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| Number | Title | Issue Date |
| 8124004 | Slag door assembly for an electric arc furnance A sealing apparatus for a slag door of a metallurgical furnace, having a mounting assembly for mounting the apparatus to the furnace, and at least one closure element, moveable from an open position that is exterior of the slag door opening, to a closed position tha... | 02/28/2012 |
| 7947216 | Smelt spout opening cleaner, cleaning head and apparatus A spout opening cleaner for cleaning smelt spouts of recovery boilers and the like includes an actuation arm and self-aligning cleaning head. The cleaning head employs open bail designs for enabling continued flow of smelt during a cleaning cycle. ... | 05/24/2011 |
| 7767137 | Sealing apparatus for a slag door of a metallurgical furnace A sealing apparatus for a slag door of a metallurgical furnace, having a mounting assembly for mounting the apparatus to the furnace, and at least one closure element, moveable from an open position that is exterior of the slag door opening, to a closed position tha... | 08/03/2010 |
| 7700035 | Direct smelting plant and process A direct smelting plant for producing molten metal from metalliferous feed material includes a pretreatment unit for pretreating metalliferous feed material and producing pretreated feed material, a direct smelting vessel for smelting pretreated metalliferous feed m... | 04/20/2010 |
| 7435374 | Surface treatment facility of metal plate and method for producing metal plate A surface treatment apparatus for a metal sheet has a blasting device for blasting solid particles having an average particle diameter of 300 μm or less onto the metal sheet which is continuously transferred, a blast chamber in which the blasting device is disposed... | 10/14/2008 |
| 7364690 | Device for injecting a treatment gas into a molten metal The invention relates to a device (8) which is used to inject a treatment gas into a molten metal contained in a tank (1) and which is designed to be fixed in one of the walls of said tank. The inventive device comprises at least one injection nozzle (... | 04/29/2008 |
| 7357011 | Method and apparatus for manufacturing metal strips The invention concerns a method for producing metal strip (1) in an installation (2), in which a metal strand, especially a thin slab, is brought to a desired temperature and/or is maintained at a desired temperature in a furnace (3, 3a, ... | 04/15/2008 |
| 6932938 | 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 ... | 08/23/2005 |
| 6923573 | Apparatus and method for measuring temperature of molten metal The invention provides a cooling system for protecting an image fiber and an imaging device from thermal influences and a temperature measurement apparatus, for a molten metal, capable of being easily controlled and stably measuring the temperature. The temperature ... | 08/02/2005 |
| 6835229 | Method and apparatus for clearing a powder accumulation in a powder delivery tube A system for monitoring coal flow through a coal delivery tube in a blast furnace fuel injection system is disclosed, which system automatically actuates a purge cycle for clearing accumulations of coal from a coal lance when a temperature drop indicative of an immi... | 12/28/2004 |
| 6797229 | Apparatus for removing dust accretions from a smelting furnace The invention relates to an apparatus for mechanically breaking up and detaching dust accretions created by process gases and accumulated on the inner walls of a suspension smelting furnace and/or a waste heat boiler permanently connected to the suspension smelting ... | 09/28/2004 |
| 6689309 | Apparatus for clearing dust accretions in connection with a smelting furnace An apparatus for clearing dust accretions in connection with a smelting furnace, particularly in the contact area between the uptake shaft and waste heat boiler of a flash smelting furnace. The apparatus comprises a wall element (1) arranged in the area (... | 02/10/2004 |
| 6663825 | Method and apparatus for installing or replacing a furnace tap hole insert An apparatus for replacing a tap hole insert in a furnace includes a drill detachably mounted to a drive shaft in a boom arm of a utility machine with the drill adapted to remove the existing tap hole inserts to be replaced from outside of the furnace int... | 12/16/2003 |
| 6479011 | Method of scrapping furnace bottom section of blast furnace A solidified residual iron within a blast furnace is suspended up by employing a shell suspending device fixed to a tuyere arranged in a lower end portion of an upper portion of a furnace body suspended by a lift jack and a solidified residual iron suspen... | 11/12/2002 |
| 6165411 | Apparatus for producing metal to be semimolten-molded An improved apparatus for producing a semisolid shaping metal that has fine primary crystals dispersed in the liquid phase and which also has a uniform temperature distribution comprises a melt pouring section comprising a melting furnace which melts and ... | 12/26/2000 |
| 6039915 | Burn table A burn table includes a slag removal apparatus operably mounted beneath the flame cutting table and between a pair of spaced apart vertical panels which support the flame cutting table. The slag removal apparatus includes a blade mounted on a support fram... | 03/21/2000 |
| 5980816 | Method and apparatus for removing deposit in non-ferrous smelting furnace A method of removing furnace deposit in a non-ferrous smelting furnace, comprising the steps of inserting a lance 2 provided with a spray nozzle 4 at the tip thereof from a furnace ceiling into a furnace; spraying a reducing agent from the spray nozzle 4 ... | 11/09/1999 |
| 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 |
| 5827475 | Apparatus for removing an accretion from an uptake at the exit of metal producing furnace A hydraulic cylinder 41 of a second driver 40 brings both a scraper 20 and a first driver 30 into integrally movable relation so that the scraper 20 is caused to intrude into an uptake 10 of a furnace via an opening 14 defined on a vertical wall of the up... | 10/27/1998 |
| 5814126 | Method and apparatus for producing bright and smooth galvanized coatings A method for cleaning and treating the walls of a kettle containing a molten metal such as zinc comprises injecting nitrogen or other gas into the molten metal through a reaction container. The reaction container may contain a second metal capable of form... | 09/29/1998 |
