| Patents for C22B 21 - Obtaining aluminium (4,001) |
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| 03/23/1994 | CA2106511A1 Method and apparatus for separation and recovery of the components from foil-containing laminates |
| 03/18/1994 | EP0462218A4 Die-casting process, equipment, and product. |
| 03/15/1994 | US5294245 Melting and mixing metals with impellers |
| 03/15/1994 | US5294244 Heating the air bag in a furnace and removing the nonaluminum parts prior to reaching the melting point of the aluminum |
| 03/15/1994 | CA2042020C Apparatus for melting down chips |
| 03/03/1994 | WO1994004711A1 Charging metal solids into molten metal |
| 03/01/1994 | US5290535 Process for recycling saltcake |
| 02/15/1994 | US5286473 Reacting alkali metal with hydrochloric acid or water, heating formed chloride with aluminum to produce aluminum chloride and reusable alkali metal |
| 02/03/1994 | WO1994002263A1 Treatment of solid material |
| 01/14/1994 | CA2073706A1 Apparatus and process for the refinement of molten metal |
| 01/04/1994 | US5275385 Rotor speed control for an aluminum refining system |
| 12/29/1993 | EP0576416A1 Process for producing aluminium |
| 12/29/1993 | EP0576255A1 Process for recovery of free aluminium from aluminium dross or aluminium scrap using plasma energy with oxygen second stage treatment |
| 12/29/1993 | EP0576254A2 Reactive non-metallic product recovered from dross |
| 12/28/1993 | CA1325520C Apparatus for, and method of, purifying a melt, which, besides one or more impurities, essentially contains a light metal, in particular aluminium |
| 12/23/1993 | WO1993025717A1 Liquid-in liquid sensor and method |
| 12/23/1993 | CA2098776A1 Reactive non-metallic product recovered from dross |
| 12/09/1993 | WO1993024667A1 A method of treating dross materials in metallurgical melting processes |
| 12/09/1993 | CA2136994A1 A method of treating dross materials in metallurgical melting processes |
| 12/07/1993 | US5268020 Circulating fluid, charge entrainment; rotary pumping and vortex generator impellers |
| 12/07/1993 | CA1324977C Process of treating residues from the hydrometallurgical production of zinc |
| 11/12/1993 | CA2071742A1 Melter/holder control system |
| 11/09/1993 | US5259867 Method of treating dross materials in metallurgical melting processes |
| 10/28/1993 | DE4313360A1 Melting aluminium@ alloy scrap - with vortex motion of liq. melt produced by means of a magnetic field generator |
| 10/27/1993 | EP0566867A1 Process and apparatus for the production of low gas and pore free aluminium alloys |
| 10/19/1993 | CA2091857A1 Process and apparatus for manufacturing low-gas and pore-free aluminum casting alloys |
| 09/30/1993 | DE4227568A1 Reclamation of chromium@, PCB and plastics from discarded computers - by direct and indirect heating in a blast furnace with removal and, if necessary destruction of components at different temps. |
| 09/21/1993 | US5246116 Method and apparatus for separation and recovery of the components from foil-containing laminates |
| 09/21/1993 | US5246055 Vacuum die-casting machine with apparatus and method for controlling pressure behind piston |
| 09/14/1993 | US5245627 Use of a radiating arc furnace for treating a dross containing a metal in order to recover this metal |
| 09/14/1993 | US5244488 Direct smelting process with a thermal plasma |
| 09/08/1993 | EP0558510A1 Slag processing in a rotary arc furnace. |
| 09/07/1993 | US5242486 Carbonaceous material and one of obsidian, perlite, pumice or vermiculite |
| 09/07/1993 | US5242155 Melter/holder control system |
| 08/26/1993 | WO1993017135A1 Recovery of non-ferrous metals from dross |
| 08/25/1993 | EP0556343A1 Jet flow device for injecting gas into molten metal. |
| 08/10/1993 | US5234202 Gas dispersion apparatus for molten aluminum refining |
| 08/05/1993 | DE4230318A1 Recovering valuable material from waste solid rocket fuel - by removing fuel from rocket housing by wet decomposition process followed by high-velocity underwater maceration process |
| 08/04/1993 | CN1021742C Two-stage aluminium refining vessel |
| 08/03/1993 | US5232489 Process for the recovery of metals and coating materials from composite materials |
| 07/20/1993 | CA2030727C Rotary arc furnace for treating aluminum dross |
| 07/13/1993 | US5227143 Process for the removal of salts from aluminum dross |
| 07/13/1993 | US5226950 Liquid-in-liquid sensor and method |
| 07/06/1993 | US5224984 Process for treatment and purification of waste gases from a secondary aluminum melting plant |
