Quotables
"We live in a society exquisitely dependent on science and technology, in which hardly anyone knows anything about science and technology."
Carl Sagan
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7976774 | Composite sparger A composite sparger for use in elevated temperature and corrosive environments. The composite sparger is formed from a substrate tube with a thermally conductive interlayer on its surfaces exposed to the reactor environment. The thermally conductive interlayer is pr... | 07/12/2011 |
| 7968048 | Composite sparger A composite sparger for use in elevated temperature and corrosive environments. The composite sparger is formed from a thermally conductive non-combustible metal substrate. The surfaces of the conductive non-combustible metal exposed to the reactor environment are p... | 06/28/2011 |
| 7687020 | Apparatus for injecting material into a vessel An apparatus for injecting particulate and/or gaseous material into a metallurgical vessel for performing a metallurgical process is disclosed. The apparatus comprises a duct and an annular duct tip at a forward end of the duct. The apparatus also comprises inner an... | 03/30/2010 |
| 7550109 | Double chamber single directional spiral tuyere for blast furnaces A double chamber single directional spiral tuyere for blast furnaces is disclosed. The tuyere includes a body unit, a spiral unit and a cover unit, with a body chamber having a body nose passage and a body main passage defined in the body unit, and a nose chamber ha... | 06/23/2009 |
| 7534390 | Tuyere device for introducing gaseous media under a liquid-metal layer A tuyere device for introduction of gaseous media under a liquid metal layer comprises a nest block made of refractory material provided with a sleeve incorporated therein, Coaxial metal tubes with at least one central channel and at least one annular channel which ... | 05/19/2009 |
| 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 |
| 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 |
| 7258831 | Injector-burner for metal melting furnaces The following invention relates to an injector-burner for applications in the metalwork field, in particular for use in electric arc furnace melting processes having a frontal head with two series of holes arranged in two concentric crowns, the inner crown of holes ... | 08/21/2007 |
| 7138085 | Tuyere cooling system A tuyere cooling system which includes a coolant circuit for a body section and nose section. A valve is operable to connect the coolant circuits in series or to disconnect flows to the nose section of the tuyere so that if the nose of the tuyere tears during operat... | 11/21/2006 |
| 7117675 | Cooling of liquid fuel components to eliminate coking A system for cooling at least one gas turbine liquid fuel component located in a high temperature environment to eliminate coking in the component is disclosed. The system includes a sleeve surrounding the liquid fuel component, a device for providing a current of c... | 10/10/2006 |
| 7105126 | Flapper gas nozzle assembly A check valve assembly for the forced gas cooling system of a vacuum heat treating furnace is disclosed. The check valve assembly includes a check valve for installation on the exterior of a hot zone wall in a vacuum heat treating furnace. The check valve includes a... | 09/12/2006 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 6533991 | Cooling gas injection nozzle for a vacuum heat treating furnace A nozzle for injecting a cooling gas in a vacuum heat treating furnace is described. The cooling gas injection nozzle according to the present invention has a forward portion with a first central opening formed therethrough. The cooling gas injection nozz... | 03/18/2003 |
| 6503442 | Metal-zirconia composite coating with resistance to molten metals and high temperature corrosive gases The coated device contains a coating for use with corrosive environments at high temperatures. The device has a bond coat consisting essentially of, by weight percent, 0 to 5 carbon, 20 to 40 chromium, 0 to 5 nickel, 0 to 5 iron, 2 to 25 total molybdenum ... | 01/07/2003 |
| 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 |
| 6383253 | Method for alloying steels and device for carrying out the method Alloying and/or reducing powder is pumped directly into the steel melt at a pressure of at least 20 bar, preferably at least 40 bar, with at most 20% of a fluidizing agent and the powder is discharged from the delivery line by a plunger extending across t... | 05/07/2002 |
| 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 |
| 6217824 | Combined forged and cast lance tip assembly A lance tip assembly for a water-cooled lance as well as a method for constructing same. The lance tip assembly includes a first component of solid cast metal which is secured to a second or lower component of forged metal. Each active material discharge ... | 04/17/2001 |
| 5989488 | Blast tuyere of a blast furnace A blast tuyere of a blast furnace making it possible that the temperature of Cu of the outer surface of the tuyere is not overheated to its melting point or higher so as to prevent tuyere failure and endure long-term use. This tuyere comprises a tuyere tr... | 11/23/1999 |