| 5542650 | Apparatus for automatically cleaning smelt spouts of a chemical recovery furnace A smelt spout cleaner apparatus includes a cleaning head insertable into a smelt spout and movable in a substantially linear path along the smelt spout for thoroughly cleaning the spout. The cleaning head is mounted on one end of a substantially horizonta... | 08/06/1996 |
| 5527019 | Device and method for cleaning a filter The invention relates to a device and a method for cleaning a filter (7) disposed between a chamber contaminated with particles and a pump station. Herein a feedline (21) for oxygen or for an oxygen/inert gas mixture to the filter (7) is provided which is... | 06/18/1996 |
| 5358222 | Apparatus for oxidizing pulverous fuel with two gases having different oxygen contents The invention relates to a method for oxidizing the pulverous fuel of a furnace, advantageously a flash smelting furnace, by means of a burner, so that the oxidation takes place mainly owing to an effective mixing of two different combustion gases, pulver... | 10/25/1994 |
| 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 |
| 5044612 | Apparatus to clean refractory-lined conveyor troughs An apparatus for cleaning refractory-lined conveyor troughs for conveying molten metals and slags has a rail-guided carriage that extends across the trough and travels along the length of the trough, with a cleaning head supported by the carriage. Two whe... | 09/03/1991 |
| 5014965 | Process and apparatus to clean a molten metal or slag conveyor trough A process and apparatus to clean refractory-lined conveyor troughs for molten metals and slags by means of chains on a rotating drum. A motor is used to drive the drum, whose current consumption and/or speed are variable as a function of the load. Variati... | 05/14/1991 |
| 4814006 | Making of steel A method of making steel in several stages under a reaction slag and accompanied by addition of oxygen carriers involving the moving of a metallurigical vessel along at least one line along which each step of a plurality of metallurigical process steps is... | 03/21/1989 |
| 4591134 | Arrangement for cleaning a lance head of a lance introducible into a metallurgical vessel An arrangement for cleaning a lance head of a lance introducible into a metallurgical vessel includes a cleaning head being in contact with the lance head during the cleaning procedure and surrounding the lance head. The cleaning head and the lance are re... | 05/27/1986 |
| 4511124 | Method and composition for fluidization of accumulated pit scrap in soaking pits A composition for use in fluidizing accumulated pit scrap in ingot soaking pits is provided which contains from about 38 to about 56 wt. % SiO2, from about 2 to about 4 wt. % C, and from about 38 to about 56 wt. % FeO. A method is also provided... | 04/16/1985 |
| 4511125 | Ladle scraper mechanism A ladle scraper mechanism 20 comprises an outer frame 44 which supports and guides a carrier assembly 58 for up and down movement to move scraper legs 57, with scraper blades 72 at their lower ends, down along the lining of a ladle 22 containing a bath 40... | 04/16/1985 |
| 4353530 | Method and apparatus for automatically punching the tuyeres of a converter Method and apparatus for punching the tuyeres of a converter with a mechanical puncher mounted upon a carriage running on rails. Light intercepting plates encoded by light transmission holes are disposed opposite each tuyere. Light is shone towards the li... | 10/12/1982 |
| 4350324 | Method of removal of slag deposits from the bottom of a furnace Slag deposited on the bottom of a steel making furnace, especially a soaking pit for steel ingots, is difficult to remove. To enable this to be done while the furnace is hot, it is now proposed to supply a substance, e.g. ferro-silicon, which lowers the m... | 09/21/1982 |
| 4328959 | Method and device for removing used refractory lining and/or slag deposits from elongated vessels An apparatus and method for removing used refractory lining or slag or both from the inner wall of an elongated vessel. The apparatus includes a cutting disc movably mounted on a guide mechanism which may be fixably located within the vessel. In accordanc... | 05/11/1982 |
| 4307871 | Apparatus for automatically punching the tuyeres of a converter In an apparatus for punching the tuyeres of a converter for smelting of copper or nickel, the apparatus including a carrier frame supported by wheels and which is capable of moving on the working platform located adjacent to the converter, the carrier fra... | 12/29/1981 |
| 4303229 | Mechanical punching device for punching the tuyeres of a converter A mechanical punching device for punching the tuyeres of a converter properly independently of the angle of inclination of the converter. Link mechanisms, each having two turning arms, are provided on both sides of a carriage with the two turning arms bei... | 12/01/1981 |
| 4277281 | Continuous filter for molten copper Disclosed is apparatus for and a method of continuously filtering and optionally degassing molten copper and otherwise extracting impurities therefrom comprising disposable porous ceramic foam filtering means and means for supplying a deoxidizing or clean... | 07/07/1981 |
| 4223875 | Apparatus for deskulling tundishes and similar vessels An apparatus for deskulling tundishes comprises a support for holding a tundish to be deskulled in upright or inverted position and an impact hammer mounted on a carriage and movable longitudinally and transversely relative to the tundish whereby the latt... | 09/23/1980 |
| 4202536 | Automated installation for punching and cleaning of converter tuyeres An automated installation for punching and cleaning converter tuyeres for use in non-ferrous pyrometallurgy. The invention employs a travel unit fixed either to the converter housing permits movement of the punching unit relative to the tuyeres and, conse... | 05/13/1980 |
| 4103878 | Apparatus for removing solids from the water seal trough of an annular material cooler Apparatus for removing solids such as iron oxide pellets and fines from the rotating water seal trough of an annular material cooler by periodically operating an air ejector pump, which is suspended in the trough and operated at predetermined intervals an... | 08/01/1978 |
| 4067556 | Device for contour cutting of metal plates A device for contour cutting of metal plates comprises a cutting table for supporting horizontally plates to be contour cut, a contour cutting unit movable along the cutting table, and scrap receiving means for receiving the cut scrap beneath the cutting ... | 01/10/1978 |
