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| Number | Title | Issue Date |
| 8097206 | Lance duct for vacuum treatment systems For the metallurgical treatment of steel melts, a lance is guided through a guide tube with gland into a reaction chamber, on which a water-cooled connection with a connector flange and a vacuum-sealed housing with a housing flange are located, as well as a compensa... | 01/17/2012 |
| 7140765 | Device and method for discrete and continuous measurement of the temperature of molten metal in a furnace or recepient for its production or treatment A device (10) for continuous measurement of the temperature of molten metal in a furnace or recipient for its production and treatment comprises a heat analysis instrument (14) placed in a lance (12) which blows inert gas and/or high-pressure co... | 11/28/2006 |
| 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 |
| 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 |
| 6602318 | Process and apparatus for cleaning and purifying molten aluminum A process is described for treating molten metal with a particulate treating agent. A melt of a metal, e.g. aluminum, is provided in a treatment vessel such as a ladle and a mixing impeller is positioned substantially below the surface of the molten metal... | 08/05/2003 |
| 6589313 | 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... | 07/08/2003 |
| 6409962 | Powder injector for ladle A powder injector for a ladle of molten metal having an exposed upper level with a given shape. The injector comprises a splash deflector with a cast body of heat resistant material with a downwardly facing lower surface defining an outer periphery and ma... | 06/25/2002 |
| 6245285 | Top injection lance A lance (5) for injecting a feed material, preferably a solid feed material, into a metallurgical vessel, is disclosed. The lance comprises: an inlet (21) for introducing the feed material into the lance; an outlet (23) at a forward end of the lance (5) f... | 06/12/2001 |
| 6171545 | Lance holder with multiple function gripping head The use of oxygen lance tubes 12 for refining in connection with steel production is simplified and configured more safely in that the sealing casing 14 is allocated a slidable pressure piston 15 in which pressure media act on the pressure casing 14 to a ... | 01/09/2001 |
| 6086818 | Device for coupling a blowing lance to a collector A device for coupling a blow lance with a header is disclosed, in which the force required for producing a sealing joint between the header (2) and the lance (4) is exerted by a cooling fluid and/or a blowing fluid. In a preferred embodiment, said cooling... | 07/11/2000 |
| 6022507 | Exchange device for a blowing lance A blowing lance and a coupling head are configured to permit facilitated exchange of the blowing lance as desired. The coupling head includes a receptacle in which an end portion of the blowing lance is receivable. The receptacle includes a tubular attach... | 02/08/2000 |
| 6010658 | Apparatus for desulfurization of iron utilizing two spaced apart lances A desulfurization apparatus which employs first and second separate independently movable spaced apart lances (10, 12), each lance having a single conduit (22) through which the desulfurization materials may flow from feed vessels (40, 42, 44, 46) into th... | 01/04/2000 |
| 5904895 | Apparatus for electric steelmaking A burner/injector for providing a localized impingement flame or multiple flames for scrap heating and melting through use of a fluid fuel and at least one oxygen rich oxidizing gas. The burner/injector includes a liquid-cooled combustor for generating an... | 05/18/1999 |
| 5894009 | Vacuum tight reaction vessel for steel processing with a packing gland A vacuum tight reaction vessel for steel processing has a vessel bottom and a cover that can be placed vacuum-tightly on the vessel bottom. The cover has a packing gland as a vacuum-tight passage. The packing gland includes a packing gland housing fixedly... | 04/13/1999 |
| 5858302 | Apparatus for electric steelmaking A burner/injector for providing a localized impingement flame or multiple flames for scrap heating and melting through use of a fluid fuel and at least one oxygen rich oxidizing gas. The burner/injector includes a liquid-cooled combustor for generating an... | 01/12/1999 |
| 5843368 | Apparatus for electric steelmaking A burner/injector for providing a localized impingement flame or multiple flames for scrap heating and melting through use of a fluid fuel and at least one oxygen rich oxidizing gas. The burner/injector includes a liquid-cooled combustor for generating an... | 12/01/1998 |
| 5788921 | Apparatus for electric steelmaking A burner/injector for providing a localized impingement flame or multiple flames for scrap heating and melting through use of a fluid fuel and at least one oxygen rich oxidizing gas. The burner/injector includes a liquid-cooled combustor for generating an... | 08/04/1998 |
| 5714113 | Apparatus for electric steelmaking A burner/injector for providing a localized impingement flame or multiple flames for scrap heating and melting through use of a fluid fuel and at least one oxygen rich oxidizing gas. The burner/injector includes a liquid-cooled combustor for generating an... | 02/03/1998 |
| 5656236 | Apparatus for gas treatment of molten metals A method of and apparatus for treating molten metal to achieve effective removal of such unwanted inclusions as gases, alkali metals, entrained solids, and the like. The method comprises introducing molten metal into a trough, such as the trough provided ... | 08/12/1997 |
| 5462260 | Device for inserting a lance into a pressurized container, in particular a blast furnace A device is presented for inserting, from a support structure a lance axially through a side opening in a pressurized container, in particular a blast furnace. This device comprises a support bench on which a support carriage can slide. A front elastic su... | 10/31/1995 |
| 5430757 | Method and apparatus for the semi-continuous melting and discharging of ceramic material in an induction melting furnace with sintering crust crucible A method is disclosed for the semi-continuous melting of ceramic material by means of inductive melting in high-frequency and medium-frequency induction melting furnaces whose melting coil surrounds a sintering crust crucible and contains a run-out channe... | 07/04/1995 |
