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Matches 251 - 300 out of 3,596

Document Document Title
WO/2008/017797
Forced melt circulation of both the oxidic and metallic phases independently opens up the prospect of continuous processing up to 2200 °C using graphite lined reactors. Central to the new technology is oxygen-based combustion of CO with...  
WO/2008/018807
Apparatus of claim 1 wherein a protective gas effuses to a surface subject to air burn. A method of optimising electrode usage in an electric arc furnace, Hall Herault apparatus or other electrode system and/or arc generation in an elect...  
WO/2008/009468
The invention relates to an electric arc furnace roof top (10) comprising a central portion (14) and a peripheral portion (16) surrounding the central portion (14), each of these portions having an inner surface (24,26) suitable for faci...  
WO/2008/000608
The invention relates to a method for smelting steel scrap in a furnace, a working gas being blown into the furnace via a flow channel (8) in order to supply melting energy and being guided through at least one electrodeless plasma torch...  
WO/2007/147248
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 open...  
WO/2007/134789
Disclosed is the use of residual matter and/or waste as useful materials in electric low-shaft furnaces, said residual matter and/or waste being utilized for heating and/or as a carbon source. The low-shaft furnace used generally compris...  
WO/2007/134789
Disclosed is the use of residual matter and/or waste as useful materials in electric low-shaft furnaces, said residual matter and/or waste being utilized for heating and/or as a carbon source. The low-shaft furnace used generally compris...  
WO/2007/131459
The invention is a new method of chlorination of ore-bearing materials in a reactor (1) in the presence of chlorine and coke with a view to manufacturing metal chlorides as, for example, Fe, Cu, Ti, Sn, Al, Zr, V, Mo, Nb and Ta. Its subj...  
WO/2007/124592
An indirect-fired gas turbine power plant comprises a compressor; a turbine mechanically coupled to the compressor; a furnace; a heat exchanger inside the furnace and fluidly coupled at an inlet end to the compressor and at an outlet end...  
WO/2007/120028
The invention relates to a method and device for the induction stirring of liquid metal in the bath of a reverberatory furnace by the action of a traveling magnetic field whose frequency ranges from 50 to 60 Hz. The inventive method cons...  
WO/2007/106946
A forehearth (5) for containing a volume of molten material and a direct smelting vessel (3) that includes the forehearth are disclosed. The forehearth includes a forehearth connection (15) for connecting the foreheath with a smelting ch...  
WO/2007/099941
The level of slag in a main body of melting furnace is controlled by carrying out periodic opening and closing of a batch slag discharge port, detecting at least either any quantitative change of pressure within the main body of melting ...  
WO/2007/093135
The reactor primarily intended for titanium production, comprising a body (1) with the tubular jacket cooled by a cooling medium, which is equipped with melting electrodes (5) and which is adjusted for introduction of gaseous medium incl...  
WO/2007/082030
A method of using an induction furnace to process iron ore into an iron product such as pig iron in which iron ore is the main or exclusive source of iron fed into the induction furnace. Preferably the iron ore is concentrated and melted...  
WO/2007/082030
A method of using an induction furnace to process iron ore into an iron product such as pig iron in which iron ore is the main or exclusive source of iron fed into the induction furnace. Preferably the iron ore is concentrated and melted...  
WO/2007/072253
A DC arc furnace system (10) comprises an arc furnace comprising an electrode (24) extending into a vessel (14). A main DC power supply (28) is connected to the electrode and to an anode region (35) at a base of the vessel by a main furn...  
WO/2007/054957
An improved lance for LD steelmaking comprises a plurality of peripheral supersonic nozzles provided with a single inlet high pressure gas supply line and a central nozzle. The central nozzle is a subsonic nozzle provided with a separate...  
WO/2007/052448
A cleaning apparatus for electric furnace by-product gas recovery duct that is capable of removing any dust deposited in a gas duct from precooling column to Venturi scrubber at the time of dust removal from by-product gas generated in r...  
WO/2007/052494
A conventional combustion furnace has problems that its in-furnace temperature is up to 1100°C, has in many cased a fixed electrode, and a horizontal-moving type is difficult to use due to a power supplying method and an electrode tilte...  
WO/2007/034138
A control system for and method of controlling a vertical position of at least one electrode of an arc furnace, where the arc furnace comprises a furnace transformer having a primary, input side and a secondary, output side which is elec...  
WO/2007/034138
A control system for and method of controlling a vertical position of at least one electrode of an arc furnace, where the arc furnace comprises a furnace transformer having a primary, input side and a secondary, output side which is elec...  
WO/2007/019917
The invention relates to a tapping channel (1) for a metallurgical furnace, particularly for an electro-reducing furnace, comprised of at least one tapping brick (10, 11, 12) and of a cooling device in the vicinity of the tapping channel...  
WO/2007/016752
A smelting furnace having a vessel (102) for receiving material to be smelted. An inner surface (109) of the furnace is concave and reflective, at least an upper part thereof. A conductive electrode (120) of the furnace is continuously f...  
WO/2007/017210
A cooling device (4) for electrodes (1) of a metallurgical furnaces, such as reduction furnaces, arc furnaces, induction furnaces, etc. has at least one contact jaw (2) and a holding ring (3), and comprises a cooling shield or sealing cy...  
WO/2007/014519
A dynamic expanding application technology relates to a technology which changes a static technology into a corresponding dynamic technology, in particularly, relates to an improvement for dynamically changing the material quality, const...  
