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| Number | Title | Issue Date |
| 7407621 | Mobile processing enclosure for preventing air pollution A track-based mobile system for use with processes generating air-borne pollutants, for preventing contamination of the atmosphere. An enclosure for containing air-borne pollutants and a filtering system for removing the pollutants from the air are movable as a unit... | 08/05/2008 |
| 7159796 | Device for spraying a substance onto a medium A device for spraying at least one substance onto a medium includes a supply of vector gas, a substance feed in communication with a supply of the substance and at least one shutter which interrupts communication between the substance feed and the supply of substanc... | 01/09/2007 |
| 6752710 | Closed capture emission system An apparatus and method for capturing the emissions from a controlled atmosphere treatment apparatus of the type having at least one, and usually several, controlled atmosphere zones therein and exhaust stacks that deliver environmentally unfriendly emissions theref... | 06/22/2004 |
| 6602461 | Arrangement for pouring a pourable melt made up of a copper alloy An arrangement for pouring a pourable melt made up of a copper alloy, which comprises a melting furnace, pivotable about a horizontal pivot axis, having a pouring tube which discharges pourable melt and through which the pourable melt can be conveyed unde... | 08/05/2003 |
| 6585929 | Direct smelting vessel A direct smelting vessel which is adapted to contain a molten bath of metal and slag is disclosed. The vessel includes an off-gas duct that has: (a) a first section which has a relatively slight upward inclination to the horizontal from an inlet end of the fir... | 07/01/2003 |
| 6290899 | Converter installation having a divided sealing ring fitted between the converter and the flue gas chimney A converter plant with a sealing ring provided between the hood of a tiltable converter and the mouth of a smoke gas flue, drives are provided, for moving the sealing ring can be moved so far away from the converter hood that the converter can be tilted w... | 09/18/2001 |
| 6219371 | System to plug the delta area of the roof of an electric arc furnace System to plug the roof of an electric arc furnace having a main chamber or melting volume arranged below the roof and at least one electrode introduced into the main chamber, the system comprising an upper element or auxiliary roof element arranged on th... | 04/17/2001 |
| 6175584 | Aspiration system to reduce the losses of fine materials and powders from an electric arc furnace Aspiration system to reduce the losses of fine materials and powders from an electric arc furnace having a lower hearth suitable to contain the bath of metal material being melted, a substantially cylindrical chamber arranged above the hearth, at least on... | 01/16/2001 |
| 6086817 | Off-gas hood for a basic oxygen furnace and method of repair The invention is directed to water-cooled furnace hoods that exhaust gases away from a work area, and in particular, it is directed to an off-gas hood for use with a basic oxygen furnace (BOF). The furnace hood includes an assemblage of panels fastened to... | 07/11/2000 |
| 6083453 | Tundish having fume collection provisions Disclosed is a tundish assembly having fume collection provisions. The tundish assembly includes a tundish, a tundish cover, and a tundish hood. The hood has provisions for connecting the assembly to a vacuum source or other air moving means to thereby dr... | 07/04/2000 |
| 6077473 | Torch cutting enclosure having fume collection provisions A torch cutting and fume collecting enclosure is disclosed that is particularly adapted for the collection of lead-containing fumes and gases emitted during cutting of steel strands. The enclosure comprises a plurality of walls and two flexible barriers d... | 06/20/2000 |
| 6071467 | Technique and apparatus for ladle cleanout An apparatus and technique for collecting fumes from a metallurgical vessel such as a ladle are disclosed. The apparatus and technique are particularly well suited for collecting fumes during a cleanout operation of one or more discharge ports along the b... | 06/06/2000 |
| 6036915 | Water-cooled ladle hood A water-cooled multipart hood for metallurgical vessels, particularly pouring ladles, with cooling tubes arranged welded tube against tube and/or with gaps between the tubes, with an opening arranged in the cover of the hood for inserting a refractory cor... | 03/14/2000 |
