| Patents for C22B 21 - Obtaining aluminium (4,001) |
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| 08/04/1992 | US5135565 Introdocing dross and lime flux into furnance, melting, separating upper aluminum layer |
| 08/04/1992 | US5135202 Apparatus for melting down chips |
| 07/28/1992 | CA1305609C Treatment of molten light metals |
| 07/14/1992 | US5130639 Apparatus for particle determination in liquid metals |
| 07/12/1992 | WO1992012268A1 Recovery of aluminium and fluoride values from spent pot lining |
| 07/12/1992 | CA2097809A1 Recovery of aluminium and fluoride values from spent pot lining |
| 07/09/1992 | WO1992008814A3 Jet flow device for injecting gas into molten metal |
| 07/01/1992 | EP0492607A2 Method for separating molten salt particles from molten metal |
| 06/29/1992 | CA2058339A1 Method for separating molten salt particles from molten metal |
| 06/25/1992 | WO1992010595A1 Apparatus and method for treating molten metal |
| 06/23/1992 | CA1304040C Method of controlling the alumina feed into reduction cells for producingaluminium |
| 06/17/1992 | EP0490371A2 Multistage rigid media filter for molten metal |
| 06/17/1992 | CN1017084B Closed vat type furnace for melting aluminium |
| 06/16/1992 | US5122184 Molten salt coalescence in molten aluminum |
| 06/16/1992 | US5122181 Process and apparatus for melting contaminated metalliferrous scrap material |
| 06/14/1992 | CA2057551A1 Multistage rigid media filter for molten metal |
| 06/11/1992 | WO1992009709A1 Apparatus for melting aluminium |
| 06/11/1992 | WO1992009708A1 Slag processing in a rotary arc furnace |
| 06/10/1992 | CN1016971B Method and apparatus for carrying out thermochemical process |
| 06/09/1992 | US5120027 Oxidation and corrosion resistance heating elements |
| 05/29/1992 | WO1992008814A2 Jet flow device for injecting gas into molten metal |
| 05/27/1992 | EP0487379A2 Method of anti-pollution treatment of a used refining catalyst and complete recuperation of the different metal constituents of this catalyst |
| 05/27/1992 | EP0487368A2 Antipolluting treatment of a used refining catalyst and recuperation of metals |
| 05/27/1992 | EP0486759A1 Process and device for subsequent treatment and purification of waste gas originating from a secondary aluminium foundry |
| 05/22/1992 | WO1992009370A1 Process and plant for recovering equipment scrap |
| 05/19/1992 | US5114882 Alumina aggregates as filters |
| 05/19/1992 | US5114472 Multistage rigid media filter for molten metal and method of filtering |
| 05/19/1992 | CA1300897C Method for controlling the density of solidified aluminum |
| 05/17/1992 | CA2055186A1 Melting metal particles and dispersing gas with vaned impeller |
| 05/14/1992 | WO1992007967A1 Recovering clean metal and particulates from metal matrix composites |
| 05/13/1992 | CA2055280A1 Process for antipollution treatment of a spent refining catalyst and total recovery of different metal constituents of said catalyst |
| 05/10/1992 | CA2029680A1 Jet flow device for injecting gas into molten metal |
| 05/05/1992 | US5110427 Recycling of aluminum; electrochemistry |
| 05/05/1992 | US5110352 Method of producing aluminum material for use as electronic material |
| 05/01/1992 | CA2054510A1 Process for antipollution treatment of a spent refining catalyst and recovery of metals |
| 04/28/1992 | CA1299391C Crucible for thermal analysis of aluminium alloys |
| 04/21/1992 | CA1298954C Compound containing ferric ferrous salt and a producing method thereof |
| 04/09/1992 | DE4037511C1 Aluminium@ packaging material recovery - involves toothed pressing rollers and brush rollers between them |
| 04/07/1992 | US5102453 Aluminum dross recovery process |
| 04/02/1992 | WO1992005215A1 Process for recovering metals and coatings from composite materials |
| 04/01/1992 | EP0478103A1 Slag crushing device |
| 03/25/1992 | EP0476534A1 Apparatus for the purification of molten non-ferrous metals, in particular molten aluminium |
| 03/18/1992 | EP0474956A1 Metallic vapor condenser capable of circulating a liquid metal |
| 03/18/1992 | CA2051590A1 Apparatus for purifying nonferrous metal melts, particularly aluminum melts |
| 03/14/1992 | CA2050767A1 Process for the recovery of metals and coating materials from composite materials |
| 03/03/1992 | CA1296531C Chlorination of ores containing alkali or alkaline earth values |
