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| Number | Title | Issue Date |
| 8168046 | Method and apparatus for treating a component of a gas turbine engine A surface treatment device for applying a surface treatment medium to an article is provided with the surface treatment device having an application member for applying the surface treatment medium to the article and an electrode, which applies an electrical potenti... | 05/01/2012 |
| 8075747 | Enhancement of aluminum tapping by application of targeted electromagnetic field Systems, methods and apparatus for facilitating removal of molten metal from an electrolysis cell are provided. In one embodiment, a system includes a container and an electrical source coupled to the container. The electrical source may be configured to provide com... | 12/13/2011 |
| 7959772 | Aluminium electrowinning cells with sloping foraminate oxygen-evolving anodes A cell for the electrowinning of aluminum (50) from alumina, comprises an inclined plate-like or grid-like open anode structure (25) which has a generally v-shaped configuration in cross-section. The anode structure (25) has a downwardly-oriente... | 06/14/2011 |
| 7846309 | Metal electrowinning cell with electrolyte purifier A cell for electrowinning a metal, in particular aluminium, from a compound thereof dissolved in an electrolyte (30) comprises an anode (40) and a cathode (10,11) that contact the electrolyte (30), the cathode (10,11) being during ... | 12/07/2010 |
| 7429314 | Device for controlling the travel distance of a chisel in a feeding system for an aluminium production electrolytic cell Device for equipment of a cell (1) comprising an electrolytic bath (4) covered with a crust (5), with a chisel (13) that can be moved vertically between a high position in which it is above the crust (5) and a low position in which... | 09/30/2008 |
| 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 |
| 7311808 | Device and method for increasing mass transport at liquid-solid diffusion boundary layer A device and method for increasing the mass transport rate of a chemical or electrochemical process at the solid and fluid interface in a fluid cell. The device includes a membrane in close contact with surface of the work piece, to separate the process cell into tw... | 12/25/2007 |
| 7294244 | Microelectronic workpiece processing tool including a processing reactor having a paddle assembly for agitation of a processing fluid proximate to the workpiece An integrated tool is provided including at least one workpiece processing station having a paddle assembly. In accordance with another independent aspect of the present invention, the workpiece processing station is adapted for adjusting the level of the processing... | 11/13/2007 |
| 7281464 | Inlet monitor and latch for a crust breaking system A system for selectively controlling movement of a piston between first and second positions, the system comprising a controller selectively actuated to enable fluid communication between a device and a source of pressurized fluid, a control valve for enabling fluid... | 10/16/2007 |
| 7235161 | Stable anodes including iron oxide and use of such anodes in metal production cells Stable anodes comprising iron oxide useful for the electrolytic production of metal such as aluminum are disclosed. The iron oxide may comprise Fe3O4, Fe2O3, FeO or a combination thereof. During the electrolytic aluminum p... | 06/26/2007 |
| 7192508 | Devices to conduct current to or from the electrodes in electrolysis cells, methods for preparation thereof, and an electrolysis cell and a method for production of aluminum by electrolysis of alumina solved in a melted electrolyte Device (1) to conduct current to or from the electrodes of an electrolysis cell, which device in the direction towards the electrolysis cell comprises three types of segments; at least one outer segment (2) joined with at least one intermediate segment... | 03/20/2007 |
| 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 |
| 7090760 | Method of reducing spent oxide nuclear fuel into nuclear-fuel metal using LiCl-LiO salt, cathode electrode assembly used in the method, and reduction device including the assembly Disclosed are a method of reducing spent oxides nuclear fuel to nuclear-fuel metal, in which metal oxides are reduced to metals using an electrochemical reduction device with LiCl—Li2O salt as an electrolyte, a cathode electrode assembly used in the met... | 08/15/2006 |
| 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 |
| 7070689 | Acid dip for zinc-manganese alloy electrodeposition The invention relates to a dip comprising an acid aqueous solution having no ammonium ion, fluoroborate ions or citrate ion and containing per liter: between 10 and 60 g of Zn2+ ions and between 20 and 100 g of Mn2+ ions. The invention is chara... | 07/04/2006 |
| 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 |
| 7001497 | Process and apparatus for positioning replacement anodes in electrolytic cells A spent anode is replaced with a new anode in an electrolysis cell having an anode bus bar and an anode rod contacting the bus bar. A desired distance (D4) from the bus bar to a reference point on or adjacent to an anode rod for the new anode is calculated, t... | 02/21/2006 |
