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| Number | Title | Issue Date |
| 8012409 | Apparatus for injecting gas into a vessel An apparatus for injecting particulate and/or gaseous material into a metallurgical vessel is disclosed. The apparatus includes a duct through which to inject the material, inner and outer water inflow and outflow passages extending through a wall of the duct and an... | 09/06/2011 |
| 7998400 | Gas supply system for a metallurgical furnace and method for operating this system A gas supply system for a side blowing and/or bottom blowing metallurgical furnace with at least one tuyere which is mounted in the side wall and/or in the bottom of the furnace, wherein gas is conveyed through a line of the gas supply system to the tuyere and throu... | 08/16/2011 |
| 7959852 | Process and device for manufacturing free-flowing metal foam Device for manufacturing a metal foam. The device includes at least two feed pipes for introducing gas. The at least two feed pipes are arranged next to one another. Each of the at least two feed pipes project into a foamable melt. This Abstract is not intended to d... | 06/14/2011 |
| 7704446 | Inducing swirl in a gas flow The present invention relates to an apparatus for injecting gas into a vessel. The apparatus may include a gas flow duct and a central body within a forward end region of the duct. The central body and the gas flow duct form an annular nozzle for the discharge of ga... | 04/27/2010 |
| 7648674 | Device for the in-line treatment of liquid metal by means of gas and filtration A single treatment compartment has a liquid metal inlet and outlet and a connection to a liquid metal-input trough. A treatment gas is injected into the liquid metal arranged in at least one sidewall of a ladles. The liquid metal inlet and outlet have an orifice pos... | 01/19/2010 |
| 7588718 | Apparatus for injecting gas into a vessel An apparatus for injecting gas into a vessel includes a gas flow duct which receives hot gas through a gas inlet structure at a rear end of the duct. The forward end of the duct has an annular duct with an internal cooling water passage. Cooling water supply and ret... | 09/15/2009 |
| 7481964 | Sealed impeller for producing metal foam and system and method therefor A system for producing a metal foam comprises a bath containing a molten metal, a rotating shaft or impeller extending through the base of the bath into, and submerged in the molten metal, and a gas discharge nozzle provided on the submerged end of the shaft. The op... | 01/27/2009 |
| 7481965 | Apparatus for injecting gas into a vessel Apparatus for injecting gas into a vessel including a gas flow duct 31 which receives hot gas through a gas inlet structure 32 at a rear end of the duct. An elongate central structure 33 extends throughout the length of duct 31 and carrie... | 01/27/2009 |
| 7455809 | Material submergence system A gas injection tube includes a first end adapted to connect to a reactive gas source and a second end. A tube base attaches to the second end of the gas injection tube. The gas injection tube includes a passageway and the tube base includes a channel. The passagewa... | 11/25/2008 |
| 7384594 | Method for the pyrometallurgical treatment of metals, metal melts and/or slags and injection device In the metallurgical treatment of metals, metal melts and/or slags in a metallurgical unit or melting vessel, especially in electric arc furnaces, injection devices (1) are used for blowing in or up oxygen-rich gases (6) and/or carbonaceous substances,... | 06/10/2008 |
| 7384593 | Cyclone plug A gas lance made of a fireproof material, having an entry surface and an exit surface, having channels having slit-shaped cross-section, which comprise an entry slit and an exit slit. In order to provide a gas lance in which the gas exits in such a manner that a goo... | 06/10/2008 |
| 7326028 | High flow/dual inducer/high efficiency impeller for liquid applications including molten metal A centrifugal pump has a pump base with inlet inducer openings that receive molten metal into an impeller chamber. An impeller structure in the impeller chamber passes the metal in a radial direction through an outlet inducer opening into a volute passage for discha... | 02/05/2008 |
| 7325968 | Structure for holding either a cylindrical or square shaped container during a mixing operation Apparatus and method for mixing a fluid dispersion disposed in a container having either a cylindrical or a square shape. The apparatus includes a holding structure having a retaining structure connected to a base. The retaining structure prevents lateral movement o... | 02/05/2008 |
| 7276205 | Injection device and process for the injection of a fluid The invention relates to an injection device for the reliable introduction of a fluid into a metallurgical vessel having a refractory lining, the device being removably insertable in the lining; comprising a refractory first body (2) and a refractory second b... | 10/02/2007 |
| 7270781 | System for producing alloy containing rare earth metal The present invention is a manufacturing system for alloys containing rare earth metals which presents oxidation of alloy during production, facilitates thermal history control of the alloy, and efficiently produces alloys of a uniform structure. The manufacturing s... | 09/18/2007 |
| 7198181 | Stopper for reliable gas injection The present invention concerns a mono-block stopper adapted to deliver gas during pouring of molten metal comprising a stopper body having an internal chamber (1) and a gas discharge port (2), a bore (3) connecting the internal chamber (1... | 04/03/2007 |
| 7195662 | Device and process for producing metal foam A device for feeding gas in a melt of foamable metal by means of at least one pipe for producing metal foam. The gas insertion pipe projects inwardly into the melt and at the projecting end has a gas outlet having a cross section of 0.006 to 0.2 mm2 and a... | 03/27/2007 |
| 7132077 | Method and apparatus for containing and ejecting a thixotropic metal slurry A container system including a vessel for holding a thixotropic semi-solid aluminum alloy slurry during its processing as a billet and an ejection system for cleanly discharging the processed thixotropic semi-solid aluminum billet. The crucible is preferably formed ... | 11/07/2006 |
| 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 |