| 5382004 | Tundish slag stopper with sealing rim A slag stopper assembly for use in a tundish vessel includes a chamber for reducing the flow of slag to the tundish drain and a stopper plunger for regulating the flow of liquid metal through the drain. The chamber includes a central opening for receiving... | 01/17/1995 |
| 5360204 | Boom and lance for removing slag from crucible Disclosed is a method of removing slag from a body of molten iron comprising the steps of providing a body of molten iron in a crucible, the body having a layer of slag on the surface thereof, the crucible having a side thereof for removing slag therefrom... | 11/01/1994 |
| 5333842 | Apparatus for supplying media to a blowing lance An apparatus is provided for supplying media to a blowing lance, particularly a blowing lance used in the production of steel by a top blowing process. A vertically movable lance carrier comprises a media connection device having a vertical connection sur... | 08/02/1994 |
| 5320330 | Gas tight lance closure at a cooling chimney hood for steel convertors The invention is directed to a gas tight lance closing device at a cooling chimney hood for steel converters. An opening is provided in the cooling chimney for a jetting lance, which latter can be raised and lowered. The diameter of the opening is dimensi... | 06/14/1994 |
| 5308043 | Top submergable lance The top-submergable injection lance has an elongate conduit which extends between upper and discharge ends and defines a bore, for the supply of reactants, through the conduit and an annular, alloy steel tip at the discharge end. The conduit comprises an ... | 05/03/1994 |
| 5275384 | Drive for automatic lance change devices The present invention relates to drives for an automatic lance-changing devices. In accordance with the present invention, the drive effects the coupling of lances used for supplying media by pressing them against a coupling head which, in turn, is accomp... | 01/04/1994 |
| 5268925 | Method and apparatus for the semi-continuous melting and discharging of ceramic material in an induction melting furnace with singering crust crucible A method is disclosed for the semi-continuous melting of ceramic material by means of inductive melting in high-frequency and medium-frequency induction melting furnaces whose melting coil surrounds a sintering crust crucible and contains a run-out channe... | 12/07/1993 |
| 5217674 | Drive for automatic lance changing devices The invention relates to a drive for an automatic lance-changing device, such as is used in the top-blowing steel-making process. Such a lance-changing device comprises two lance-receiving hooks pivotable about a horizontal axis of rotation, means for the... | 06/08/1993 |
| 5200136 | Arrangement for installing and removing a lance into and from a metallurgical vessel An arrangement for introducing and removing a lance into and out of a tiltable metallurgical vessel has drive means stationarily arranged in the direction of the lance axis and means for pivotal mounting of the drive means. The lance is designed as a guid... | 04/06/1993 |
| 5167904 | Device for the automatic coupling of a blowing-in lance to a manifold A device for automatically coupling a lance for injecting a fluid into a molten metal bath to a manifold for supplying the fluid to the lance includes means for hitching the lance rigidly to a lance-carrying carriage which can be displaced along a slide r... | 12/01/1992 |
| 5131636 | Lance holder for a compact lance The lance holder for an oxygen lance has a substantially increased reliability and safety, since a valve disk slidable against the force of a valve disk spring by insertion of the lance is provided in a retaining body between the slag run back safety devi... | 07/21/1992 |
| 5116027 | Apparatus for controlling teeming streams Apparatus for constraining the flow of molten metal from a tundish to a mould along the inner periphery of a tube mounted between them. A vertically movable stopper rod is seated at its lower end in a nozzle at the entrance to the tube the end being so de... | 05/26/1992 |
| 5062613 | Two speed hoist drive assembly A BOF sublance hoist system including a two speed hoist drive for rapidly moving the sublance through a non-critical distance above the molten metal bath within the BOF and then slowly moving the sublance through a critical spotting distance for enabling ... | 11/05/1991 |
| 5037069 | Automatic lance changing apparatus The invention relates to an automatic coupling for coupling lances used in steel production to a coupling head of a lance carrier, the required materials and cooling liquids being supplied to the lance through the coupling head. Coupling takes place by me... | 08/06/1991 |
| 4989841 | Metal continuously melting and retaining furnace A metal continuously melting and retaining furnace including a retaining chamber which retains therein a molten metal fed from a melting chamber, a ladling chamber from which the molten metal is ladled out, and a treating chamber between the retaining and... | 02/05/1991 |
| 4986847 | Process and apparatus for at least temporarily simultaneously subjecting a molten metal to the action of a gas and fine-grain solid materials In a process for at least temporarily simultaneously subjecting a molten metal (5) in a metallurgical vessel (3) to the action of a gas and fine-grain solid materials, with a water-cooled first lance (17) for supplying the gas, in accordance with the inve... | 01/22/1991 |
| 4893791 | Automatic lance changeover device An automatic lance changeover device is presented wherein a radially guided ring is axially vertically displaceable by two lifting spindle systems provided on each side of the ring and bears pivotable hooks for receiving the lance and for pressing the lat... | 01/16/1990 |
| 4865297 | Apparatus for melting and refining metals This invention relates to a lance/burner apparatus and a method for melting and refining metals. Combustion produced from an oxy-fuel or fuel-air-oxygen flame is used to preheat and melt scrap. Oxygen is introduced through a lance pipe into the molten scr... | 09/12/1989 |
| 4836509 | Support and introduction bench for an elongated rectilinear probe, and probe adapted to same The bench for supporting and introducing an elongated rectilinear probe in a blast furnace comprises probe supporting and guiding means and probe driving means, constituted by a carriage guided according to a translatory movement on rails. The probe is he... | 06/06/1989 |
