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| Number | Title | Issue Date |
| 7513979 | Series of electrolysis cells for the production of aluminium comprising means for equilibration of the magnetic fields at the ends of the lines The invention relates to a series (1) of electrolysis cells for the production of aluminum by fusion electrolysis, comprising at least two lines of cells, arranged transversely, an internal correction circuit (200) with at least one internal correction... | 04/07/2009 |
| 7422624 | Method for operating one or more electrolysiscells for production of aluminium A method for operating one or more electrolysis cells (43, 154, 243) for production of aluminium, the cell comprising inert or substantially inert anodes, where an oxygen containing gas (21, 126, 221) evolved by the electrolysis process in the cell is ... | 09/09/2008 |
| 7357853 | Electroplating composite substrates An electrolyte employed to selectively deposit a tin or tin alloy film on a composite substrate. A method for depositing the tin or tin alloy on the composite substrate also is described. ... | 04/15/2008 |
| 7077945 | Cu—Ni—Fe anode for use in aluminum producing electrolytic cell A method of producing aluminum in an electrolytic cell containing alumina dissolved in an electrolyte, the method comprising the steps of providing a molten salt electrolyte at a temperature of less than 900° C. having alumina dissolved therein in an electrolytic c... | 07/18/2006 |
| 7035710 | Device for automating and/or controlling of machine tools or production machines A device for automating and/or controlling machine tools or production machines is described. The device includes at least one computer which is located remote from a machine. The computer operates like a handheld controller and is connected via at least one bus sys... | 04/25/2006 |
| 7018516 | Bipolar multi-purpose electrolytic cell for high current loads A bipolar multi-purpose electrolytic cell for high current loads has a frame, two electrode edge plates with metal electrode sheet, and power supply and of bipolar plates. Each includes a plastic electrode base body with electrode rear spaces and/or with coolings sp... | 03/28/2006 |
| 7001493 | Apparatus for preparing sterilizing water and process for sterilizing water The present invention provides an apparatus for preparing sterilizing water, which comprises an electrolyzer wherein an anode chamber (10) and a cathode chamber (20) partitioned by an ion exchange membrane (40) form a unit cell (A), being altern... | 02/21/2006 |
| 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 |
| 6866768 | Electrolytic cell for production of aluminum from alumina Electrolysis of alumina dissolved in a molten salt electrolyte employing inert anode and cathodes, the anode having a box shape with slots for the cathodes. ... | 03/15/2005 |
| 6818106 | Inert anode assembly A solid material (12′) circumscribing an anode system (10) in an electrolysis apparatus is made from a mixture of cryolite and/or alumina (Al2O3), where the solid material (12′) contacts and surrounds the anodes (14,... | 11/16/2004 |
| 6811677 | Electrolytic cell for the production of aluminum and a method for maintaining a crust on a sidewall and for recovering electricity The present invention relates to an electrolytic cell for the production of aluminum comprising an anode and an electrolytic tank where the electrolytic tank comprises an outer shell made from steel and carbon blocks in the bottom of the tank forming the cathode of ... | 11/02/2004 |
| 6811676 | Electrolytic cell for production of aluminum from alumina An electrolytic cell for producing aluminum from alumina having a reservoir for collecting molten aluminum remote from the electrolysis. ... | 11/02/2004 |
| 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 |
| 6783656 | Low temperature operating cell for the electrowinning of aluminium A cell for the electrowinning of aluminum using anodes (10) made from a alloy of iron with nickel and/or cobalt is arranged to produce aluminum of low contamination and of commercial high grade quality. The cell comprises a cathode (20) of drained conf... | 08/31/2004 |
| 6723222 | Cu-Ni-Fe anodes having improved microstructure A method of producing aluminum in a low temperature electrolytic cell containing alumina dissolved in an electrolyte. The method comprises the steps of providing a molten electrolyte having alumina dissolved therein in an electrolytic cell containing the electrolyte... | 04/20/2004 |
| 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 |
| 6558525 | Anode for use in aluminum producing electrolytic cell A method of producing aluminum in an electrolytic cell containing alumina dissolved in an electrolyte, the method comprising the steps of providing a molten salt electrolyte at a temperature of less than 900° C. having alumina dissolved therein in an ele... | 05/06/2003 |
| 6551473 | Electrolytic cell arrangement for production of aluminum An arrangement of electrolysis pots suitable for use for the production of aluminum by igneous electrolysis according to the Hall-Heroult process with an electrolysis current with intensity Io is disclosed. The arrangement comprises juxtaposed zones inclu... | 04/22/2003 |
| 6511590 | Alumina distribution in electrolysis cells including inert anodes using bubble-driven bath circulation This invention relates to the use of bubble-driven flow to enhance the dissolution and distribution of alumina in an aluminum electrolysis cell operating with inert anodes. By harnessing the driving force of bubbles rising along the sides of a sloped anod... | 01/28/2003 |
| 6436274 | Slow consumable non-carbon metal-based anodes for aluminium production cells A non-carbon, metal-based slow-consumable anode of a cell for the electrowinning of aluminium self-forms during normal electrolysis an electrochemically-active oxide-based surface layer (20). The rate of formation (35) of the layer (20) is substantially e... | 08/20/2002 |
| 6436272 | Low temperature aluminum reduction cell using hollow cathode A method of producing aluminum in an electrolytic cell containing alumina dissolved in an electrolyte. A plurality of non-consumable anodes are disposed substantially vertically in the electrolyte along with a plurality of monolithic hollow cathodes. Each... | 08/20/2002 |
