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WO/2020/113336A1 |
A method and system for stabilizing electrical power for arc furnaces and their power supplies. The method comprises causing a load to absorb power in response to determining a loss of arc event of an arc furnace electrode. After the ele...
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WO/2020/109941A1 |
This invention relates to a lining and cooling arrangement for a metallurgical furnace. The arrangement includes a layer of refractory bricks located adjacent a furnace shell of the furnace, the layer of refractory bricks having a hot si...
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WO/2020/104903A1 |
A method of operation for a slag door component cooling system includes coupling a cooling element with a component of a slag door of a metallurgical furnace. The method additionally includes generating a flow of at least one of gas or m...
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WO/2020/099910A1 |
The invention proposes a furnace (1 ) for the production of ferrochromium alloys, including: a base (10), and side walls (11) defining an internal basin (12), a base surface (10a) inside the basin (12), an external lateral surface (11a),...
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WO/2020/101359A1 |
The present invention relates to a molten material treatment method and a molten material treatment apparatus used therefor, the molten material treatment method comprising the steps of: charging a receptacle, which has an open top part,...
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WO/2020/096157A1 |
The present invention relates to a device for controlling the end position of an oxygen lance in an electric furnace and, specifically, comprises: an oxygen lance; a lance driving part vertically driven so that the end of the oxygen lanc...
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WO/2020/091975A1 |
An apparatus is disclosed for a spray-cooled roof of a tilting metallurgical furnace having a drain pump. The spray-cooled roof has a hollow metal roof section. The hollow metal roof section has an outer metal covering member, an inner m...
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WO/2020/084076A1 |
The invention relates to a gas injection member having a tubular wall (3) that is able to be thermally stressed and having a proximal end and a distal end (11), at this distal end, at least one end opening through which at least one gas ...
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WO/2020/083579A1 |
The invention relates to a system (100) for melting down scrap (5), comprising a melting furnace (50), and comprising a conveying device (10) for feeding the scrap (5) between an input region (17) for inputting the scrap (5) onto the con...
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WO/2020/080027A1 |
Provided is a melting and holding furnace which, by means of a relatively simple configuration, is able to suppress the formation of oxides, thereby increasing production efficiency and reducing the running cost. This melting and holding...
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WO/2020/064891A1 |
The invention consists primarily in a multi-shelf furnace (1), intended for thermally treating a charge of material M, comprising at least one rabble arm (5) secured to a rotary shaft, above each shelf (3) of the furnace, and comprising ...
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WO/2020/065134A1 |
The invention is directed to briquetting metal oxide dusts and fine material with cement-based binders. After this the briquettes can be fed into arc furnaces for ferrochrome production through already existing inlet systems.
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WO/2020/063671A1 |
Disclosed is a method for smelting low nitrogen steel using an electric furnace. The smelting is performed using a dual-shell electric furnace. The dual-shell electric furnace has two shells. An electric-arc power supply system of the du...
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WO/2020/056485A1 |
An optically based combustion off-gas stream velocity sensor assembly is provided for detecting in real-time off-gas flow velocity and/or volume as it moves through a flue duct. The sensor assembly includes two paired coherent light emit...
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WO/2020/060661A1 |
A deployable manufacturing center (DMC) system [10] includes a foundry module [12] containing a metallurgical system configured to convert a raw material into an alloy powder [48], and an additive manufacturing (AM) module [14] containin...
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WO/2020/051023A1 |
Apparatuses for interfacing with an electrode provided with a melting furnace including a vessel and an electrode. In some embodiments, a support assembly (50) supports the electrode outside of the vessel, and includes a cart (102) or si...
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WO/2020/041031A1 |
Method and apparatus for monitoring operation of a melting furnace including a vessel and an electrode. A leading face of the electrode is open to a melting chamber of the vessel. An electromagnetic radiation input signal is delivered to...
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WO/2020/037103A1 |
A molten metal pumping apparatus. The apparatus has each of a circulation function and a transfer function. The apparatus includes a molten metal pump having an outlet. The outlet is moveable while submerged in molten metal between a fir...
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WO/2020/016702A1 |
Process and plant for preheating a metal charge (11) fed in continuous to an electric melting furnace (12) through a preheating tunnel (16) provided with a horizontal conveyor (13), wherein said metal charge (11) is hit, in countercurren...
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WO/2020/011904A1 |
Apparatus (1) and process for melting metal feedstocks (E), wherein the apparatus (1) comprises: a furnace vessel (10) for receiving and melting the feedstocks (E), whereby the furnace vessel (10) contains a charge (F) during operation; ...
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WO/2019/235474A1 |
The present invention relates to an immersion heater for non-ferrous molten metal and provides an immersion heater the service life of which can be extended even when the temperature of heating elements of SiC heaters contained therein i...
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WO/2019/224613A1 |
An electrode (1) for electric metallurgical furnace comprises an electrode body (2) made of electrically conductive material, preferably copper or copper alloy, extending between a head end (21) and a tail end (22) along a longitudinal d...
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WO/2019/214507A1 |
A comprehensive processing method and comprehensive processing system for copper-containing sludge and circuit boards, the comprehensive processing method comprising: mixing and granulating copper-containing sludge and waste-activated ca...
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WO/2019/207611A1 |
Electric power method for an electric arc furnace (11), which provides to regulate the electric power frequency (fa) of a power voltage (Ua) and a power current (la) of the electrodes, independently from the mains frequency (fr).
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WO/2019/207609A1 |
Melting method comprising a step of loading solid metal material (M) into an electric furnace (11), a step of generating an electric arc between at least one electrode (13) and the metal material (M), a step of perforating the metal mate...
