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| Number | Title | Issue Date |
| 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 |
| 6800192 | 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 ... | 10/05/2004 |
| 6783655 | Slurry and method for producing refractory boride bodies and coatings for use in aluminium electrowinning cells A refractory boride body or coating made of a boride of titanium, chromium, vanadium, ziconium, hafnium, niobium, tantalum, molybednum and cerium is produced from a slurry of the refractory boride or a precursor in a collidal carrier preferably composed of two more ... | 08/31/2004 |
| 6627062 | Graphite cathode for the electrolysis of aluminium In this cathode, which is a single block, the electrical resistivity is heterogeneous along its longitudinal axis, this resistivity being higher in the end regions of the cathode (3) than in the central region of the latter.... | 09/30/2003 |
| 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 |
| 6287447 | Method of producing aluminum in a drained cathode cell 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,... | 09/11/2001 |
| 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 |
| 5217583 | Composite electrode for electrochemical processing and method for using the same in an electrolytic process for producing metallic aluminum A dimensionally stable combustion synthesis product of a composition containing at least 20% by weight of a particulate combustible material; at least 15% by weight of a particulate filler material capable of providing desired mechanical and electrical pr... | 06/08/1993 |
| 5019225 | Molten salt electrowinning electrode, method and cell A bipolar electrode for electrowinning aluminum or other metals by electrolysis of a molten salt electrolyte containing a dissolved compound of the metal to be won comprises an anodic and a cathodic surface which are both preserved during operation by dis... | 05/28/1991 |
| 4919771 | Process for producing aluminum by molten salt electrolysis The invention concerns a process for producing aluminum by molten salt electrolysis, whereby a melt consisting of alkali halides and/or alkali earth halides is used as electrolyte and a mixture containing aluminum oxide and carbon is used as the anode.... | 04/24/1990 |
| 4613414 | Method for magnesium production An electrolytic cell for metal, particularly Mg, production includes a cathode or intermediate bipolar electrode having a cathodic face provided with a plurality of small cavities shaped to trap droplets of molten metal formed during electrolysis. The cav... | 09/23/1986 |
| 4576690 | Separation of volatile impurities from aluminum chloride before electrolysis Separating volatile impurities from AlCl3 by supplying impure AlCl3 into a molten salt bath of a gas separation compartment in an electrolysis cell. The impurities are removed from the compartment and molten salt bath containing diss... | 03/18/1986 |
| 4504366 | Support member and electrolytic method Disclosed is an electrolytic cell including means for holding a first electrode in position relative to a second electrode to form an inter-electrode zone of specified dimension for containing electrolyte, wherein the first electrode is held essentially f... | 03/12/1985 |
| 4400247 | Method of producing metals by cathodic dissolution of their compounds Metals and metalloids are produced by cathodically dissolving compounds thereof in electrolytic cells. These cells have one or more heterogenous bipolar electrodes in series, with a terminal electrode as cathode and another terminal electrode as a soluble... | 08/23/1983 |
| 4259161 | Process for producing aluminum and electrodes for bipolar cell A carbonaceous electrode for use in a bipolar electrolytic cell is treated on one side with a source of aluminum to form an adherent layer of aluminum carbide thereon. The electrode is arranged in the cell such that on the passage of electrolyzing current... | 03/31/1981 |
| 4187155 | Molten salt electrolysis A novel method of molten salt electrolysis and novel electrolytic cells for molten salt electrolysis wherein the anodes for the electrolysis are comprised of a self-sustaining matrix of sintered powders of at least one oxycompound such as oxides, multiple... | 02/05/1980 |
| 4179346 | Selective use of wettable and non-wettable graphite electrodes in electrolysis cells Metal such as aluminum is produced electrolytically from metal chlorides or other halides dissolved in a molten solvent bath of higher decomposition potential in a cell including one or more carbonaceous or graphite cathode surfaces spaced from opposed an... | 12/18/1979 |
| 4168215 | Situ cleaning of electrolytic cells A method is provided for removing aluminum or compounds thereof causing a short circuit in an electrolytic cell containing aluminum chloride dissolved in a molten solvent of higher decomposition potential, the cell used for the production of aluminum from... | 09/18/1979 |
| 4154661 | Lowermost bipolar spacing for electrolytic cell An electrolytic cell in which a terminal cathode and a bipolar electrode located immediately adjacent the cathode are spaced apart a distance greater than the height at which molten metal produced on the cathode will accumulate before the metal begins to ... | 05/15/1979 |
| 4151061 | Aluminum electrolytic cell An aluminum electrolytic cell wherein, in a sealed type electrolytic cell having a raw material aluminum chloride feeding port and chlorine gas discharging ports in a top section and a molten metal reservoir in a bottom section and provided with an electr... | 04/24/1979 |
| 4140595 | Use of materials in molten salt electrolysis A method including producing metal by electrolysis in a molten salt bath, in a bipolar cell, with the improvement involving electrically isolating the bath with a continuous, electrically insulating material in the portion of the cell containing the bath,... | 02/20/1979 |
| 4140594 | Molten salt bath circulation patterns in electrolysis A method for producing metal by electrolysis in a molten salt bath containing superimposed electrodes, at least one of which is a bipolar electrode. The arrangement of the electrodes creates interelectrode spaces between them. Bath is swept through these ... | 02/20/1979 |
| 4121983 | Metal production A process is provided for producing aluminum in an electrolytic cell containing aluminum chloride dissolved in a molten solvent of higher decomposition potential. The cell has a terminal anode, a terminal cathode and a bipolar electrode arranged to operat... | 10/24/1978 |
| 4021317 | Method of operating an electrolytic cell Methods of switching electrical current in the operation of an electrical load device such as an electrolytic cell having at least one anode and one cathode. At least one source of electrical current is connected to the anode and cathode at two spaced apa... | 05/03/1977 |
| 3930967 | Process for the electrolysis of a molten charge using inconsumable bi-polar electrodes A process for the production of metals by the electrolysis of metal compounds dissolved in a molten electrolyte, in particular for the production of aluminum from aluminum oxide. The electric power is passed through a multi-cell furnace with at least one ... | 01/06/1976 |