| 6409894 | Lay-out of installations in an electrolysis plant for the production of aluminum The object of the invention is an arrangement of an electrolysis plant for the production of aluminium using the Hall-Heroult process, with which it is possible to limit the pathway length of heavy flows, such as flows of liquid aluminium. According to th... | 06/25/2002 |
| 6402911 | Apparatus for the production of magnesium An apparatus for electrolytic production of magnesium includes a plurality of upright anode elements interspread with a plurality of cathode elements situated within at least one electrolysis compartment. At least one section, defined between two adjacent... | 06/11/2002 |
| 6387229 | Alloy plating There is disclosed an electroplating bath for depositing zinc/manganese alloys on a substrate characterized in that it comprises an aqueous bath free or substantially free of ammonium halide and of fluoroborate which is made up from 10-150 g/l, alkali met... | 05/14/2002 |
| 6372099 | Cells for the electrowinning of aluminium having dimensionally stable metal-based anodes A cell for the electrowinning of aluminium comprising one or more anodes, each having a metal-based anode substrate, comprising a metal core covered with an metal layer, an oxygen barrier layer, one or more intermediate layers and an iron layer. The anode... | 04/16/2002 |
| 6365018 | Surface coated non-carbon metal-based anodes for aluminium production cells A non-carbon, metal-based, high temperature resistant, electrically conductive and electrochemically active anode of an aluminum production cell has a metal-based substrate having an adherent coating applied prior to its immersion into the electrolyte and... | 04/02/2002 |
| 6358393 | Aluminum production cell and cathode A cell for the production of aluminium by the electrolysis of an aluminium compound dissolved in a molten electrolyte, in which an outer mechanical structure forming an outer shell (21) houses therein one or more inner electrically-conductive cathode hold... | 03/19/2002 |
| 6248227 | Slow consumable non-carbon metal-based anodes for aluminium production cells A non-carbon, metal-based slow-consumable anode of a cell for the electrowinning of aluminium self-forms during normal electrolysis an electrochemically-active oxide-based surface layer (20). The rate of formation (35) of the layer (20) is substantially e... | 06/19/2001 |
| 6221232 | Electrolytic refining method for gallium and apparatus for use in the method An electrolytic refining method for gallium by depositing refined gallium on a cathode in an electrolytic solution using a melted raw gallium material as an anode in an electrolytic cell is disclosed, comprising applying a centrifugal force to the melted ... | 04/24/2001 |
| 6210549 | Fluorine gas generation system A fluorine generating cell apparatus, system, and method for the production of fluorine gas having an electrolyte melt flow circulation, a corrosion resistant anode connection, a separation skirt aiding in the circulation of the electrolyte melt, having a... | 04/03/2001 |
| 6146513 | Electrodes, electrolysis apparatus and methods using uranium-bearing ceramic electrodes, and methods of producing a metal from a metal compound dissolved in a molten salt, including the electrowinning of aluminum The present invention includes uranium-bearing ceramic phase electrodes and electrolysis apparatus and electrolysis methods featuring same, including methods of metal production and the like by the electrolytic reduction of oxides or salts of the respecti... | 11/14/2000 |
| 6139704 | Application of refractory borides to protect carbon-containing components of aluminum production cells Carbon-containing components of cells for the production of aluminium by the electrolysis of alumina dissolved in a cryolite-based molten electrolyte are protected from attack by liquid and/or gaseous components of the electrolyte in the form of elements,... | 10/31/2000 |
| 6129821 | Metal magnesium electrolyzer In a metallic Mg electrolyzing device provided with a plurality of electrolytic cells for forming metallic Mg, promotion of current efficiency in each electrolytic cell and decrease in electric power consumption rate are aimed at. In order to transport th... | 10/10/2000 |
| 6117302 | Fuel cell aluminum production A process and apparatus are disclosed for electrolytically smelting alumina to produce aluminum metal, including providing a combination solid oxide fuel cell and electrolytic smelting cell for the production of aluminum from refined alumina positioned ne... | 09/12/2000 |
| 6103090 | Electrocatalytically active non-carbon metal-based anodes for aluminium production cells A non-carbon, metal-based high temperature resistant anode of a cell for the production of aluminium has a metal-based substrate coated with one or more electrically conductive adherent applied layers, at least one electrically conductive layer being elec... | 08/15/2000 |
| 6077415 | Multi-layer non-carbon metal-based anodes for aluminum production cells and method A composite, high-temperature resistant, non-carbon metal-based anode of a cell for the electrowinning of aluminium comprises a metal-based core structure of low electrical resistance, for connecting the anode to a positive current supply, coated with a s... | 06/20/2000 |
| 6063247 | Modified electrolyte and diaphragm for fused salt electrolysis Lithium chloride improves electrolytic cell efficiency and performance when included in the electrolyte. Self-aligning cell diaphragms improve cell efficiency and reduce maintenance.... | 05/16/2000 |
| 6030518 | Reduced temperature aluminum production in an electrolytic cell having an inert anode Aluminum is produced by electrolytic reduction of alumina in a cell having a cathode, an inert anode and a molten salt bath containing metal fluorides and alumina. The inert anode preferably contains copper, silver and oxides of iron and nickel. Reducing ... | 02/29/2000 |
| 5935394 | Multi-polar cell for the recovery of a metal by electrolysis of a molten electrolyte An electrolytic cell for the recovery of metal from a molten electrolyte and an electrode assembly for use in such a cell. The cell (10) comprises an electrode assembly consisting of an anode (17), a cathode (19) and one or more bipolar electrodes (18) di... | 08/10/1999 |
