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| Number | Title | Issue Date |
| 7585455 | Compact micro-porous media degasser A degasser (10) for molten metal with a microporous plate (11). The microporous plate has at least one internal passageway (13) and an interface tube (12) attached to the microporous plate in flow communication with the internal passagewa... | 09/08/2009 |
| 7497987 | Refining method and refining apparatus for chromium-contained molten steel A refining method and apparatus for decarburization refining of chromium containing molten steel in a vessel having a first step of blowing oxygen while the inside of the vessel is at a pressure of between 400 Torr and atmospheric pressure, a second step of blowing ... | 03/03/2009 |
| 7037462 | Overflow transfer furnace and control system for reduced oxide production in a casting furnace An apparatus for transferring molten metal from a melting furnace to a casting furnace is provided. A sensing and control system for the transfer of molten metal from a transfer furnace to a casting furnace is also described. The combination of the transfer apparatu... | 05/02/2006 |
| 6830723 | Apparatus for treating molten metal having a sealed treatment zone An apparatus for treating molten metal includes a treatment vessel for holding molten metal and a removable cover or hood for the vessel. Sealing means are provided between the cover and the vessel to provide a gas tight treatment zone. The sealing means include mat... | 12/14/2004 |
| 6602322 | High temperature metal recovery process An improved method and apparatus for recovering metal values from Electric Arc Furnace dust, particularly zinc and iron values, by mixing EAF dust and carbonaceous fines to form a particulate mixture; heating the mixture at a sufficient temperature and fo... | 08/05/2003 |
| 6331269 | Inert tank for treating oxidizable liquid metal An inert vessel for treating an oxidizable liquid metal includes a vessel body and a lid mounted thereon with bearing surfaces at a junction therebetween, the body and lid each including a metal wall having an inner face coated with a refractory lining. T... | 12/18/2001 |
| 6015528 | Apparatus and process for casting metal matrix composite materials A composite material mixture of free flowing reinforcement particles in a molten metal is solidified at a cooling rate greater than about 15° C. per second between the liquidus and solidus temperatures of the matrix alloy. This high cooling rate imparts ... | 01/18/2000 |
| 5972282 | Straight hearth furnace for titanium refining A cold hearth furnace for refining of selected metals, such as titanium, is described. The furnace includes a melting hearth and a transport hearth arranged linearly. A pair of barriers partially block the flow of molten materials to mix it, allowing impu... | 10/26/1999 |
| 5919283 | Method and apparatus for introducing metal chips into molten metal bath An inert gas bubble-actuated molten metal pump is located between one section of a metal-melting furnace and a second section to pump molten metal from the one section, wherein the molten metal is at a higher temperature, into the second section, wherein ... | 07/06/1999 |
| 5908488 | Magnesium melting furnace and method for melting magnesium The magnesium melting furnace (1) has a plurality of chambers. The material to be melted is fed into a melting chamber (2) through a charging chute (20), one end of which terminates under the surface of the melting bath. The melt is slowly transferred int... | 06/01/1999 |
| 5762682 | Method and apparatus for processing ferrous materials In steel-making, there are conflicting processing requirements at different stages of the process. The method and apparatus of the invention creates different processing conditions at different stages of the process. Molten ferrous material (2) is stirred... | 06/09/1998 |
| 5735935 | Method for use of inert gas bubble-actuated molten metal pump in a well of a metal-melting furnace and the furnace An inert gas bubble-actuated molten metal pump is located in a metal-melting furnace to effect circulation of molten metal throughout the furnace. The inert gas employed to actuate the molten metal pump is captured beneath a heat-resistant and flame-resis... | 04/07/1998 |
| 5688470 | Apparatus for recovery of non-ferrous metals from scrap and dross A process and apparatus are disclosed for recovering a non-ferrous metal, preferably aluminum and aluminum alloys, in molten coherent form from a charge of material to be processed containing the metal. The charge is introduced into a sealable furnace whi... | 11/18/1997 |