| 02/25/1992 | US5090998 Purification of metal melts with halogen gas generated in an electrolysis cell |
| 02/20/1992 | WO1992002649A1 Liquid metal filter |
| 02/12/1992 | CN1058574A Crystal growth modifier |
| 02/11/1992 | US5087292 Recirculating molten metal in bath, ejecting near gas outlet |
| 02/06/1992 | WO1992001825A1 Decontamination and/or surface treatment of metals |
| 02/04/1992 | US5085999 Method, apparatus, and reactant for removal of paint and epoxies from metallic beverage containers using microorganisms |
| 01/14/1992 | US5080715 Recovering clean metal and particulates from metal matrix composites |
| 01/08/1992 | EP0465055A1 Crystal growth modification |
| 01/07/1992 | WO1992001074A1 Reclamation of metal from scrap |
| 01/07/1992 | CA2086253A1 Reclamation of metal from scrap |
| 12/31/1991 | US5076344 Die-casting process and equipment |
| 12/27/1991 | EP0462218A1 Die-casting process, equipment, and product |
| 12/26/1991 | CA2045306A1 Crystal growth modifier |
| 12/18/1991 | CN1015115B Rotary device, apparatus and method for treating molten metal |
| 12/04/1991 | EP0459303A1 Method for producing aluminum material for use as electronic material |
| 12/04/1991 | CN2089935U 铝熔体精炼装置 Molten aluminum refining unit |
| 12/03/1991 | CA1292624C Vertical shaft furnace for and method of melting aluminum |
| 11/13/1991 | EP0211924B1 Method of controlling the alumina feed into reduction cells for producing aluminium |
| 10/29/1991 | CA1291351C Strengthened graphite-metal threaded connection |
| 10/22/1991 | US5059116 Apparatus and process for removing volatile coatings from scrap metal |
| 10/17/1991 | WO1991015607A1 Rotary melting furnace |
| 10/15/1991 | US5057194 Salt-based melting process |
| 10/08/1991 | US5055037 Heat processing apparatus |
| 10/08/1991 | US5054747 Scrap recovery apparatus |
| 10/02/1991 | EP0448724A1 Melting apparatus of cutting scrap |
| 09/26/1991 | DE4004670C1 Recycling disposable food containers etc. - guides container over cleaning shower and then crushes them into compact pressings |
| 09/25/1991 | EP0240507B1 Chlorination of ores containing alkali or alkaline earth values |
| 09/19/1991 | WO1991014009A1 Recycling of metal matrix composites |
| 09/17/1991 | CA1288942C Apparatus for holding and refining of molten aluminum |
| 08/27/1991 | CA1287974C Filtration apparatus |
| 08/21/1991 | EP0442451A2 Aluminium scrap melting |
| 08/21/1991 | EP0442027A2 Process of material recovery for one-way-packs and arrangement for working of this process |
| 08/14/1991 | EP0441739A1 Method of recycling coated metal waste material by shredding |
| 08/13/1991 | CA2036076A1 Aluminum scrap melting |
| 08/09/1991 | CA2035151A1 Process for the preparation by crushing of scrap comprising metal parts provided with a surface coating |
| 08/06/1991 | CA1287217C Improved metal purification process through fractured crystalisation |
| 07/30/1991 | US5035402 Furnaces |
| 07/16/1991 | US5032171 Reaction of alkali or alkaline metal contaminants with fluorides |
| 07/16/1991 | US5031444 Method and apparatus for the determination of gas concentration in molten metal and metal matrix composites |
| 07/11/1991 | WO1991009978A1 Process for converting dross residues to useful products |
| 07/10/1991 | EP0436465A1 Refining of molten metal |
| 07/09/1991 | US5030482 Filter gasketing |
| 07/09/1991 | US5030273 Furnace-plasma arc torch-supervisory control system for recovery of free aluminum from aluminum dross |
| 07/02/1991 | US5028035 Apparatus for gas treatment of a liquid aluminum bath |
| 07/02/1991 | US5027891 Method for transferring heat between process liquor streams |
| 06/25/1991 | US5026240 Charging device |
| 06/21/1991 | CA2032572A1 Purification of metal melts |
| 06/04/1991 | US5021087 Process and apparatus for treating molten aluminum to add hydrogen gas |
| 06/04/1991 | US5020778 Apparatus for stirring molten metal |
| 05/22/1991 | EP0428478A1 Ceramic Filterbody with indicator for preheating |
| 05/22/1991 | EP0428363A1 Apparatus for holding and refining of molten aluminium |
| 05/16/1991 | WO1991006684A1 Cooling agent for aluminum dross |
| 05/14/1991 | US5015288 Gas-fired aluminum melter having recirculating molten salt bath and process |
| 05/07/1991 | US5013356 Process for the processing of slag from aluminium scrap and waste melting, recovery of components thereof and treatment of gasses generated |