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WO/2019/203096A1 |
A top-bottom-combined blown converter-type refining vessel characterized in that: in the shape of a throat as viewed in the direction of a furnace body central axis, the outline of the throat comprises an arc and a line segment, wherein ...
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WO/2019/186256A1 |
The present disclosure relates to a method of detecting crack propagation in a wall of a metallurgical furnace by a detection unit. The detection unit is configured to extract one or more dominant frequency parameters from the correspond...
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WO/2019/185728A1 |
The invention relates to a pneumatic slag stopper for pneumatically sealing a tap hole channel (18) of a metallurgical vessel in relation to an outlet of slag by means of at least one gas flow introduced from at least one gas outlet open...
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WO/2019/185865A1 |
A process for smelting a metalliferous feed material to form a molten metal in a smelting apparatus, with the apparatus including (i) a smelting vessel that is adapted to contain a bath of molten metal and slag and (ii) a smelt cyclone t...
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WO/2019/175245A1 |
A stave protection system for a metallurgical furnace comprises: a stave (100) comprising a plurality of recesses (110) arranged on a front face (102) of the stave (100); and a plurality of inserts (200) each being received by a respecti...
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WO/2019/178122A1 |
A metal scrap submergence device comprising an open top chamber including walls of a heat resistant material, an inlet positioned in the chamber, an outlet positioned in the base of the chamber, and a ramp adjacent the side wall of the c...
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WO/2019/175244A1 |
A stave protection system for a metallurgical furnace comprises: a stave comprising a front face having an X direction and a Y direction which is perpendicular to the X direction such as to define an X-Y plane, the front face comprising ...
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WO/2019/170699A1 |
The invention relates to a metallurgical smelting unit (1) comprising at least one sidewall (2) having at least one injector opening (3), at least one injector housing (4) having an outlet opening (5), which housing is arranged on the in...
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WO/2019/170650A1 |
The invention relates to an improved apparatus for producing steel, comprising a lower furnace (hearth part), an annular, water-cooled, fireproof lined cylindrical upper furnace, on which an upwardly closing conically tapering hat having...
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WO/2019/173729A1 |
The present invention relates to a waterless system and method for cooling a metallurgical processing furnace. Supercritical carbon dioxide (sCO2) is used as a coolant, as opposed to water, which provides several advantages. For example,...
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WO/2019/171146A1 |
The invention provides containers with lower vibrations, such as quaking and shaking as well as noise effects, known also as hooting, honking or howling, and an effective and cost-competitive method and device to decrease such phenomena ...
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WO/2019/159023A1 |
A sill device (1) for a slag door in a metallurgical furnace comprises a base metal body (2) extending mainly around a longitudinal axis (X) from one inlet end (21) to one outlet end (22) and a cooling fluid inlet port (IN) in the vicini...
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WO/2019/147447A1 |
A furnace system (12) includes a mixing chamber (17) that receives separate streams of raw material and cullet mix and discharges a combined stream. The mixing chamber tapers from an inlet end (24) to an outlet end (26). One inlet (36, 3...
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WO/2019/140819A1 |
A method for designing an electrode diameter and a furnace shell shape of a two-phase DC fused magnesia furnace, comprising: designing the structure of the two-phase DC fused magnesia furnace system; calculating an arc power distribution...
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WO/2019/139695A1 |
Sensors measure magnetic field components, and the measured fields are used to calculate and estimated transverse position of a longitudinal electric current flowing as an electric discharge across a discharge gap. Based on the estimated...
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WO/2019/123574A1 |
A device (101) for managing loss of refractory material in electric furnaces derives the relationship between time and thermal flux of a furnace wall inner face (5a) by analyzing the unsteady heat transfer inverse problem on the basis of...
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WO/2019/122614A1 |
The invention relates to a furnace for melting vitrifiable material, in particular glass, said furnace having a submerged burner and a wall that is cooled by a cooling fluid, the wall surface facing the interior of the furnace comprising...
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WO/2019/124006A1 |
The method for producing a glass article is provided with a glass-melting step for continuously melting a glass raw material Gr in a glass-melting furnace 1 by ohmic heating (electrical heating) by an electrode 11 to form molten glass Gm...
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WO/2019/115655A1 |
A method of controlling a metal melting process in a gas furnace (3) with a control system (2), the gas furnace comprising a furnace chamber (9) enclosed by walls (5a, 5b, 5c) and a door (7), gas burners (11) configured to heat the metal...
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WO/2019/116333A1 |
A melting furnace (1) for metallurgical plant comprising a vessel provided with a bottom (2); a tapping duct (3) passing through the bottom (2); rotation means to rotate the vessel so that the tapping duct (3) passes from a first referen...
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WO/2019/117408A1 |
The present invention relates to an aluminum continuous melting furnace, and more particularly, to an aluminum continuous melting furnace that is capable of continuously melting a material (ingot, etc.) for manufacturing a product using ...
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WO/2019/096808A1 |
The invention relates to a method for producing a metal melt (1) in a furnace (2), in which metallic material is melted in the working space of the furnace (2), wherein material to be melted is fed into the working space of the furnace (...
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WO/2019/091994A1 |
Melting furnace (1), in particular for producing metal alloys by melting alloying constituents, comprising a melting crucible (10), a cylindrical electrode rod (40) with a consumable electrode (41) attached thereto and a power supply (50...
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WO/2019/084674A1 |
A configuration of switches added to a line control circuit allows for switching back and forth between a configuration featuring a series-connected thyristor switch and reactor and a configuration featuring a parallel-connected thyristo...
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WO/2019/082762A1 |
This electric furnace is provided with: one or more upper electrodes; one or more bottom-blowing tuyeres; a mechanical agitator including an impeller; and a feeding device for feeding an iron oxide-containing iron raw material.
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