| 5674309 | Method and apparatus for controlled turbulent purging of open containers A method and apparatus for purging air from the interior of a container in which purge gas is supplied to the interior of the container from one or more injectors in a turbulent jet flow having a modified Reynolds number Re' of less than 14,000 and the pu... | 10/07/1997 |
| 5656235 | Through airlock for refining furnance An airlock of integral one piece construction for the trough of a refining furnace, the airlock having opposed vertical walls with portions that fit snugly within the trough opposed vertical walls and downwardly angled extensions which, with a top wall th... | 08/12/1997 |
| 5599379 | Apparatus and method for recovering non-ferrous metals from hot dross Method and apparatus for recovering free aluminum from a metal bearing dross containing free aluminum metal and oxides of the metal. Hot dross is collected from a hot dross source into a vessel, and the vessel is placed into a sealable storage container. ... | 02/04/1997 |
| 5543242 | Apparatus for disposing of sodium sulfur cells An apparatus for disposing of a plurality of sodium sulfur cells is disclosed, which comprises: a work-setting pipe unit including a plurality of cell-holding pipes, a work-setting station for setting the cells into the work-setting pipe unit, a heating o... | 08/06/1996 |
| 5523761 | Differential GPS smart antenna device Integrated antenna apparatus for determination of the location of an observer and/or of the time of observation by use of a GPS or a GLONASS or other Satellite Positioning System that uses differential corrections of the pseudorange, the location and/or t... | 06/04/1996 |
| 5514349 | A system for making nonstructured materials A method and system for synthesizing nanocrystalline material. A system includes a chamber, a nonconsumable cathode shielded against chemical reaction by a working gas not including an oxidizing gas, but including an inert gas, a consumable anode vaporiza... | 05/07/1996 |
| 5429341 | Apparatus and capsule for carrying out processes of directed crystallization, especially in cosmic space conditions The present invention refers to an apparatus and a capsule for carrying out processes of directed crystallization, especially in cosmic space conditions. The apparatus comprises a first compartment forming a multizone furnace having an inner surface divid... | 07/04/1995 |
| 5404929 | Casting of high oxygen-affinity metals and their alloys A process for casting high oxygen affinity metals or metal alloys such as titanium through use of an induction furnace while preventing the pick up of contaminating gas by the metals or metal alloys during melting. An inert shielding gas such as nitrogen ... | 04/11/1995 |
| 5344478 | Vortex dispersing nozzle for liquefied cryogenic inert gases used in blanketing of molten metals exposed to ambient air and method Method and apparatus for dispersing cryogenic inert gases over the surface of a bath of molten metal by separating vaporized cryogenic gas from the liquid phase of the gas and introducing the liquid phase and the gaseous phase onto the surface of the molt... | 09/06/1994 |
| 5344123 | Melting and filling device The device has a device body including an inside space having an airtightness able to provide a nonactive gas atmosphere, the inside space having a charging port, a filling port and a melting chamber surrounded by an induction heating coil; a first piston... | 09/06/1994 |
| 5324487 | Vacuum-suction degassing apparatus A melt is stored in a vessel. A lower half of a degassing member is immersed in the melt. The degassing member has a cylindrical form with the lower end closed, and the lower half section is made of a porous material which is permeable to gas and impermea... | 06/28/1994 |
| 5316270 | Device for the charging of materials into a furnace and the preheating of these The device for charging metalliferous materials 7 into a furnace 3 compri a charging tube 1, inside which are arranged supports 8 distributed over an entire non-straight section of this, for example similarly to the stairs of a flight of stairs descendin... | 05/31/1994 |
| 5306472 | Vacuum-suction degassing method and an apparatus therefor A melt is stored in a vessel placed in a decompression vessel. On the bottom of the vessel is arranged a bubble generator made of porous bricks, and bubbles of argon gas are introduced into the melt through this bubble generator. Also a lower half section... | 04/26/1994 |
| 5299724 | Apparatus and process for casting metal matrix composite materials A composite material mixture of free flowing reinforcement particles in a molten metal is solidified at a cooling rate greater than about 15° C. per second between the liquidus and solidus temperatures of the matrix alloy. This high cooling rate imparts ... | 04/05/1994 |
