| Patents for C22B 21 - Obtaining aluminium (4,001) |
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| 02/28/2001 | EP0865509B1 Production of metal such as aluminium, magnesium, silicon and the like from metal oxide compounds |
| 02/27/2001 | US6193944 Digesting spent potliner material in acid digester to produce a gas and hydrogen cyanide gas and water; removing gas; heating recovered silicon tetrafluoride gas to form fumed silica and hydrogen fluoride; recovering fumed silica |
| 02/27/2001 | US6193780 Process and apparatus for the recovery of aluminum and energy from used aluminum-plastic packages |
| 02/22/2001 | WO2001012544A1 Production of fumed silica |
| 02/22/2001 | CA2381389A1 Production of fumed silica |
| 02/20/2001 | US6190626 Detoxifying spent aluminum potliners |
| 02/20/2001 | CA2178864C Aluminum melting with reduced dross formation |
| 02/15/2001 | WO2001010584A1 Distributor device for use in metal casting |
| 02/13/2001 | US6187275 Digesting spent potliner using acid to form gaseous hydrogen fluoride which is converted to hydrofluoric acid and reacted with alumina trihydrate to form aluminum trifluoride |
| 02/07/2001 | CN1061693C Method and device for extracting liquid light metal from dispersed mixture |
| 01/31/2001 | CN1282287A Method of removing metallic coating layer from scrap metal pieces |
| 01/30/2001 | US6179899 Preparation of fine aluminum powders by solution methods |
| 01/25/2001 | WO2001006023A1 Method and system of protecting easily oxidized metals melts like molten magnesium by 'in situ' generation of boron trifluoride gas |
| 01/24/2001 | EP1070149A1 Metal scrap submergence system for scrap charging/melting well of furnace |
| 01/24/2001 | EP0946769B1 Dross press with rocking press head |
| 01/17/2001 | EP1027465A4 Method and apparatus for removing liquid salts from liquid metal |
| 01/09/2001 | US6171362 Method for refining molten aluminum alloy and flux for refining molten aluminum alloy |
| 12/20/2000 | EP1060278A1 Method for production of aluminium |
| 12/20/2000 | EP1060126A1 Recovery of products from non-metallic products derived from aluminum dross |
| 12/19/2000 | US6162279 For aluminum; protective coating on shaft |
| 12/12/2000 | US6159269 Furnace having refractory walls which can store/accumulate heat from the oxidation of a dross charge to provide heat conduction to the next dross charge; injecting oxygen after tapping of the metal to burn unrecoverable metal |
| 12/07/2000 | WO2000073522A1 Aluminium alloy sheet |
| 12/07/2000 | WO2000073240A1 Silicon nitride materials and components made therefrom for processing molten light metal masses |
| 12/07/2000 | DE19924896A1 Siliciumnitrid-Werkstoffe und daraus hergestellte Bauteile für die Verarbeitung von Leichtmetallschmelzen Silicon nitride materials and devices made therefrom for the processing of light metal melts |
| 12/06/2000 | CN1275628A Aluminium alloy covering slag-cleaning agent |
| 12/05/2000 | US6156095 Immersing cold body in molten aluminum; crystallization on exterior surface by rotation and centrifugal acceleration; bubbling gas |
| 12/05/2000 | US6156092 Immersing cold body in molten aluminum; crystallization on exterior surface by rotation and centrifugal acceleration; bubbling gas |
| 11/21/2000 | US6149710 Additive for adding one or more metals into aluminium alloys |
| 11/14/2000 | US6146443 Pre-treated carbon based composite material for molten metal |
| 11/07/2000 | US6143055 Improved shaft suitable for use in the treatment of molten aluminum including pumping or fluxing employing an impeller, the shaft comprised of a carbon or graphite having an exterior surface covered by refractory layer |
| 11/07/2000 | CA2176136C Compact molten metal processing ladle |