| 6960239 | Process and apparatus for adding particulate solid material to molten metal An apparatus is provided for the treatment of molten metal, e.g. aluminum, with a particulate treatment agent and a gas. This includes a vessel for holding molten metal, a rotary device for breaking up particulate treatment agent and gas within the molten metal and ... | 11/01/2005 |
| 6944930 | Method for manufacturing low-oxygen copper A method for manufacturing a low-oxygen copper wire is provided, in which a dehydrogenating treatment can be performed without requiring a long moving distance of molten copper, and the generation of holes in solidification is suppressed, whereby high quality low-ox... | 09/20/2005 |
| 6928869 | Stick for measuring the level of a molten metal bath A measurement rod for measuring the level of a liquid bath is cooled but is provided with a solid end piece so that the bath cannot solidify in front of the orifice of the measurement gas injected in the bath, for which the pressure is being measured. ... | 08/16/2005 |
| 6902696 | 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... | 06/07/2005 |
| 6903306 | Directional cooling system for vacuum heat treating furnace A furnace for heat treating of metal parts includes a hot zone enclosure defining a hot zone therein. The hot zone enclosure has a side wall, a first end wall, and a second end wall. The side wall has slots formed therethrough and along the length thereof. The heat ... | 06/07/2005 |
| 6893607 | Elevated discharge gas lift bubble pump and furnace for use therewith A metal melting closed furnace which includes a main chamber, a circulation well connected to the main chamber by a communications passageway and a vortex well having a exit outlet for molten metal into the main chamber. A cover is emplaced over the vortex well. An ... | 05/17/2005 |
| 6887424 | Inline degassing apparatus An inline degassing apparatus for removing solid solution gases as well as nonmetallic inclusions from molten metal in a degassing container, to which the molten metal is continuously introduced for degassing operation and from which the degassed molten metal is con... | 05/03/2005 |
| 6872344 | Gas blowing plug and manufacturing method therefor A gas blowing plug and a manufacturing method therefor wherein the gas blowing plug includes a slit-shaped gas passage (22) ranging from the bottom to the top of the plug. The gas passage (22) is continuous or discontinuous in a horizontal cross sectio... | 03/29/2005 |
| 6850551 | Electric heater for molten aluminum An electric heater assembly suitable for heating molten metal, the electric heater assembly having a sleeve comprised of a closed end suitable for immersing in the molten metal. The sleeve is fabricated from a composite material comprised of titanium alloy and havin... | 02/01/2005 |
| 6756566 | Convection heating system for vacuum furnaces A convection heating system includes a hot zone enclosure defining a hot zone and a plurality of gas injection nozzles for injecting a cooling gas into the heat treatment zone of furnace. Each gas injection nozzle may include a flap disposed and pivotally supported ... | 06/29/2004 |
| 6689310 | Molten metal degassing device and impellers therefor A device for dispersing gas into molten metal includes an impeller and a shaft having a first end and a second end. The second end of the shaft is connected to the impeller and the first end is connected to the drive source that rotates the shaft and impe... | 02/10/2004 |
| 6669896 | Purge plug A purge plug adapted to be replaceably attached to the bottom of a lable for purging gas through a heat in the ladle. The purge plug comprises a ceramic body having at least one through gap which extends between the end faces of the body and a casing whic... | 12/30/2003 |
| 6645270 | Method of heating a crucible for molten aluminum A method of heating molten aluminum in a container utilizing gas stirring means.... | 11/11/2003 |
| 6551550 | Gas blowing plug and manufacturing method therefor A gas blowing plug and a manufacturing method therefor wherein the gas blowing plug includes a slit-shaped gas passage (22) ranging from the bottom to the top of the plug. The gas passage (22) is continuous or discontinuous in a horizontal cross section o... | 04/22/2003 |
| 6461404 | Ladle for enhanced steel vacuum decarburization A ladle is equipped with properly positioned side and bottom injectors for enhanced steel decarburization in a vacuum tank degasser. To facilitate the circulation of liquid steel in the tank the bottom injectors are positioned in a common segment in order... | 10/08/2002 |
| 6357264 | Apparatus for melting molten material This apparatus is a furnace for heating molten material which employs oxygen-fuel burner assemblies. Preferably, the assemblies are submerged in the molten material. They are water cooled top down units with burner nozzles being off-set from the supply co... | 03/19/2002 |
| 6284189 | Nozzle for device to inject oxygen and technological gases and relative dimensioning method Nozzle for device to inject oxygen and technological gases used in metallurgical processing of metal melting, the nozzle being suitable to emit a gassy flow at supersonic velocity, the nozzle having a conformation symmetrical to a central axis (x) defined... | 09/04/2001 |
| 6277324 | Apparatus for manufacturing molten pig iron and reduced iron by utilizing a fluidized bed An apparatus and a method for manufacturing molten pig iron by using a fine iron ore are disclosed. Coal is used to produce a reducing gas, and a fine iron ore is used to produce a molten iron and a reduced iron in a simple and efficient manner. The appar... | 08/21/2001 |
| 6254652 | At least three-step molten metal decomposition process cycle Sequential processing of hydrogen rich and hydrogen deficient feeds (14 and 16) in a heat balanced, single molten metal bath (40) to produce both 90+ mole % hydrogen (90) and one or more lower purity vapor streams (140) is disclosed. The molten metal bath... | 07/03/2001 |
| 6231806 | System for the injection of gasses into containers containing metals or fused alloys A system for the injection of gasses into containers containing metals or fused alloys, consisting in a device which indicates the end of the useful life of plugs or refractory parts, intended for the injection of gasses into containers containing metals ... | 05/15/2001 |
| 6068812 | Inert gas bubble-actuated molten metal pump with gas-diffusion grid An inert gas bubble-actuated molten metal pump, for the movement of molten metal in a molten-metal bath, which obviates the necessity of a heatproof and flameproof cover to counteract splashing and spattering at the surface of the molten metal bath above ... | 05/30/2000 |