| 06/23/1993 | CN1073486A Slag remover for refining Al or Al alloy |
| 05/18/1993 | US5211922 Process for the recovery of values from secondary aluminum dross |
| 05/18/1993 | US5211744 Method and means for improving molten metal furnace charging efficiency |
| 05/12/1993 | EP0540562A1 Decontamination and/or surface treatment of metals. |
| 04/28/1993 | EP0538278A1 Reclamation of metal from scrap. |
| 04/27/1993 | CA1316839C Hot filter media |
| 04/20/1993 | US5203908 Process for recovery of free aluminum from aluminum dross or aluminum scrap using plasma energy at high enthalpy |
| 04/07/1993 | CN1070691A Recovery of metal values from aqueous solutions |
| 04/06/1993 | CA1315545C Apparatus for treating molten metal |
| 04/01/1993 | WO1993006254A1 Process for the removal of salts from aluminum dross |
| 04/01/1993 | WO1993006253A1 Metal processing or recovery |
| 04/01/1993 | CA2120024A1 Process for the removal of salts from aluminum dross |
| 04/01/1993 | CA2118942A1 Metal processing or recovery |
| 03/31/1993 | CN1070428A Method and equipment for refining aluminium melt |
| 03/30/1993 | US5198200 Process for the recovery of values from secondary aluminum dross |
| 03/30/1993 | US5198180 Gas dispersion apparatus with rotor and stator for molten aluminum refining |
| 03/30/1993 | CA1315104C Apparatus for degassing molten metal |
| 03/30/1993 | CA1315098C Furnaces |
| 03/27/1993 | CA2079118A1 Impeller for treating molten metals |
| 03/24/1993 | CN2128727Y Pneumatic feeder apparatus for refining agent |
| 03/17/1993 | EP0532222A1 Metal processing or recovery |
| 03/09/1993 | US5192359 Electromagnetic wave treatment of slags for aluminum separation |
| 03/09/1993 | CA1314144C Apparatus for the on-line treatment of degassing and filtration of aluminum and its alloys |
| 02/23/1993 | US5188795 Battery recycling, reduced heat loss |
| 02/17/1993 | EP0527644A1 Potassium fertilizer from aluminum reclamation by-products |
| 02/16/1993 | US5186622 Circulating heated air of reduced oxygen to volatilize coating from aluminum scrap |
| 01/20/1993 | EP0523858A1 Heat processing apparatus |
| 01/07/1993 | WO1993000450A1 Heat processing apparatus |
| 01/07/1993 | EP0521519A2 Method and device for analysis adjustment of reactive melts |
| 01/06/1993 | CA2073128A1 Method for making mixtures of reactive melts and apparatus for use therein |
| 12/30/1992 | EP0520600A1 Ceramic filter for molten metal |
| 12/08/1992 | US5169542 Foams containing graphite, wollastonite, silica and alkali phosphate glass for accurate cutting, recycling, efficiency |
| 12/08/1992 | CA1311121C Rotary device, apparatus and method for treating molten metal |
| 11/26/1992 | DE4217081A1 Recovering plated metal from steel scrap - by vaporising organic material prior to vaporising plated metal |
| 11/24/1992 | CA1310498C Process for recovery of free aluminum from aluminum dross or aluminum scrap using plasma energy |
| 11/24/1992 | CA1310492C Auxiliary flue for furnaces |
| 11/17/1992 | US5164146 Foundry furnace having outlet flow passage |
| 11/11/1992 | CN1066088A Improved heater arrangement for aluminum refining systems |
| 11/03/1992 | US5160693 Impeller for treating molten metals |
| 10/28/1992 | EP0510701A2 Improved heater arrangement for aluminum refining systems |
| 10/27/1992 | US5158737 Apparatus for refining molten aluminum |
| 10/07/1992 | EP0507463A2 Filters for light metals |
| 10/06/1992 | US5152893 Ceramic filter for molten metal |
| 10/06/1992 | CA2064617A1 Filters for light metals |
| 10/06/1992 | CA1308263C Method of preparing high-purity metal and rotary cooling member for use in apparatus therefor |
| 09/22/1992 | US5148997 Slag crushing device |
| 09/15/1992 | US5147546 Ceramic foam filter body having a gasket chemically and mechanically bonded thereto |
| 09/09/1992 | CN1064318A Improved gas dispersion apparatus for molten aluminum refining |
| 09/08/1992 | US5145806 Aggregate particles, binder |
| 09/08/1992 | US5145514 Treating aluminium with chlorine |
| 09/02/1992 | EP0500837A1 Process for recovering metals and coatings from composite materials |
| 09/01/1992 | US5143357 Melting metal particles and dispersing gas with vaned impeller |
| 08/26/1992 | EP0500052A2 Improved gas dispersion apparatus for molten aluminum refining |
| 08/26/1992 | EP0499779A1 Method for treatment of waste materials |
| 08/18/1992 | US5139203 Method and device for recovery of scrap goods |
| 08/12/1992 | EP0497975A1 Cooling agent for aluminum dross |