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| Number | Title | Issue Date |
| 8080200 | Pulverized coal injection lance The present invention proposes a pulverized coal injection lance (10) for feeding pulverized coal from a rear end of the lance (10) to a front end (11) of the lance (10). The lance (10) comprises an outer pipe (12) for conve... | 12/20/2011 |
| 8017068 | Inducing swirl in a gas flow An apparatus for injecting gas into a metallurgical vessel supporting a metallurgical process is disclosed. The apparatus includes a gas flow duct, an elongate central structure extending within the gas flow duct, and a plurality of flow directing swirl vanes dispos... | 09/13/2011 |
| 8003044 | Apparatus for injecting solid particulate material into a vessel A metallurgical lance (27a) to extend through an opening in the wall of a smelting vessel barrel (16) and into the interior space of the vessel. Lance (27a) includes a central core tube (31) through which to pass solid parti... | 08/23/2011 |
| 7776254 | Lance for receiving sensor or sampler for metal melts A lance has a top part and a bottom part for arrangement on the sensor or sampler. The top and bottom parts are detachably connected to each other by a plug-in coupling. The plug-in coupling has two coupling parts, one arranged on the top part and the other arranged... | 08/17/2010 |
| 7722800 | Apparatus for injecting solid particulate material into a vessel A smelting apparatus includes a vessel and a solids injection lance extending through an opening in the wall of a vessel barrel into the interior space of the vessel. The lance includes a central core tube through which to pass solid particulate material into the ve... | 05/25/2010 |
| 7563405 | System of gas and/or gas and powders injection in liquid metals through rotary refractory lance This invention has the function of injecting gas and/or gas and powders into liquid metals using a refractory lance that is endowed with circular movement around its axis, using low values of pressure and sewage, which provides a better distribution and lower consum... | 07/21/2009 |
| 7550108 | Metallurgical vessel Metallurgical vessel for iron and steel making including a bottom portion, a sidewall and a lance arrangement of at least two lances for supplying oxygen containing gas to the interior of the vessel in operation. Each lance includes an end portion for emitting oxyge... | 06/23/2009 |
| 7494615 | Supplying solid feed materials for a direct smelting process A direct smelting plant that includes an effective and reliable solids feed means for injecting solid feed materials, particularly carbonaceous material, into a direct smelting vessel of the plant is disclosed. The solid feed means is characterised by independent su... | 02/24/2009 |
| 7455810 | Metallurgical reactor for the production of cast iron Metallurgical reactor for the production of cast iron, consisting of a metal casing internally lined, at least partially, with refractory material and provided, in the region of the top closure, with a duct through which high-temperature ferrous material is introduc... | 11/25/2008 |
| 7445747 | Apparatus for injecting solid particulate material into a vessel Smelting apparatus comprises a vessel (11) and a solids injection lance (27a) extending through an opening in the wall of vessel barrel (16) into the interior space of the vessel. Lance (27a) includes a central core tube ( | 11/04/2008 |
| 7438848 | Metallurgical lance A metallurgical lance for introducing gas into a volume of molten material in a furnace includes a head having a bore extending therethrough, a mounting assembly at the head in the bore, and a nozzle detachably secured to the mounting assembly by a connection, the n... | 10/21/2008 |
| 7402275 | Powder body melting burner A powder body melting burner which injects a powder body, fuel and oxygen into a furnace individually from a burner head and melts the powder body in flames in which the fuel is burned under oxygen support. The burner includes a single powder body injection hole pro... | 07/22/2008 |
| 7402274 | Metal making lance slag detection system A fully automated system and method for rapidly and reliably detecting the ingestion of slag within the tip of a metal making lance. The system utilizes a temperature sensor disposed adjacent to the inner surface of the inner wall of a metal making lance tip. The se... | 07/22/2008 |
| 7396503 | Lance for injecting particulate material into liquid metal A metallurgical lance for injecting particulate material into a liquid comprises a main gas tube 6 defining an axial main gas passage terminating at its outlet and in a first Laval nozzle 38 downstream of the throat of said nozzle. A shrouding gas pass... | 07/08/2008 |
| 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 |
| 7115227 | Heat pipe A heat pipe assembly (10/110), under vacuum and having a working substance charged therein, comprising generally an evaporator (12/112) adapted to evaporate the working fluid and a condenser (16/116). The heat exchanging condenser is in fluid fl... | 10/03/2006 |
| 6989126 | Supplying solid feed materials for a direct smelting process A process and apparatus for supplying solid feed materials for a direct smelting process to solids injection lances of a direct smelting vessel is disclosed. The feed materials supply apparatus includes a supply line (L) for conveying iron-containing material and so... | 01/24/2006 |
| 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 |
| 6939391 | Direct smelting process and apparatus A molten bath-based direct smelting process for producing ferrous metal from a ferrous feed material is disclosed. The process is characterised by injecting pro-heated air downwardly into metallurgical vessel at an angle of 20 to 90° C. relative to a horizontal axi... | 09/06/2005 |
| 6910431 | Burner-lance and combustion method for heating surfaces susceptible to oxidation or reduction A method of heating a surface susceptible to oxidation or reduction includes generating a central, generally cylindrical, fuel-rich particulate jet, and a coaxial, annular, supersonic velocity, oxidant-rich jet having an auto-thermal ignition temperature greater tha... | 06/28/2005 |
| 6849228 | Blowing lance nozzle A blowing lance nozzle (1) having: a central tube (2) supplying stirring gas, an inner tube (5) for intake of a cooling liquid, an outer tube (10) for evacuation of the cooling liquid, a heat exchanging space (13), and an outlet co... | 02/01/2005 |