| 11/02/2000 | WO2000065110A1 Removal of impurities from molten masses of metals or alloys using low melting point aluminum trichloride containing salt mixtures |
| 11/02/2000 | WO2000065109A1 Improved method and device for degasing and separation of inclusions in a liquid metal bath by injection of gas bubbles |
| 11/02/2000 | WO2000064809A1 Method of recovering fumed silica from spent potliner |
| 11/02/2000 | DE19918766A1 Verfahren zur Entfernung von Verunreinigungen aus Schmelzen von Metallen oder Legierungen A process for removing impurities from melts of metals or alloys |
| 11/02/2000 | CA2372065A1 Improved method and device for degasing and separation of inclusions in a liquid metal bath by injection of gas bubbles |
| 11/02/2000 | CA2371248A1 Method of recovering fumed silica from spent potliner |
| 10/31/2000 | US6139654 Strontium master alloy composition having a reduced solidus temperature and method of manufacturing the same |
| 10/26/2000 | WO2000063630A1 Protection coating of wear-exposed components used for refining molten metal |
| 10/26/2000 | CA2369431A1 Protection coating of wear-exposed components used for refining molten metal |
| 10/24/2000 | US6136264 Melting apparatus and method for melting metal |
| 10/24/2000 | US6136263 Dross press with rocking press head |
| 10/24/2000 | US6136108 Providing a molten metal bath containing zinc and 0.01-2.0% each of a material selected from the group consisting of aluminum, copper and mixture, adding strontium to the molten bath, thereby reducing losses due to oxidation |
| 10/24/2000 | US6136064 Supplying metal chips to charging tube, forming a column within tube extending through a box-shaped structure into a pool of molten metal; as chips at bottom of column melt, more are added to top, forcing bottom chips into molten metal |
| 10/18/2000 | EP1045040A1 Additive for adding one or more metals into aluminium alloys |
| 10/18/2000 | EP1044164A1 Improvements relating to the bayer process |
| 10/11/2000 | EP1042519A1 Injector for gas treatment of molten metals |
| 10/05/2000 | WO2000058528A1 Method of treating spent potliner material from aluminum reduction cells |
| 10/04/2000 | EP1039985A1 Method of removing a metallic coating layer from scrap metal pieces |
| 09/28/2000 | WO2000057193A2 Measuring and controlling the flow of flowable materials |
| 09/28/2000 | WO2000057139A1 Measuring and controlling the flow of flowable materials |
| 09/26/2000 | US6123908 Method of treating spent potliner material from aluminum reduction cells |
| 09/26/2000 | US6123523 Gas-dispersion device |
| 09/19/2000 | CA2014180C Liquid treatment installation using a gas, and process for the same |
| 09/05/2000 | US6113670 Twin chamber combustion furnace |
| 08/31/2000 | DE19906939A1 Verfahren und Vorrichtung zum Herstellen von Gußteilen aus Aluminium- und Magnesiumlegierungen Method and device for producing castings from aluminum and magnesium alloys |
| 08/30/2000 | EP1031634A1 Separation refining of metal melts by addition of metal hydrides, especially MgH2 |
| 08/29/2000 | US6110434 Recovering magnesium aluminum spinel and nonmetal product from aluminum dross, digestion and filtration |
| 08/24/2000 | WO2000048770A1 Method and device for producing cast parts consisting of aluminium and magnesium alloys |
| 08/24/2000 | CA2298874A1 Process for separating molten metals |
| 08/17/2000 | WO2000047783A1 Aluminium shapes as deoxidants for steelmaking |
| 08/16/2000 | EP1027465A1 Method and apparatus for removing liquid salts from liquid metal |
| 08/16/2000 | CN1263566A Method of manufacturing aluminum alloy for flattening material and aluminum alloy flattening material for automobiles |
| 08/08/2000 | US6100487 Chemical treatment of aluminum alloys to enable alloy separation |
| 08/08/2000 | CA2157252C Multiple impellers with respective feeds for fluxing molten metal |
