Matches 1 - 50 out of 187 1 2 3 4 >
Match Document Document Title
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...
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...
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...
7445747 Apparatus for injecting solid particulate material into a vessel  
Smelting apparatus comprises a vessel ( 11 ) and a solids injection lance ( 27 a ) extending through an opening in the wall of vessel barrel ( 16 ) into the interior space of the vessel. Lance ( 27...
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 ...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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 CO 2 ) pellets on to a hot lance as it is being drawn out of a furnace. A...
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...
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...
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...
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...
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...
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)...
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...
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...
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...
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...
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...
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...
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...
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...
5198179 Gas injector  
The invention provides a gas injector (50) for a molten metal vessel, comprising: a gas inlet chamber (51) having an inlet port and at least one outlet port (54), each said outlet port (54) having...
5196155 Removable filter sieve for combustion piping  
A combustion piping system for a metal melting furnace is disclosed in which a sieve is used upstream of a flashback arrester to collect particulate matter carried in the fuel flow to the furnace...
5176875 Tubular water-cooled jacket for furnaces  
A tubular water-cooled jacket for furnaces is disclosed which includes a tubular member having a plurality of axial apertures and a plurality of transverse apertures. Each transverse aperture is...
5171511 Tuyere and method for discharging gas into a furnace  
A tuyere and method for discharging an agitating gas into the molten contents of an electrically heated furnace to reduce temperature and composition variations in its contents. The tuyere...
5152954 Gas plug for metallurgical smelting crucibles  
The invention concerns a gas plug for metallurgic smelting crucibles with a sheet-metal sheathing that comprises at least the gas connection side part of the outer surface and the bottom, with the...
5152952 Device for unclogging a lance intended to be inserted into a metallurgical vessel  
This device comprises a fixed support constituted by a cylindrical collar 14, through which the lance 5 may be axially displaced and scraping fingers 16 whose extremities, which comprise cleaving...
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...
5112029 Quick fluid injection assembly replacement in metallurgical reacters  
The present invention relates to a method and a fluid injection device for quick replacement, even in the red hot conditions, in a metallurgical reactor. The method comprises the external...
5106061 Compact lance  
A compact lance, for tuyeres. The lance provides a compact and secure holder by providing a bushing between a collet chuck and a gasket sleeve. This bushing can move axially inside an inner hole of...
5076551 Flushing arrangement for a metallurgical vessel  
A flushing arrangement for a metallurgical vessel, in particular for a steelworks converter, includes a refractory lining constituting the working lining and pipes provided on predetermnined sites...
4989838 Metallurgical treatment lance  
A lance adapted for metallurgical treatment comprising an elongated tube-shaped member having a refractory coating thereon and a sleeve of carbon bonded refractory fitted about the tube-shaped...
4971295 Safety-type gas washing sink having improved heat dissipation properties  
A safety-type gas washing sink for use in introducing gas through a metallurgical vessel and molten metal therein includes a refractory wearable brick portion defining a first sink end to be...
4951928 Blowing lance arrangement  
A blowing lance to be used for the treatment of metallurgical melts includes a lance head having several expansion tuyeres directed to the bath level of the melt and penetrating a front plate of...
4944496 Apparatus for injecting gas into high temperature liquids, e.g. molten metals  
An injection nozzle for installation in the wall of a vessel for introducing gas into a liquid in the vessel. The nozzle comprises a body pierced by a passage which is terminated at the discharge...
4941646 Air cooled gas injection lance  
An air cooled refractory covered injection lance for introducing reactive gases below the surface of a molten metal bath where the lance is provided with means to surround the reactive gas conduit...
Matches 1 - 50 out of 187 1 2 3 4 >