Did You Know...
...that it was melting ice cream that inspired the invention of the outboard motor? It was a lovely August day and Ole Evinrude was rowing his boat to his favorite island picnic spot. As he rowed, he watched his ice cream melt and wished he had a faster way to get to the island. At that moment the idea for the outboard motor was born!
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| Number | Title | Issue Date |
| 7255783 | Use of infrared imaging to reduce energy consumption and fluoride consumption Operations in an electrolytic cell for producing aluminum are controlled by sensing infrared radiation on an outer surface of a cell chamber to determine an actual temperature. When the actual temperature is greater than a target temperature, a crust hole is repaire... | 08/14/2007 |
| 7192511 | Method for regulating an electrolytic cell The invention relates to a regulation method for an electrolytic cell for the production of aluminium by means of reduction of alumina dissolved in a molten cryolite bath, wherein a solidified bath ridge is formed on the internal walls of the pot, a quantity B, refe... | 03/20/2007 |
| 7135104 | Method for regulating an electrolysis cell The invention relates to a regulation method for an electrolytic cell for the production of aluminium by means of reduction of alumina dissolved in a molten cryolite bath and comprises the addition, in the electrolyte bath, during pre-determined time intervals p ref... | 11/14/2006 |
| 7112269 | Measuring duct offgas temperatures to improve electrolytic cell energy efficiency Operations in a cell for electrolytic production of aluminum are controlled by establishing a standard rate of addition of aluminum fluoride to a molten electrolyte covered by a crust; establishing a target temperature for a duct carrying offgas from a chamber conta... | 09/26/2006 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 6719889 | Cathode for aluminum producing electrolytic cell A method of producing aluminum in an electrolytic cell comprising the steps of providing an anode in a cell, preferably a non-reactive anode, and also providing a cathode in the cell, the cathode comprised of a base material having low electrical conductivity reacti... | 04/13/2004 |
| 6607656 | Use of recuperative heating for start-up of electrolytic cells with inert anodes The present invention is directed to methods for preheating a molten salt electrolysis cell having inert anodes (24) using recuperative gas heating by combusting a first gas outside the cell chamber (20) in a combustion chamber (2) and using to heat a sec... | 08/19/2003 |
| 6558526 | Method of converting Hall-Heroult cells to inert anode cells for aluminum production A method is provided for retrofitting conventional aluminum smelting cells with inert anode assemblies which replace the consumable carbon anodes of the cell. The inert anode assemblies are pre-heated prior to introduction into the operating cell. Insulat... | 05/06/2003 |
| 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 |
| 6485628 | Bath for electrolytic reduction of alumina and method therefor An electrolytic bath for use during the electrolytic reduction of alumina to aluminum. The bath comprises a molten electrolyte having the following ingredients: (a) AlF3 and at least one salt selected from the group consisting of NaF, KF, and L... | 11/26/2002 |
| 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 |
| 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 |
| 6419813 | Cathode connector for aluminum low temperature smelting cell Cathode connector means for low temperature aluminum smelting cell for connecting titanium diboride cathode or the like to bus bars.... | 07/16/2002 |
| 6419812 | Aluminum low temperature smelting cell metal collection A method of producing aluminum in an electrolytic cell containing alumina dissolved in an electrolyte. The method comprises the steps of providing a molten salt electrolyte in an electrolytic cell having an anodic liner for containing the electrolyte, the... | 07/16/2002 |
| 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 |
| 6258246 | 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 (40) lined with a molten electrolyte resistant sidewall lining (50), in particular containing si... | 07/10/2001 |
| 5882499 | Process for regulating the temperature of the bath of an electrolytic pot for the production of aluminium The process according to the invention solves the problem of the individual thermal regulation of electrolytic pots. It involves acting on the temperature of the pot by means of the setpoint resistance Ro which is modulated so as to correct the temperatur... | 03/16/1999 |
| 5876584 | Method of producing aluminum A method of producing aluminum, comprising the steps of: a) providing an aluminum reduction Hall cell for reduction of alumina in molten fluoride electrolyte containing cryolite, the cell comprising a cathode, an anode and a sidewall, the sidewall having a thi... | 03/02/1999 |
| 5057194 | Salt-based melting process A continuous salt-based process is provided for melting and reclaiming aluminum from aluminum scrap containing impurities including heating a molten salt in a heat bay, mixing the heated salt with aluminum scrap or skim in a charge bay to form a molten ch... | 10/15/1991 |
| 4608135 | Hall cell The invention is an improvement in the construction of a Hall cell for the production of aluminum by electrolytic reduction of alumina in a molten salt bath wherein a conductive carbon cathode lining comprising a bottom wall and a sidewall is surrounded a... | 08/26/1986 |
| 4505787 | Process for production of a carbide by-product with microwave energy and aluminum by electrolysis Means and method for utilizing radiated electromagnetic energy to elevate at least one of two or more reactants 16 to a temperature at which a chemical reaction will take place so as to provide a desired reaction product 161. In practice, at least one of ... | 03/19/1985 |
| 4333803 | Method and apparatus for controlling the heat balance in aluminum reduction cells A method and apparatus are provided for maintaining a predetermined energy balance in a device, such as an aluminum reduction cell. The apparatus includes a relatively short and thin heat flow sensor having a first and second thermocouple located within o... | 06/08/1982 |
| 4181584 | Method for heating electrolytic cell A method is described for heating an electrolytic cell used for the production of metal, e.g., aluminum, by electrolysis of a molten electrolyte which contains solid electrolyte between adjacent surfaces of the anode and cathode of the cell. In the descri... | 01/01/1980 |
| 4181583 | Method for heating electrolytic cell A method is described for controllably heating an electrolytic cell used for the production of metal, e.g., aluminum, from a compound of the metal, e.g., alumina, to a desired temperature. The method is especially applicable to electrolytic cells which ha... | 01/01/1980 |
| 4146444 | Method for preheating a molten salt electrolysis cell A method is disclosed for preheating a molten salt electrolysis cell having an electrode which includes at least one element protruding into the interior of the cell. The method disclosed includes the distribution of a carbonaceous aggregate around such a... | 03/27/1979 |
| 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 |
| 4133727 | Method for extracting heat from a chamber containing a molten salt A method is disclosed by which heat may be extracted from an electrolysis chamber containing a molten salt bath. The method includes providing the chamber with a portion having a surface bordering directly on a gas space above the molten salt bath. Consti... | 01/09/1979 |