| 6977031 | Anode assembly An anode assembly for conducting electrical energy to an electrolytic smelting cell including an anode of high electrically conductive material connected to a yoke, the ends of the yoke being receivable within anodes, the yoke including a core of highly electrically... | 12/20/2005 |
| 6913682 | Cells for the electrowinning of aluminium having dimensionally stable metal-based anodes A cell for the electrowinning of aluminium comprising one or more anodes (10), each having a metal-based anode substrate, for instance comprising a metal core (11) covered with an metal layer 12, an oxygen barrier layer (13), one or more ... | 07/05/2005 |
| 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 |
| 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 |
| 6773574 | Method and apparatus for removing thimbles from the stubs of an anode An apparatus and method for removing thimbles (12) from stubs (20) of an anode yoke which includes the step of advancing a ram (20) towards each stub with the force applied by the ram against the stub being limited to a preset maximum, and anoth... | 08/10/2004 |
| 6723221 | Insulation assemblies for metal production cells Insulation assemblies provide reduced heat loss from electrolytic metal production cells such as inert anode aluminum production cells. The insulation assemblies may be located at the end, side and/or center aisles of the cell, and may be supported by the anodes and... | 04/20/2004 |
| 6692620 | Aluminium electrowinning cell with sidewalls resistant to molten electrolyte A drained cathode cell for the electrowinning of aluminium comprises a cell bottom (20) arranged to collect product aluminium and thermic insulating sidewalls (55,55') lined with a molten electrolyte resistant sidewall lining (50) which is made of materia... | 02/17/2004 |
| 6682643 | Aluminium electrowinning cells having a V-shaped cathode bottom and method of producing aluminium A cell for the electrowinning of aluminium comprises a plurality of metal-based anodes facing and spaced part from an aluminium-wettable drained cathode surface on which aluminium is produced. The drained cathode surface is formed along the cell by upper ... | 01/27/2004 |
| 6649035 | Low energy and non-heat transferring crust breaking system A pneumatic control system is provided for selectively controlling movement of a pneumatically-operated device between first and second working positions. The pneumatically-operated device includes a working portion and a pneumatic-control portion. The pn... | 11/18/2003 |
| 6641713 | Apparatus and system for refining sodium An object of the invention is to provide a sodium refining apparatus which has a simple constitution and does not deteriorate a solid electrolyte employed therein. The sodium refining apparatus of the invention, in which impurities contained in sodium are... | 11/04/2003 |
| 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 |
| 6576362 | Electrochemical cell system An electrochemical cell system is disclosed, wherein at least one electrochemical cell is provided in a vessel. The electrochemical cells each include a membrane electrode assembly having a first electrode, a second electrode, and a membrane disposed betw... | 06/10/2003 |
| 6572757 | Method for producing aluminum and electrolytic cell with improved alumina feed device An electrolytic cell (40) for the electrowinning of aluminium comprises a plurality of anodes (60) immersed in a molten electrolyte (50), each anode (60) having an oxygen-evolving active surface of open structure facing and spaced by an inter-electrode ga... | 06/03/2003 |
| 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 |
| 6551489 | Retrofit aluminum smelting cells using inert anodes and method Conventional aluminum smelting cells are retrofitted with inert anode assemblies which replace the consumable carbon anodes of the cell. The inert anode assemblies may include multiple inert anodes, and may also include insulation for reducing heat loss d... | 04/22/2003 |
| 6547937 | Microelectronic workpiece processing tool including a processing reactor having a paddle assembly for agitation of a processing fluid proximate to the workpiece An integrated tool is provided including at least one workpiece processing station having a paddle assembly. In accordance with one aspect of the invention, the workpiece processing station is adapted for adjusting the level of the processing fluid relati... | 04/15/2003 |
| 6521116 | Cells for the electrowinning of aluminium having dimensionally stable metal-based anodes A cell for the electrowinning of aluminium comprising one or more anodes (10), each having a metal-based anode substrate, for instance comprising a metal core (11) covered with an metal layer 12, an oxygen barrier layer (13), one or more intermediate laye... | 02/18/2003 |
| 6475654 | Automatic reactant dispenser for an electrolysis cell An automatic reactant dispenser for use in an electrolysis cell for electrolyzing a reactant product into reactants, the dispenser comprising a container generally surrounding the electrodes with a cover that controls dispensation of a reactant produced a... | 11/05/2002 |
| 6440294 | Crust hole repair for electrolytic cells A process for repairing a hole in the crust of an electrolytic cell. The hole is repaired by covering it with a receptacle containing solid particles. The receptacle comprises a polymeric material. More preferably, the receptacle comprises a cellulosic ma... | 08/27/2002 |
