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WO/2009/038139A1 |
A process for molten-iron production which comprises: charging a solid reduced iron obtained by reducing carbon composite iron oxide briquettes with heating, a carbon material, and a fluxing agent into a melting furnace of the arc heatin...
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WO/2009/034586A1 |
The present invention relates to an injector (1) for an arc furnace (3). The injector comprises a head (10) suitable to face into the furnace and a body (20) suitable to support the head. The head and body are manufactured separately fro...
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WO/2009/028416A1 |
Disclosed is an iron bath type smelting reduction furnace having a side-wall lining made of two or more refractory materials, wherein each of the refractory materials is a MgO-C brick containing carbon in an amount of not less than 1 mas...
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WO/2009/019958A1 |
A method of suppressing slag forming in a continuous melting furnace, in which a molten metal in its stable state can be continuously produced by securely suppressing any slag forming through seizure of the state of slag forming in a con...
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WO/2009/018796A1 |
2.1 The invention relates to a device for slag-free tapping or for transferring a melt from a metallurgical vessel (1, 2, 3) into a different metallurgical vessel having a siphon-like, inverted U-shaped configuration, wherein the siphon ...
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WO/2009/016146A1 |
The invention relates to a cover (1) for a furnace (10) for receiving molten material (S), particularly metal. According to the invention, the cover comprises at least one layer (4, 4'') formed of a material having a heat transfer coeffi...
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WO/2009/010266A2 |
In exactly the same manner as larger furnaces, electric reducing furnaces which can be used for test purposes during ferroalloy and nonferrous processes and in a simplified design as industrial submerged arc furnaces require complete eng...
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WO/2008/154689A1 |
A lance for injecting a solid material into a vessel, such as a direct smelting vessel for producing molten iron, is disclosed. The lance has a core tube assembly comprising a passageway for solid material. The core tube assembly has an ...
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WO/2008/154688A1 |
An apparatus for injecting solid material into a vessel, such as a direct smelting vessel. The apparatus has a central tube comprising: a core tube assembly that defines a passageway for solid material, the core tube assembly having at l...
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WO/2008/136027A1 |
The present invention relates to a cooled box (1) for positioning nozzles (30) in arc furnaqes (2) . The box comprises a tubular body (10) which, in turnf comprises a plurality of ingots (20) that are mutually fastened and arranged such ...
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WO/2008/121630A1 |
An apparatus for melting an electrically conductive metallic material includes a vacuum chamber and a hearth disposed in the vacuum chamber. At least one wire-discharge ion plasma electron emitter is disposed in or adjacent the vacuum ch...
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WO/2008/103402A2 |
A quiescent melt handling system includes a holding furnace (2, 120, 320 - 720) for a molten metal melt. The holding furnace has a relatively large surface area and a relatively shallow depth, having a width to depth ratio in the range o...
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WO/2008/093042A1 |
The invention relates to a mixing chamber (10) for use in a metal transfer vessel (for example, a tundish used in steel manufacture or a holding furnace used in aluminium manufacture). The mixing chamber comprises a base with a first ser...
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WO/2008/058608A1 |
The invention relates to a metallurgical vessel (1), in particular an arc furnace, having a holding container (2) for metal melt and having a lid (3), by means of which the holding container (2) can be at least partially covered, wherein...
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WO/2008/052690A1 |
The invention relates to a method for the continuous or discontinuous extraction of a metal, or of multiple metals from a slag containing the metal, or a compound of the metal, wherein the liquefied metal containing slag is heated in a p...
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WO2008028573B1 |
To make the receiving space of the casing of a furnace variable, so that it can be adapted to the various volumes that are required for different feedstocks (light scrap, heavy scrap) to achieve the tapping weight envisaged for the furna...
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WO/2008/042997A1 |
A hearth furnace (10) for producing metallic iron material has a furnace housing (11) having a drying/preheat zone (12), a conversion zone (13), a fusion zone (14), and optionally a cooling zone (15), the conversion zone (13) is between ...
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WO/2008/042996A1 |
A hearth furnace (10) for producing metallic iron material has a furnace housing (11) with a drying/preheat zone (12) capable of providing a drying/preheat atmosphere for reducible material, a conversion zone (13) capable of providing a ...
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WO/2008/039047A1 |
This invention relates to nonferrous metallurgy, particularly, to the methods of continuous producing metallic titanium and metallic titanium alloys by the metallothermic reduction of titanium tetrachloride, and also to the devices for p...
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WO/2008/037836A1 |
The invention relates to a method for coating a cooling element (1) mainly made of copper, provided with water cooling pipes (2) and used particularly in connection with metallurgic furnaces or the like, wherein the cooling element inclu...
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WO/2008/021083A1 |
A method and apparatus for accessing a furnace melt are provided. Preferably, the method and apparatus provide for the safe and efficient access to the molten metal melt in a furnace. According to one aspect of the invention used in a st...
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WO/2008/017797A1 |
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...
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WO/2008/018807A1 |
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...
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WO/2008/009468A1 |
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...
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WO/2008/000608A1 |
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...
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WO/2007/147248A1 |
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...
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WO/2007/131459A1 |
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...
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WO/2007/124592A1 |
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...
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WO/2007/120028A1 |
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...
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WO/2007/106946A1 |
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...
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WO/2007/099941A1 |
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 ...
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WO/2007/093135A1 |
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...
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WO/2007/072253A1 |
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...
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WO/2007/054957A1 |
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...
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WO/2007/052494A1 |
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...
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WO/2007/052448A1 |
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...
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WO/2007/034138A2 |
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...
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WO/2007/019917A1 |
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...
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WO/2007/016752A1 |
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...
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WO/2007/017210A1 |
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...
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WO/2007/014519A1 |
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...
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WO/2007/009924A1 |
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 ...
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WO/2007/006558A2 |
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...
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WO/2006/131384A1 |
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...
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WO/2006/131372A1 |
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...
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WO/2006/125662A1 |
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...
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WO/2006/124422A2 |
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...
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WO/2006/117426A1 |
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...
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WO/2006/113969A1 |
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...
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WO/2006/111579A1 |
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...
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