| 08/03/2000 | WO2000044948A1 Aluminum scrap melting process and system |
| 08/03/2000 | DE19903011A1 Separation and disposal of sandy fraction in processing bauxite involves removing aqueous sodium hydroxide solution from hot mixture in hydrocyclone and separating sand, red mud and residual solution on screen |
| 08/02/2000 | EP1024206A1 Apparatus and method for recovering metal from dross |
| 08/01/2000 | US6096260 Cooling system for dross pressing head using sand |
| 07/13/2000 | WO2000040768A1 Method and device for purifying aluminium by segregation |
| 07/13/2000 | WO2000040767A1 Carbothermic aluminium production using scrap aluminium as coolant |
| 07/11/2000 | US6086655 Reactor chamber where the oxide or other metal compounds are subject to an intense agitation and vibrations thus generating heat in the material. |
| 07/06/2000 | DE19963298A1 Cleaning and refining process for molten aluminum alloys uses alum as cleaning fluxing agent |
| 07/05/2000 | EP1015385A1 Treatment of aluminum dross |
| 07/05/2000 | EP1015210A1 Method for processing material comprising aluminium and plastic |
| 07/05/2000 | EP1015119A1 Metal recovery from salt cake and other compositions |
| 07/04/2000 | US6082641 Dross processing |
| 06/29/2000 | WO2000037692A1 Improved method for filtering a metal liquid on a bed of refractory particulate material |
| 06/29/2000 | WO2000037691A1 Method and apparatus for the production of aluminium from alumina ore by aluminiumsulfide process |
| 06/29/2000 | CA2356372A1 Improved method for filtering a metal liquid on a bed of refractory particulate material |
| 06/22/2000 | WO2000035809A1 Method for producing molten salts with an extruder and use of the molten salts |
| 06/22/2000 | CA2355174A1 Process for the preparation of salt melts using an extruder, and the use thereof |
| 06/21/2000 | DE19857788A1 Verfahren zur Herstellugn von Salzschmelzen mit einem Extruder und deren Verwendung Method for Herstellugn of salt melts with an extruder and their use |
| 06/20/2000 | US6077329 Adding solution of alane-amine adduct dissolved in organic solvent to catalyst-containing solution heated to reaction temperature to decompose alane into aluminum powder |
| 06/20/2000 | US6077328 Process for reducing the dioxin and furan content in waste gases from furnaces, and use of the filter dusts produced thereby |
| 06/13/2000 | US6074455 Aluminum scrap melting process and apparatus |
| 06/02/2000 | WO2000031482A1 Improved apparatus and process for separating aluminium from a mixture of aluminium and aluminium dross |
| 06/02/2000 | CA2351353A1 Improved apparatus and process for separating aluminium from a mixture of aluminium and aluminium dross |
| 05/31/2000 | EP1004682A1 Monolithic ceramic gas diffuser for injecting gas into a molten metal bath |
| 05/24/2000 | CN1052759C Fast quench reactor and method |
| 05/24/2000 | CA2290270A1 Monolithic ceramic gas diffuser for injecting gas into a molten metal bath |
| 05/23/2000 | US6066289 Baffle heater is comprised of a silicon refractory inert to the molten metal (especially aluminum), the member containing at least one electrical heating element receptacle. |
| 05/20/2000 | CA2259565A1 Anode improvements and a process for the manufacture and production of aluminum |
| 05/18/2000 | WO2000028219A1 Shaft and post assemblies for molten metal pumping apparatus |
| 05/16/2000 | US6063330 Press head and dross pot for dross processing system |
| 05/10/2000 | EP0998588A1 Inert tank for treating oxidable liquid metal |
| 05/10/2000 | EP0946850B1 Melting apparatus and method for melting metal |
| 05/09/2000 | US6060014 Gas dispersion apparatus for molten aluminum refining |
| 05/09/2000 | US6060013 Rotary gas dispersion device for treating a liquid aluminium bath |
| 05/04/2000 | WO2000025078A1 Melting/retaining furnace for aluminum ingot |