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WO/1998/048229A1 |
Apparatus for mounting in or on a furnace comprises fluid circulation means defining a fluid circulation path, having first and second path portions adapted, in use, to lie towards the exterior and interior of the furnace respectively.
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WO/1998/043030A1 |
When operating an electric furnace, each electrode is surrounded by an open-ring duct, placed on the furnace roof and fixed with respect thereto, from which pressurized water is delivered, with different angles with respect to the electr...
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WO/1998/042164A1 |
The invention relates to a method for regulating or controlling a fusion process in a three-phase current arc furnace with at least three individual electrodes, which are independent of one another and have an adjustable height. At least...
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WO/1998/029572A1 |
An electric arc furnace (10) having a partially insulated electrode (37) produces molten metal (28) such as foundry iron from an iron source where little or no slag (30) is produced. The furnace (10) includes at least one insulated elect...
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WO/1998/027790A1 |
A novel process and apparatus for the thermal partitioning of heterogeneous feedstock (11) for the production of a metal product, a glass ceramic product and a gaseous product. The process includes the capability for thermal treatment of...
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WO/1998/026245A1 |
An arc furnace which includes a shell with a hearth, a roof for the shell, the roof including a plurality of segments (10, 11) which are substantially electrically isolated from each other and from the shell, an electrode (12) and a refr...
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WO/1998/009481A1 |
A novel apparatus for providing three-dimensional positioning to the ends of a translating element which is normally restricted to translation along the element axis. A cartridge assembly formed from a cylindrically shaped ceramic holds ...
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WO/1998/000568A1 |
An arc furnace has a furnace vessel, a furnace inner chamber and at least one electrode (4) that projects into the furnace inner chamber. The furnace is characterised by an electrode receiving chamber (5) accessible from one side of the ...
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WO/1997/050153A1 |
The invention discloses a device for electrically connecting an electrode, in particular of a metallurgical furnace, comprising a multiplicity of contact plates (3) arranged at the periphery of an electrode, an annulus (5) arranged at th...
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WO/1997/049266A1 |
Slag from a pool of molten slag (34) floating on molten metal in a plasma arc treatment chamber (36) is removed by providing a slag container (38) located inside the chamber which has a slag intake pipe (40) extending from a bottom of th...
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WO/1997/031232A1 |
An electric furnace assembly comprises an electric arc furnace (1) with an electrically conducting furnace bottom (3), at least two electrodes (2) and a number of power sources (6) equal to the number of electrodes, each power source com...
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WO/1997/029617A1 |
An electrode and a cooling element for a metallurgical vessel are disclosed with at least one cavity (18) and at least one cooling device (10, 12, 13) for spraying a cooling medium in this cavity. The invention is characterised in that a...
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WO/1997/013610A1 |
The invention pertains to the creation of permanent joints, specifically to soldering and welding using a light beam. The proposed device comprises a reflector in which are arranged electrodes (cathode and anode) in electrode mounts; a c...
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WO/1997/006653A1 |
A bottom electrode for an arc furnace operated with direct current consists of two parts made of different materials that may be joined to each other. One wearing part made of a material that is comparable to the molten mass is arranged ...
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WO/1997/000740A1 |
A process and device are disclosed for straightening metal parts, in particular sheet metal, sections and/or constructions made of sheet metal or sections. The flame of an indirect plasma arc is brought into contact with the surface of t...
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WO/1996/038691A1 |
The invention pertains to the field of power engineering and can be used for firing and stabilising the combustion of low-grade coals. According to the invention, two streams are formed from the fuel which is to be fed in for burning, na...
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WO/1996/038311A1 |
The surface of a workpiece is cleaned by generating a steady-state one atmosphere glow discharge plasma above the surface of the workpiece. The use of one atmosphere, uniform glow discharge plasmas generated by a low frequency RF ion tra...
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WO/1996/034988A1 |
A submerged arc furnace (10) produces foundry iron from scrap iron and steel sources where little or no slag is produced. Scrap iron or steel is fed into the submerged arc furnace (10) with a source of silica and a carbonaceous reducing ...
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WO/1996/033389A1 |
An arrangement for determining the height position of a vertically movable electrode (2) in an arc furnace (1). The arrangement includes an elongated, flexible element (9), preferably a heavy chain, whose one end is attached to a first a...
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WO/1996/027275A1 |
This invention relates to a method for continuous production of a self-baking carbon electrode in direct connection with the smelting furnace wherein the electrode is consumed. Blocks of a first unbaked carbonaceous electrode paste is su...
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WO/1996/027276A1 |
The present invention relates to a method for production of carbon electrodes where a first unbaked carbonaceous electrode paste containing a binder which cures at a temperature below 500 �C is supplied to an annulus between a curing c...
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WO/1996/024441A2 |
The present invention provides a relatively compact self-powered, tunable waste conversion system and apparatus which has the advantage of highly robust operation which provides complete or substantially complete conversion of a wide ran...
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WO/1996/023394A1 |
In order to create a plasma stream, use is made of symmetrically configured electrode elements (1), the number of said elements being a multiple of two and not less than four; the elements are connected in pairs to a direct current sourc...
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WO/1996/017091A1 |
A direct current arc furnace (2) for metallurgical purposes has two or several electrodes (10) arranged on the furnace vessel (5) that project into the furnace vessel (5). In order to prevent arc deflection caused by the force of magneti...
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WO/1996/017092A1 |
A smelting installation has a current supply network connected to a direct current arc furnace. In order to use a surrent supply network with a relatively low short-circuit rating, the invention associates a direct current arc furnace wi...