WO/2007/009924
The invention relates to a method for determining a state variable of an electric arc furnace, especially for determining the level of the foamed slag (15) in an electric arc furnace. According to said method, the energy supplied to the ...  
WO/2007/006558
An apparatus for the combustion of gas exiting from an electric arc furnace for the preheating of scraps entering the furnace itself foresees an insertion device of comburent substance into a preheating chamber or loading tunnel of the s...  
WO/2007/006558
An apparatus for the combustion of gas exiting from an electric arc furnace for the preheating of scraps entering the furnace itself foresees an insertion device of comburent substance into a preheating chamber or loading tunnel of the s...  
WO/2006/131384
The invention relates to a smelting or reduction furnace (2), in which the charge stock (9) is supplied using feed pipes (17). Each feed pipe (17) has a mouthpiece (18) that is not cooled and is configured from an uncooled wear-resistant...  
WO/2006/131372
The invention concerns a method for extracting a metal from a slag containing the metal, in which the liquefied metal-containing slag is heated in at least one arc furnace (1, 2). In order to develop an improved method for extracting, in...  
WO/2006/125662
The invention relates to a melting or holding furnace (1) with a furnace chamber (4) surrounded by a housing (3), which chamber holds the melt with a maximum filling level. The furnace also comprises an outlet opening for transferring th...  
WO/2006/124422
A method for control of the air/fuel ratio of the burner(s) (excess air) of a thermal cracker which includes three steps. The first step is to direct a wavelength modulated beam of near infrared light from a tunable diode laser through c...  
WO/2006/124422
A method for control of the air/fuel ratio of the burner(s) (excess air) of a thermal cracker which includes three steps. The first step is to direct a wavelength modulated beam of near infrared light from a tunable diode laser through c...  
WO/2006/117426
The invention relates to a steel-structured, water-cooled electric arc furnace lid that is fitted in a gas-tight manner on top of the furnace vessel and provided with lead- throughs for electrodes and apertures for material feed, the und...  
WO/2006/113969
A direct smelting vessel (3) for operating a molten bath-based direct smelting process under pressure conditions in the vessel is disclosed. The vessel includes a forehearth (67) for tapping molten metal continuously from the vessel. The...  
WO/2006/111579
Means for conveying hot granular material from a loading zone to an arc melting furnace (3) , comprising a horizontal trough (1) , trough vibration generators that cause the granular material to move along the trough, a sluice gate (4) t...  
WO/2006/108691
An equipment for the measurement and control of load material and scrap metal feeding into an electrical arc furnace, including an automatic control device for feeding control of load material or scrap according to the energy supplied to...  
WO/2006/092654
A multilevel carborundum electric heating pipe type vitrification furnace comprises a plurality of segments of furnace bodies including a casing with an insulation layer provided inside, wherein, the insulation layer is provided with a s...  
WO/2006/092053
Binding systems are described for applying compressive forces on the refractory hearth and/or refractory sidewall of a circular furnace having an outer metal shell which may be segmented. One preferred binding system comprises a tensioni...  
WO/2006/092654
A multilevel carborundum electric heating pipe type vitrification furnace comprises a plurality of segments of furnace bodies including a casing with an insulation layer provided inside, wherein, the insulation layer is provided with a s...  
WO/2006/092549
Continuous production of liquid steel or alloy is performed in a closed loop melt circulation system comprised of a reduction arm (1) and a post-combustion arm (2) with product molten metal being circulated by gas-lift pump (3) and sipho...  
WO/2006/089870
Melting plant (10) and relative method for the production of steel, comprising a melting furnace (11) fed laterally with a metal charge conveyed towards the melting furnace (11) by means of a conveyor (12) disposed at least partly inside...  
WO/2006/089869
Cover (10) for a connection conveyor used for loading a metal charge into a melting furnace (11) of the type that uses a loading system with a main conveyor (15) and introduction of the charge from a lateral aperture (17) of the furnace ...  
WO/2006/089897
Conveyor apparatus (10) for conveying a metal charge towards a container (15) of a melting plant (H)/ comprising at least an oblong bearing structure (20), on which a conveyor channel (21) is fixed and on which a vibration device (32) is...  
WO/2006/089867
Device (10) for loading a metal charge in a melting furnace (11) comprising a hearth (12) having an aperture (17). The device (10) comprises a main conveyor (15) terminally associated with a connection conveyor (16) which cooperates with...  
WO/2006/089971
An electric arc furnace (10) has an outer shell (12) and an inner refractory lining (24). During its operation the electric arc furnace (10) contains a bath (28) of molten metal which has a minimum and a maximum operational level (32). A...  
WO/2006/089868
Connection conveyor (10) used for loading a metal charge into a melting plant or furnace (11) of the type that uses a loading system with a main conveyor (15) and introduction of the charge from one side of the furnace (11) . The connect...  
WO/2006/087212
The invention concerns a furnace system for melting down metallic or metal-containing feed material in which it is possible to pivotably place on a vessel bottom part (14, 15) of a furnace (A, B) an electrode arrangement with cover (6) f...  
WO/2006/087212
The invention concerns a furnace system for melting down metallic or metal-containing feed material in which it is possible to pivotably place on a vessel bottom part (14, 15) of a furnace (A, B) an electrode arrangement with cover (6) f...  
WO/2006/085789
The invention relates to metallurgy, in particular to a steel production in arc furnaces. The inventive method consists, in lifting, prior to the container emptying, the level of a metal input into an outflow opening, in maintaining said...  

Matches 251 - 300 out of 3,596