| 6036914 | Dumping bay with fume collecting provisions An improved dumping bay particularly adapted for preventing the escape of hazardous fumes into other areas of a facility is disclosed. The dumping bay is fully enclosed and utilizes a unique air flow routing technique for collecting fumes, such as from a ... | 03/14/2000 |
| 6017486 | Comprehensive fume collection system for production of leaded steel A comprehensive fume collection system, particularly adapted for the collection of lead-containing fumes or gases typically emitted during the manufacture of leaded steel, is disclosed. The preferred fume collection system comprises four sections, each se... | 01/25/2000 |
| 5993727 | Fume collecting ladle cover A metallurgical vessel cover having integral fume collection provisions is disclosed. The cover features a plurality of inlet openings defined about the perimeter of the cover that direct fumes or other gases residing around the exterior of the cover, thr... | 11/30/1999 |
| 5896409 | Fume intake and cooling device for electric arc furnaces Fume intake and cooling device for intake conduits (11,111,211) in electric arc furnaces (26a,26b), comprising a containing structure (28) associated at one end (12) with an aperture on the roof of the furnace and connected at the second end (13) with an ... | 04/20/1999 |
| 5846480 | Aluminum remelting furnace, in particular for melting aluminum scrap to be recycled An aluminum remelting furnace for recycling scrap. In order to prevent atmospheric dispersion of toxic substances from the combustion of aluminum scrap contaminants, the furnace includes a loading chamber positioned on the upper wall of the furnace which ... | 12/08/1998 |
| 5788918 | Dross press fume extraction system A dross press is enclosed within a cabinet which is normally maintained at a negative pressure relative to ambient air pressure. The cabinet is provided with locked doors to prevent egress of explosive gases or pieces of metal. The cabinet is also equippe... | 08/04/1998 |
| 5782188 | Pyrolytic combustion apparatus and method A method and apparatus for incinerating waste material and in particular, for incinerating particulate material resulting from the shredding of vehicles. The particulate material is fed to one end of a rotary drum, and is subjected in the drum to pyroliti... | 07/21/1998 |
| 5744093 | Cover for launders A cover is provided for a launder, or an equivalent open-topped vessel for containing molten metal, the cover including a heat-insulative layer spanning the open top of the vessel, with a spacer arrangement to maintain a gap of uniform width between the h... | 04/28/1998 |
| 5662860 | Apparatus for producing molten pig iron by direct reduction Apparatus for producing molten pig iron by direct reduction of iron ore, comprises (i) a metallurgical vessel, in which with supply of coal and oxygen the iron ore undergoes a final reduction with production of a process gas and said process gas undergoes... | 09/02/1997 |
| 5518221 | Method and apparatus for inert gas blanketing of a reactor or vessel used to process materials at elevated temperatures such as an induction furnace used to remelt metals for casting A method and apparatus for blanketing the surface of material, e.g. molten metal contained in an open top vessel, e.g. induction furnace, by establishing a swirling flow of an inert gas having a density greater than air at the top of the vessel. Inert gas... | 05/21/1996 |
| 5489085 | Waste-gas piping for a filter dust melting furnace In a filter dust melting furnace, the waste gases occurring in the interior (9) of the furnace are conducted outward through a waste-gas line (5) in the furnace top. Provided in the course of the waste-gas line is a quench (20) for the abrupt cooling of t... | 02/06/1996 |
| 5458671 | Suppression of fume in metal pouring Molten (M) is poured into a receiver (8,28) designed to reduce fume and then out into an open area (P) via an outlet (9,29) designed to cause the metal (M) to flow in a laminar flow. A hood (11) may be present above the receiver (8,28).... | 10/17/1995 |
| 5435835 | Method and system for removing and/or causing recycling of materials A system and process for treating dust and sludge from iron and steel making operations and includes separating iron and carbon from zinc and lead. Separation is performed in a series of hydrocyclones associated in a series-parallel fashion, The iron and ... | 07/25/1995 |