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WO/1996/012247A2 |
A method and apparatus for processing a greyscale input of an image, particularly of a shipping label, into a binary output image in which foreground information is segmented from the background information and contrasts between adjacent...
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WO/1996/008210A1 |
The invention concerns an arc melting and casting device (10) having a housing which comprises a melting chamber (14) and a casting chamber (16). The melting chamber (14) is disposed above the casting chamber (16) and is connected theret...
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WO/1996/008943A1 |
Electrical power supply unit comprising electrical connection means for connecting an electrical power source to at least one device using electrical energy. The device is characterized in that the electrical connection means (6) compris...
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WO/1996/003849A1 |
The invention relates to a self-baking carbon electrode produced in direct connection with the furnace wherein it is consumed. The electrode comprises an outer casing made from an electrical conducting material, and having inner radial, ...
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WO/1996/000877A1 |
An electric arc furnace for melting scrap iron is to be of the simplest possible design while preventing thermal loads on the side walls caused by the electrodes and damage to the electrodes during charging. The electric arc furnace is d...
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WO/1996/000489A1 |
A method and a furnace for melting a solid material to form an electrocast product, including at least two electrodes (4, 5). According to the method, the melting process is started by contacting the tops (13) of the electrodes (4, 5) wi...
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WO/1995/027084A1 |
The invention relates to a base electrode of a d.c.-heated metallurgical vessel, especially for making a ferrous alloy, having a metal jacket coated with fireproof material. In order to ensure the widest possible electric contact and thu...
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WO/1995/026253A1 |
An ignitable material (26) is positioned in contact with a slag (8) contained in a plasma arc treatment system having an electrode (10) and an electrical ground (14). The slag is initially at a temperature below a conducting temperature ...
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WO/1995/026118A1 |
A method in the control of a three-phase electrode furnace, especially an electric arc furnace, comprises the steps of controlling the electrodes on the basis of impedance or resistance desired values and impedance or resistance actual v...
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WO/1995/023947A1 |
The invention relates to a charging device for closed arc furnaces with at least one electrode, especially for melting scrap. In order to be able to lay the charge in the furnace head in a predetermined quantity, time and location, accor...
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WO/1995/018076A1 |
A glaze composition for refractory materials which comprises at least one lead free and barium free borosilicate, borophosphate or phosphate glass frit having a dilatometric softening point of below 600 �C; aluminium powder or an alumi...
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WO/1995/017801A1 |
An electrode seal for arc furnaces, particularly arc furnaces for steel making, has a first element in the form of a water cooled copper sleeve lining an aperture in the furnace roof for passage of an electrode, the sleeve having an uppe...
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WO/1995/016335A1 |
A submerged arc furnace with an open slag bath, in particular for melting powdery or fine grained batches, has a vertically movable frame arranged above the furnace closed by a cover. An electrode mount and an electrode filling device ar...
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WO/1995/016336A1 |
The invention pertains to a process and device for regulating the position of the tip of an electrode immersing in an electric furnace heated by electric arc or resistance heating. To measure with precision the position of the electrode ...
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WO/1995/012962A1 |
A lightwave oven (10) cooking method and apparatus using pulsed power to a plurality of high power lamps (18a-18e, 16a-16e) provides visible and near-visible wavelength radiant energy wherein power is applied to the lamps (18a-18e, 16a-1...
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WO/1995/012963A1 |
A static converter circuit (10), including an inductive or mechanical energy store (11), is connected in series with the electric arc furnace (6). During normal operation of the furnace the static converter operates with slight terminal ...
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WO/1995/010929A1 |
A bottom electrode for a metallurgical vessel driven with direct current consists of two parts made of different materials that may be interconnected. A coolant is applied on the part arranged outside of the bottom of the vessel and turn...
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WO/1994/028568A1 |
A steady-state glow discharge plasma is generated at one atmosphere of pressure within the volume (S) between a pair of insulated metal plate electrodes (14) spaced up to 5 cm apart and rf energized with an rms potential of 1-5kV at 1-10...
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WO/1994/026938A1 |
The object of the invention is a direct current electric furnace for melting a ferrous raw material such as scrap iron, comprising a vessel (1) closed by a removable cover (13), at least one consumable electrode (5) passing through at le...
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WO/1994/026446A1 |
Method to create three-dimensional bodies (30), for example models, formers, finished products, semi-finished products, among others, from a medium (12) consisting of particles, by producing a number of cross-sectional layers (25), each ...
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WO/1994/024503A1 |
This invention is provided with a furnace body (2) having a bottom electrode (1) at a lower portion thereof, a furnace cover (3) provided so as to close an upper portion of the furnace body (2), a raw material inlet port (25) formed in t...
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WO/1994/024504A1 |
A cover (3) for a furnace body (2) is connected to each of two upper electrodes (16, 17) which extend through the portions of the furnace cover (3) which are spaced horizontally from each other by a predetermined distance. The upper elec...
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WO/1994/022279A1 |
An arc furnace (1) has an electrode (13) and connection members (14) for connection to a power-supply network (20) for supplying an arc (16) at the electrode with current. The furnace is provided with a voltage-pulse generating member (3...
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WO/1994/016993A1 |
A process and device are disclosed for producing carbon Buckminster fullerenes from carbon-containing solid raw materials. Fullerenes may be produced by evaporating carbon-containing bulk materials in the form of solid raw materials from...
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WO/1994/006184A1 |
A polyphase alternating current is applied in the order of its phases to the discharge electrodes arranged on the vertices of a regular polygon. In the space surrounded by the electrodes, discharge such as corona discharge, glow discharg...
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