| 5252120 | Method and apparatus for double vacuum production of steel A method and apparatus for producing high quality steel having less than about 1 ppm H, 50 ppm N, 25 ppm O and 0.005 S which includes subjection to vacuum, gas purging, and alternating current heating arcs, followed by shrouded pouring into sealed ingot m... | 10/12/1993 |
| 5247538 | Melting furnace with manipulator for closing crucibles vacuum-tight Apparatus for melting preferably highly reactive metals, such as titanium for example, in a vacuum melting furnace, for example a vacuum arc furnace for the remelting of metals, with one or more melting positions, a melting crucible (5, 28) being provided... | 09/21/1993 |
| 5211744 | Method and means for improving molten metal furnace charging efficiency Utilization of metal chips, especially scrap metal chips, particularly brass and aluminum, by introduction of the metal chips into a pool of molten metal of which they are formed or an alloy thereof, with minimization of fuel cost, heat loss, and minimal ... | 05/18/1993 |
| 5169128 | Molten solder filter An apparatus for filtering a molten solder bath comprises, a housing having an entrance end and an exit end enclosing a chanel means extending from the entrance end to a filter means adjacent the exit end. The channel means being configured for receiving ... | 12/08/1992 |
| 5160531 | Vaccum refining method utilizing induction heater around a ladle in a vacuum container A vacuum refining method for refining a mass of molten metal which is obtained from a steel-making furnace or a steel-making secondary smelting furnace, which method includes the steps of: pouring the molten metal into a ladle; setting the ladle inside an... | 11/03/1992 |
| 5067552 | Shrouding for top pouring of ingots The apparatus includes a generally cylindrical windscreen member attached to the bottom of a ladle with its axis generally vertical and concentric with a tap hole in the bottom of the ladle through which molten metal flows when released by a valve. An ape... | 11/26/1991 |
| 4915362 | Carbon dioxide snow nozzle for metallurgy A carbon dioxide snow nozzle for in particular rendering a molten metal inert. The nozzle comprises a supply pipe supplying liquid carbon dioxide under pressure for connection to a source of liquid carbon dioxide under pressure, a T-shaped element having ... | 04/10/1990 |
| 4894087 | Simplified method and apparatus for treating molten steel This invention relates to a method and apparatus for treating molten metal to lower the oxygen, hydrogen, and, to some extent, the nitrogen content thereof in a manner which is less capital intensive, easier to operate and simpler in construction and oper... | 01/16/1990 |
| 4850575 | Apparatus for manufacturing a sintered body with high density An apparatus for manufacturing a sintered body with high density comprises: a table having an object to be processed laid thereon; a pressure vessel accommodating a heat element heating the object around and a heat-insulating mantle surrounding the heat e... | 07/25/1989 |
| 4848755 | Apparatus for adding liquid alloying ingredient to molten steel A descending stream of molten metal is directed from a ladle into a bath of molten metal in a tundish. Molten alloying ingredient is added to the molten metal, either directly to the descending stream within a shroud, or it is injected into the bath, thro... | 07/18/1989 |
| 4848751 | Lance for discharging liquid nitrogen or liquid argon into a furnace throughout the production of molten metal Liquid argon or nitrogen is poured with a lance into a furnace during the production of molten metal. According to the invention, the lance comprises a double wall in which a hole is respectively located in order to vent the argon or nitrogen gas to reduc... | 07/18/1989 |
| 4819918 | Apparatus for the protection of a liquid against the effects of oxygen from the surroundings The subject matter of the invention is constituted by a method and an apptus for the protection of a liquid in a container against the effects of atmospheric oxygen by the use of a fluid, which is placed as a barrier layer between the liquid to be protec... | 04/11/1989 |
| 4817918 | Apparatus for filtering molten scraps of metal for regeneration The apparatus for filtering scraps of light metal for regeneration thereof comprises an upper vessel having heating means for maintaining the scraps, charged therein for the filtration thereof, at a predetermined temperature so as to melt the same or for ... | 04/04/1989 |