| 5410565 | Furnace, in particular an electric furnace, for treating liquid metal The furnace includes a vessel closed by a floating roof, and a sealing means mechanism between the roof and the vessel. The sealing mechanism includes two joint surfaces, one of which is arranged on the peripheral edge portion of the roof whereas the othe... | 04/25/1995 |
| 5393037 | Smelting unit with furnace rocking cradle A smelting unit having a furnace vessel (11) which is mounted on a furnace rocking cradle (13) and which can be closed by a cover (12), and bar electrodes (28) which can be lowered into the furnace vessel (11) and which can be raised and lowered by means ... | 02/28/1995 |
| 5330161 | Spray cooled hood system for handling hot gases from a metallurgical vessel utilizing pneumatic processing of molten metal Hood assembly for pneumatic process metallurgical vessel, such as BOF, which includes removeable spray cooled sub-assemblies at predetermined locations in the hood assembly.... | 07/19/1994 |
| 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 |
| 5215573 | Treatment of melts in a ladle and apparatus for such treatment A ladle arrangement intended for use when treating a metal melt, in which gas or gas/powder mixture is delivered to the melt (2) which substantially fills the ladle (1), and departing gases are extracted by suction through a hood mounted above the ladle. ... | 06/01/1993 |
| 5211744 | Method and means for improving molten metal furnace charging efficiency Utilization of metal chips, especially scrap metal chips, particularly brass and aluminum, by introduction of the metal chips into a pool of molten metal of which they are formed or an alloy thereof, with minimization of fuel cost, heat loss, and minimal ... | 05/18/1993 |
| 5177763 | Furnace bottom structure of direct current electric furnace A furnace bottom structure of a direct current electric furnace has at least one furnace bottom electrode and at least one gas injection tuyere provided in the furnace bottom refractory of the direct current electric furnace. Preferably, the furnace botto... | 01/05/1993 |
| 4993690 | Electroslag remelting plant including an ingot mold and a hood An electroslag remelting plant includes an ingot mold 4 for forming a block from remolten material, at least one consumable electrode 26, a body having at least one vertically driven electrode rod 20 for the advance of the consumable electrode and a hood ... | 02/19/1991 |
| 4984771 | Heating system for steel casting ladles Steel casting ladles present at different locations are supplied alternately with one heating system for all of the steel casting ladles. The heating system including current bearing heating cables is arranged on a wheelable platform which in turn is pres... | 01/15/1991 |
| 4983214 | Method and apparatus for direct reduction of metal oxides A method and apparatus is disclosed for direct reduction of metal oxides, using a rotary kiln, fed with greenball pellets, the kiln having a feed-end and a discharge end. A first chamber within the kiln, and adjacent to the feed-end, is used for drying, p... | 01/08/1991 |
| 4865296 | Ladle slagging stand A ladle slagging stand includes a tilting arrangement supporting a ladle, a slag vessel, and a slagging slide scumming the surface of the melt in the ladle placed on the tilting arrangement. In order to be able to seize all the gas and dust emissions form... | 09/12/1989 |
| 4842255 | Dross cooling apparatus A system for cooling non-ferrous metal dross comprises an open-top metal pan to receive the dross which pan is divided by internal partitions into open-top compartments and has sufficient heat capacity to act as a heat sink to absorb heat from the dross, ... | 06/27/1989 |
| 4836510 | Metallurgical plant In order to ensure that flue gases will not escape from an enclosure (1) which contains a metallurgical vessel (2) as charging boxes (10) are moved into and out of the enclosure, the charging crane (14) is disposed inside the enclosure (1) and the enclosu... | 06/06/1989 |
| 4792123 | Metallurgical plant A metallurgical plant comprises a tiltable metallurgical vessel (1) and an enclosure surrounding said vessel. The vessel is provided with a cover (6), which is adapted to be lifted and to be horizontally pivotally moved away from the vessel (1) so as to p... | 12/20/1988 |