| 6802887 | Method and device for feeding a gas to a metallurgical vessel A method is for feeding a gas into a metallurgical vessel having a condensable and/or evaporable component entrained by the gas. The gas is fed to the metallurgical vessel via one or more gas supply means. According to the method, if there are a number of the gas su... | 10/12/2004 |
| 6793710 | Method for blowing oxygen in converter and top-blown lance for blowing oxygen A method for blowing oxygen in a converter uses a top-blown lance having a Laval nozzle installed on its tip. The Laval nozzle has a back pressure of the nozzle Po(kPa) satisfying a formula, Po=FhS/(0.00465·Dt2), with respect to a oxygen-flow-... | 09/21/2004 |
| 6773484 | Extensionless coherent jet system with aligned flame envelope ports A coherent jet lance and operating method wherein the need for a lance extension is eliminated using two rings of ports to deliver respectively fuel and oxidant flame envelope gases around the primary gas jets to maintain the gas jets coherent wherein the ports of t... | 08/10/2004 |
| 6773659 | Gas injection lance A gas injection lance and an apparatus employing the lance for producing ferrous metal are provided. The lance has an elongated flow duct made of inner and outer concentric carbon steel tubes, a cooling water supply and return, and exterior surface which is designed... | 08/10/2004 |
| 6709630 | Metallurgical lance and apparatus A metallurgical lance for introducing gas from above into a volume of metal in a vessel includes a head having at least one ejector formed therein. The ejector includes a Laval nozzle surrounded by a shrouding gas passage. Both the Laval nozzle and the shrouding gas... | 03/23/2004 |
| 6679936 | Molten metal degassing apparatus A tool or fluxing head for fluxing molten metal that comprises a fluxing gas supply line that communicates with the interior of an inverted plunger cup providing a hollow interior into which refining agents and other additives that are to be introduced in... | 01/20/2004 |
| 6673305 | Apparatus for injecting gas into a vessel An injection lance (26) for injecting hot gas into a vessel includes an elongate gas flow duct (31) which receives hot gas from a gas inlet structure (32) and an elongate central tubular structure (33) which extends within gas flow duct (31) from its rear... | 01/06/2004 |
| 6660223 | Device for atomizing liquid melts In a device for atomizing liquid melts, in particular oxidic slags or glasses, including a slag tundish and an outlet opening into which a lance is immersed to inject gases or vapor while forming an annular gap, the lance (3) is comprised of two coaxial t... | 12/09/2003 |
| 6604937 | Coherent jet system with single ring flame envelope A coherent jet lance and operating method wherein the need for a lance extension is eliminated using a single ring of ports to deliver flame envelope gases around the primary gas jets to maintain the gas jets coherent.... | 08/12/2003 |
| 6599464 | Steelmaking lance with integral temperature probe This invention concerns a blowing lance and a procedure for the metallurgical treatment of molten steel in a converter with oxygen top blown over the molten steel. In order to monitor the treatment process the intention is for a temperature probe (21) to ... | 07/29/2003 |
| 6596223 | Apparatus for direct smelting A direct smelting process for producing iron and/or ferroalloys is provided, which involves forming a molten bath in a metallurgical vessel, supplying feed materials, injecting oxygen containing gas, generating upward movement of the molten material from ... | 07/22/2003 |
| 6565800 | Apparatus for injecting solid particulate material into a vessel An elongate metallurgical lance (27) for injecting solid particulate material into molten material held within a vessel (11) is disclosed. The lance includes a central core tube (31) through which to pass solid particulate material, an annular cooling jac... | 05/20/2003 |
| 6562287 | Blasting lance with a gas/liquid mixing chamber and a method for the expansion cooling thereof The invention relates to a method for cooling a lance provided for converting a medium into a molten mass and/or for measuring the properties of the molten mass. A gas/liquid mixture is fed as a cooling medium into a cooling circuit which is closed up to ... | 05/13/2003 |
| 6558614 | Method for producing a metal melt and corresponding multifunction lance The invention relates to a method for producing a metal melt in a metallurgical vessel, in particular an iron or steel melt, feed substances which contain metals and/or metal oxides, being charged in solid and, if appropriate, molten form into the metallu... | 05/06/2003 |
| 6478848 | Direct smelting process A direct smelting process for producing metal from a metalliferous feed material is disclosed. The direct smelting process is a molten bath-based process in which smelting occurs predominantly in the metal layer, carrier gas/metalliferous feed material/so... | 11/12/2002 |
| 6450799 | Coherent jet system using liquid fuel flame shroud A method and apparatus for establishing one or more coherent jets from a lance wherein liquid fuel is provided into a recession on the lance face along with motive gas, and is used to generate a flame shroud to maintain jet coherency.... | 09/17/2002 |
| 6440356 | Apparatus for injecting gas into a vessel Apparatus for injecting gas into a vessel comprises a lance 26 having a gas flow duct 31 extending longitudinally from a rear end to a forward end (36) from which to discharge gas from the duct. An elongate body 38 disposed within the forward end of the d... | 08/27/2002 |
| 6383445 | Supersonic coherent gas jet for providing gas into a liquid A system for establishing and maintaining a supersonic coherent gas jet, effective with either an oxidizing or an inert gas, employing a converging/diverging nozzle for establishment of a non-disruptive initial supersonic velocity, and a slower moving def... | 05/07/2002 |
| 6379415 | Method for feeding granular solids into metal melts The invention relates to a method for feeding solids into metal or steel melts whereby granular solids required during the analysis adjustment are fed in a predetermined quantity into the turbulent regions of the metal melt in a dense flow process by mean... | 04/30/2002 |
