch and a continuous method ... | 05/17/1994 |
| 5290413 | Anodic electrode for electrochemical fluorine cell Carbon electrodes for use as an anode in electrochemical cells for the generation of fluorine by electrolysis of molten KF.2HF electrolyte. Also included is a process for the operation of an electrochemical fluorine cell in combination with a direct fluor... | 03/01/1994 |
| 5242563 | Molten salt reactor for potentiostatic electroplating A molten salt reactor for potentiostatic electroplating that includes a rtor chamber defined by a peripheral wall, a bottom wall and a top cover. The bottom wall of the reactor chamber has an opening, to which a first end of a gas inlet conduit is attach... | 09/07/1993 |
| 5110426 | Method of and an apparatus for introducing at least one halide in the liquid or gaseous state into the bath of a cell for dry electrolysis A method of, and an apparatus for, introducing at least one halide into the bath of cell for dry electrolysis. The method confines a portion of the bath in an annular space and upward motion is imparted to the confined portion of the bath by introduction ... | 05/05/1992 |
| 5076902 | Electrolysis apparatus An electrolysis apparatus has a furnace for setting a silica glass component such as a process tube or crucible, a heater for heating the component, a sensor for measuring a temperature of an inside portion of the furnace, an anode and an cathode for appl... | 12/31/1991 |
| 4995948 | Apparatus and process for the electrolytic reduction of uranium and plutonium oxides An apparatus and process for reducing uranium and/or plutonium oxides to produce a solid, high-purity metal. The apparatus is an electrolyte cell consisting of a first container, and a smaller second container within the first container. An electrolyte fi... | 02/26/1991 |
| 4988417 | Production of lithium by direct electrolysis of lithium carbonate A method of electrolytically producing lithium includes providing an electrolytic cell having an anode compartment and a cathode compartment. The compartments are separated by a porous electrically nonconductive membrane which will be wetted by the electr... | 01/29/1991 |
| 4973390 | Process and apparatus for producing lithium from aluminum-lithium alloy scrap in a three-layered lithium transport cell The present invention provides an apparatus for producing lithium from an aluminum-lithium alloy scrap comprising (a) a dryer for removing moisture from solid aluminum-lithium alloy; (b) a reservoir for heating and holding molten aluminum-lithium alloy; (... | 11/27/1990 |
| 4964973 | Method and apparatus for producing titanium A method of producing titanium. A quantity of titianium is heated in a crucible to provide a melt, and a layer of slag, containing an ionizable titanium compound, such as titanium dioxide, along with ionizable slag constituents, is disposed on the top of ... | 10/23/1990 |
| 4908113 | Apparatus for the electrochemical separation of oxygen An electrochemical separation of oxygen from oxygen containing gaseous mixtures, such as air, using an oxygen containing molten inorganic salt electrolyte retained in a porous matrix between two gas porous catalytic electrodes wherein oxygen is separated ... | 03/13/1990 |
| 4882017 | Method and apparatus for making light metal-alkali metal master alloy using alkali metal-containing scrap A method for making light metal-alkali metal master alloy using alkali metal containing scrap comprises: (a) establishing an electrolytic cell divided into two or more laterally adjacent areas by porous alkali metal ion transport means, said cell includin... | 11/21/1989 |
| 4875985 | Method and appparatus for producing titanium A method of producing titanium. A quantity of titanium is heated in a crucible to provide a melt, and a layer of slag, containing an ionizable titanium compound, such as titanium dioxide, along with ionizable slag constituents, is disposed on the top of t... | 10/24/1989 |
| 4867851 | Process for regulating the acidity of all-Heelectrolytic cells The invention relates to a process for regulating the acidity of the electrolytic bath by recycling fluorinated effluents emitted by the Hall-Heroult electrolytic cells for the production of aluminum, in which said fluorinated effluents are collected, by ... | 09/19/1989 |
| 4859292 | Method and apparatus for H2 S electrolysis A method and apparatus for refining elemental sulphur and hydrogen gas from H2 S is disclosed. More specifically, the present invention relates to a method and apparatus for vapor phase electrolysis of H2 S gas using a molten polysul... | 08/22/1989 |
| 4749463 | Electrometallurgical cell arrangement In this field it is a problem to find practical technical solutions for heat recovery at the same time as regulation and control of the temperature conditions during cell operation is difficult, especially when cooling of the cell is intended. The arrange... | 06/07/1988 |
| 4747924 | Apparatus for producing neodymium-iron alloy A process and an apparatus for producing a neodymium-iron alloy by electrolytic reduction of neodymium fluoride in a bath of molten electrolyte, consisting essentially of 35-76% by weight of neodymium fluoride, 20-60% by weight of lithium fluoride, up to ... | 05/31/1988 |
