| Patents for C22B 21 - Obtaining aluminium (4,001) |
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| 12/23/1987 | EP0250342A1 Process for recovering aluminium and lithium from metallic scrap |
| 12/16/1987 | EP0248994A1 Process for degassing and refining light-metal melts |
| 12/09/1987 | EP0248459A1 Method and apparatus for purifying a light metal melt, in particular aluminium |
| 11/25/1987 | EP0246564A1 Strengthened graphite-metal threaded connection |
| 11/25/1987 | CN86103277A Method for removing iron and titanium impurities and refining eutectic aluminium-silicon alloy |
| 11/19/1987 | EP0245601A2 Apparatus for treating molten metal |
| 11/04/1987 | EP0243384A1 Device for filtering molten metals. |
| 11/03/1987 | US4704162 Using linear induction motor |
| 10/21/1987 | EP0241668A1 Process for recovering the scraps deriving from the machining of aluminum and its alloys,with production of extruded semifinished articles |
| 10/14/1987 | EP0241149A2 Value recovery from spent alumina-base catalysts |
| 10/13/1987 | US4699770 Iron-free by differential chlorination, calcining to dehydrate |
| 10/07/1987 | EP0240442A1 Crucible for the thermal analysis of an aluminium alloy |
| 10/06/1987 | US4697792 Melting furnace |
| 10/06/1987 | CA1227642A1 Process and device for feeding metal into a molten metal bath |
| 10/01/1987 | DE3610512A1 Process for optimising the reaction of hexachloroethane for the degassing of molten aluminium and of aluminium alloys and also the distribution of crystallisation nuclei in them |
| 10/01/1987 | DE3610503A1 Metallurgical product for treating aluminium melts |
| 09/30/1987 | EP0239305A1 Filter device and method |
| 09/30/1987 | EP0238884A1 Improved apparatus for holding and refining of molten aluminum |
| 09/30/1987 | EP0238607A1 Filtration of aluminium-lithium alloys |
| 09/29/1987 | CA1227337A1 Liquefied aluminum recuperation method and device, through compression of hot dross |
| 09/24/1987 | WO1987005636A1 Method for refining aluminium-silicon alloy of eutectic composition from admixtures of iron and titanium |
| 09/22/1987 | US4695319 Metal distillation method utilizing double vaporization |
| 09/15/1987 | CA1226738A1 Metal scrap reclamation system |
| 09/09/1987 | EP0236238A1 Process for purifying metals by fractional crystallization |
| 09/08/1987 | US4691900 Metal melting furnace |
| 09/03/1987 | DE3630711C1 Process for degassing and refining molten aluminium and alloys thereof |
| 09/02/1987 | EP0138929B1 Method and device for the recovery of liquid aluminum by compression of hot slag |
| 09/01/1987 | US4690763 For molten metals |
| 08/12/1987 | EP0232221A1 Process and installation for the preparation of finely divided aluminium scrap |
| 08/11/1987 | US4685822 Strengthened graphite-metal threaded connection |
| 08/11/1987 | US4685657 Melting furnace |
| 07/28/1987 | CA1224742A1 Method and apparatus for separating a lid from a container |
| 07/22/1987 | CN87100033A Improvement technique of metal purification with fractional crystallization process |
| 07/21/1987 | US4681626 Method of refining aluminum |
| 07/21/1987 | US4681535 Preheating mechanism for source metal for melt |
| 07/21/1987 | CA1224338A1 Method and system for melting a charge of bulk solid metal |
| 07/07/1987 | CA1223743A1 Method of filtering molten metal |
| 07/02/1987 | DE3641957C1 Burner and cover arrangement for furnaces for keeping hot and/or melting metals |
| 06/30/1987 | US4676742 Preheater for reverberatory melting furnaces |
| 06/24/1987 | EP0225935A1 Method of treating molten aluminum by removing hydrogen gas and nonmetallic inclusions therefrom |
| 06/16/1987 | US4673434 Using a rotary device for treating molten metal |
| 06/10/1987 | EP0224499A1 Method for degasing a melting material and device for implementins such method |
| 06/03/1987 | EP0224343A1 Dross cooling |
| 06/02/1987 | US4670050 Method of treating molten aluminum by removing hydrogen gas and nonmetallic inclusions therefrom |
| 05/27/1987 | EP0223722A1 Device and process for the low-pressure injection of pulverulent additives into a stream of molten metal |
| 05/27/1987 | EP0223493A2 Production of a purified alumina-silica product and substantially pure aluminum chloride from bauxites, bauxitic clays, kaolinitic clays and mixtures thereof |
| 05/26/1987 | US4668351 Method of producing aluminum |
| 05/13/1987 | EP0221760A2 Method for recovering metal values from mixed-metal aqueous solutions by selective phosphate precipitation |