| 5958814 | Composite structure comprising a component of electro-cast refractory and elements highly resistant to corrosion and erosion A composite and monolithic refractory structure, particularly adapted for making furnaces for glassmaking or the like, constituted by a block-shaped component made of electro-cast refractory material based on oxides of aluminum, zirconium, silicon, and th... | 09/28/1999 |
| 5932169 | Removal of slag and/or steel build-up from lances A method of removing slag and/or steel build-up from lances in steel making furnaces includes blasting dry ice (solid CO2) pellets on to a hot lance as it is being drawn out of a furnace. A refractory or ceramic coating may be applied to the la... | 08/03/1999 |
| 5928603 | Device for sealing a lance in an opening for introduction of the lance into a container under pressure A device for sealing a lance (12) in an opening in a container under pressure, in particular a shaft furnace, is described. The device comprises a first casing (46) with an end wall on the shaft furnace side and on the environment side, which are each pro... | 07/27/1999 |
| 5800773 | Segmented smelt spout A segmented smelt spout comprising an assembly of different casting shapes wherein one shape constitutes the base segment, which is installable in a chemical recovery unit, and the other shapes are a combination of straight and curved cast segments, which... | 09/01/1998 |
| 5667201 | Smelt spout for a recovery furance A smelt spout for a chemical recovery furnace comprises a trough of U-shaped profile fabricated as a casting in a nickel-chromium alloy containing a minor amount of niobium. A system incorporating the spout includes a cooling arrangement which delivers co... | 09/16/1997 |
| 5626753 | System and method for the transport of lime A filter for use in a coupling disposed between first and second tubes which convey lime from a movable carrier to a processing pot in a steel mill. The filter has a plurality of openings sized and positioned to allow passage of lime and exclude contamina... | 05/06/1997 |
| 5478053 | Refractory gas purging device This invention relates a refractory gas purging device for the introduction of gases through a metallurgical vessel to molten metal therein, the device having improved wear indication, safety, and performance. In particular, the refractory gas purging dev... | 12/26/1995 |
| 5465942 | Tuyere arrangement for the introduction of agents into a molten bath and method of operating such a tuyere arrangement To increase the service life of a tuyere arrangement for the introduction of agents into a molten bath, comprising an apertured block (3) refractory material which can be fitted into the wall (1) of a vessel (12) and which includes a cylindrical body (4) ... | 11/14/1995 |
| 5458320 | Accretion controlling tuyere A tuyere for refining molten metals or melting metal scrap or oxides charged into a vessel. The tuyere comprises three concentric pipes of copper or stainless steel encased in refractory. An annular stream of natural gas surrounds an annular stream of oxy... | 10/17/1995 |
| 5403378 | Method and apparatus for protecting an injection device disposed in a hot blast conduit of a blast furnace To prevent burn-back at a coal dust injection lance which projects into a hot blast conduit of a blast furnace, cooling is effected using atomized coolant. Water is preferred as the coolant. The carrier gas used for the atomized water is either air or the... | 04/04/1995 |
| 5350158 | Metallurgical lance and method of cooling the lance A metallurgical lance incorporates an indirect cooling system, separate from and independent of the reactants which are fed through a center passageway (12) to a melt, bath or the like. An outer passageway (10) extends around the center passageway (12) an... | 09/27/1994 |
| 5346186 | Nozzle guard for blast furnace mudgun A nozzle guard device (50, 50') has a generally C-shaped half-shell configuration for shielding a lower and otherwise exposed portion of a blast furnace mudgun nozzle (22) from damaging contact with molten metal and slag during taphole closure operations.... | 09/13/1994 |
| 5332199 | Metallurgical vessel Apparatus for supplying a molten metal (5) in a metallurgical vessel (3) with a gas and fine-grain solid materials comprising a water-cooled first lance (117) for the supply of the gas and a second lance (119) for the supply of the solid materials. The su... | 07/26/1994 |
| 5257280 | Gas introducing and stirring apparatus of metallurgical vessel The present invention has been devised to obtain a metallurgical effect by introducing refining gas into a molten metal in a metallurgical vessel and stirring the molten metal sufficiently by convection, and to improve durability of one nozzle or a few no... | 10/26/1993 |
| 5244188 | Locking device for the overextensioning of a pipeline compensator To absorb thermal expansions and relative movements, as well as to transmit torques, compensators, which are provided with an overtensioning device, are installed between the tuyere connections of a blast furnace and the hot-blast circulating duct. During... | 09/14/1993 |
| 5225143 | Device for directional gas distribution into molten metal A solid non-permeable pocket block for incorporation in a normal refractory lining of a ladle or other metallurgical vessel is provided with a plurality of passageways through which gas, such as argon, can be introduced into molten metal in a ladle or the... | 07/06/1993 |