| 05/12/1987 | US4664702 Method of melting aluminum in a vertical shaft furnace |
| 05/07/1987 | WO1987002596A1 Device for filtering molten metals |
| 04/29/1987 | CN86107248A Filtration apparatus |
| 04/22/1987 | EP0219381A1 Process for the preparation of aluminium chloride by carbochlorination of aluminous materials |
| 04/14/1987 | US4657745 Value recovery from spent alumina-base catalyst |
| 04/14/1987 | CA1220351A1 Melting scrap metal and ingestion of solids in molten metal |
| 04/14/1987 | CA1220347A1 Recovery of aluminium scrap |
| 04/14/1987 | CA1220346A1 Continuous method for reclaiming, melting and casting aluminum scrap |
| 04/09/1987 | WO1987002124A1 Melting and holding furnace |
| 04/09/1987 | WO1987002069A1 Filtration of aluminium-lithium alloys |
| 04/07/1987 | CA1220025A1 Molten metal stirring equipment |
| 04/01/1987 | EP0216393A1 Process for treating molten aluminum to remove hydrogen gas and non-metallic inclusions therefrom |
| 03/31/1987 | US4654088 Decoating of aluminum scrap |
| 03/24/1987 | US4652434 Chlorination of ores containing alkali or alkaline earth values |
| 03/24/1987 | US4652299 Process for treating metals and alloys for the purpose of refining them |
| 03/04/1987 | EP0213116A2 Smelt furnace |
| 03/04/1987 | EP0212371A2 Method and apparatus for determining soluble gas content |
| 03/04/1987 | EP0211924A1 Method of controlling the alumina feed into reduction cells for producing aluminium. |
| 02/25/1987 | EP0211167A1 Aluminium vacuum furnace |
| 02/17/1987 | US4643806 Electrocatalytic energy conversion and chemicals production |
| 02/12/1987 | WO1987000826A1 Chlorination of ores containing alkali or alkaline earth values |
| 02/03/1987 | US4640497 Filtration apparatus |
| 01/06/1987 | US4635273 Method and apparatus for the thermal production of metal carbides and metals |
| 01/06/1987 | US4634105 Rotary device for treating molten metal |
| 12/30/1986 | EP0205502A1 Process for treatment of aluminium melts |
| 12/30/1986 | CA1215844A1 Method and apparatus for digesting gibbsitic bauxite in a counter-current regenerative system |
| 12/16/1986 | CA1215237A1 Removal of alkali metals and alkaline earth metals from molten aluminium |
| 12/16/1986 | CA1215236A1 Removal of impurities from molten aluminium |
| 12/04/1986 | WO1986007097A1 Metal halide reduction with molten sodium/potassium alloy |
| 11/20/1986 | WO1986006749A1 Method for degasing a melting material and device for implementins such method |
| 10/21/1986 | US4618427 Method of treating and breaking up a liquid with the help of centripetal force |
| 10/14/1986 | US4616996 Non-oxidizing atmosphere firing furnace for ceramic articles |
| 10/07/1986 | CA1212241A1 Process for carbothermic reduction of alumina |
| 09/16/1986 | US4611790 Device for releasing and diffusing bubbles into liquid |
| 09/16/1986 | CA1211291A1 Method of segregating metallic components |
| 08/28/1986 | WO1986005008A1 Method of controlling the alumina feed into reduction cells for producing aluminium |
| 08/27/1986 | CN86101325A Vertical shaft furnace for and method of melting aluminum |
| 08/26/1986 | US4607825 Ladle for the chlorination of aluminium alloys, for removing magnesium |
| 08/05/1986 | CA1208903A1 Filter medium in the form of a stable porous body |
| 07/22/1986 | US4601750 Scrap melting system |
| 07/16/1986 | EP0187194A2 Metal distillation method and apparatus utilizing double vaporization |
| 07/08/1986 | US4598899 Light gauge metal scrap melting system |
| 07/03/1986 | WO1986003785A1 Process for treatment of aluminium melts |
| 06/11/1986 | CN85201157U Aluminium directional solidifying and purifying equipment |
| 06/04/1986 | EP0183402A2 Rotary device, apparatus and method for treating molten metal |
| 06/03/1986 | US4592511 Method of segregating metallic components and removing fines therefrom |
| 05/27/1986 | US4591383 Apparatus and method of filtering molten metal using honeycomb structure of sintered alumina as filter element |
| 05/22/1986 | WO1986002949A1 Method for the treatment of metals and alloys for the refining thereof |
| 05/20/1986 | US4589915 Removing slag |
| 05/20/1986 | US4589637 Apparatus for melting scrap metal and ingestion of solids in molten metal |
| 05/14/1986 | EP0181227A1 Treating aluminium with chlorine |
| 05/13/1986 | US4588438 Moulded object of alumina matter-containing raw material for aluminum smelting by blast furnace method |