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Patent Searching and Data


Matches 701 - 750 out of 10,152

Document Document Title
WO/1997/005438A2
The invention concerns an arc furnace, in particular a d.c. arc furnace, comprising a vessel and a cover which lies thereon and has an opening for at least one electrode provided with a movement unit for vertical displacement. According ...  
WO1997002366A3  
WO1996041771A3  
WO/1997/002365A1
Method and apparatus for after-burning (post-combusting) of combustible gases contained above metal in a metallurgical smelting vessel. The apparatus includes an oxygen lance (12, 52) adapted to deliver jets (20, 22) of oxygen from an en...  
WO/1997/002364A1
Method and apparatus for post-combustion (after-burning) of the combustible gases present in a metallurgical vessel used for smelting metals. A swirling flow of an oxidizing gas emanating from a radiant injector (10) having a funnel-shap...  
WO/1997/002366A2
Method and apparatus for introducing oxidizing gas, e.g. oxygen into the atmosphere of an electric arc furnace to effect post combustion (after-burning) of gases in the atmosphere and provide a radiant heat source (18, 36) inside the fur...  
WO/1997/000413A1
A method for melting a batch in a furnace, particularly an electric furnace for melting scrap to produce steel, wherein melting energy is supplied to the load and fumes are post-combusted by injecting an oxygen-containing gas into the sp...  
WO/1996/041771A2
The disclosed cross-flame arrangement of cross-fired tank furnaces aims at a relative reduction of flame and roof temperatures in order to improve furnace performance and reduce nitrogen oxide. By partially deflecting fuel jets sideways ...  
WO/1996/041896A1
Method for improving the energy input during the heating and melting of a scrap bulk, in which a channel is burned into a scrap bulk and additional energy for the heating and melting of the scrap bulk is input through this channel, where...  
WO/1996/040373A1
A method and apparatus are disclosed for injecting vaporizable material, such as a vaporizable waste, into a molten bath. A gas is injected into the molten bath at a rate which is sufficient to cause the gas and the molten bath to form a...  
WO/1996/041028A1
An improved oxygen blowing/fuel burner lance assembly for introducing, at selected times, a flow of oxygen and/or carbonaceous fuel material into an electric furnace vessel. The lance assembly (10) includes a housing portion (14), a stra...  
WO/1996/036580A1
The melt (35) produced in a furnace (30) during the course of making a fused-cast refractory product is effectively treated with a beneficiating gas by injecting the gas in a substantially continuous manner through a tuyere (10) extended...  
WO/1996/034710A1
The invention relates to a method for measuring the amount of liquid metal contained in tiltable casting furnaces. It is established and maintained a reference curve for the amount of metal in the furnace as a function of the furnace til...  
WO/1996/034244A1
A furnace plant which comprises at least one furnace vessel (2) with side walls (21) and a bottom (22) and at least one heat source (31) which by radiation and convection heats molten metal and/or solid metal present in said furnace vess...  
WO/1996/032505A1
In order to profitably process various iron ores having different compositions, a plant for producing iron smelts (24), in particular steel smelts, such as crude steel smelts, has an electric arc furnace vessel (1) and a refiner vessel (...  
WO/1996/032616A1
The equipment reliability of a raw material retaining gate of a preheater is improved, the equipment cost is reduced, the effect of preheating the raw material by use of the waste gas is enhanced, and the melting electric power energy is...  
WO/1996/031627A1
A method and an apparatus for producing metals and metal alloys from metal oxides in a metallurgical vessel containing a molten bath having a metal layer and a slag layer is disclosed. The method is characterised by injecting a carrier g...  
WO/1996/030709A1
An apparatus for highly efficiently preheating and melting scrap, which comprises a scrap melting furnace having arc heating means or a top-blowing lance, and a device for introducing an exhaust gas generated from the scrap melting furna...  
WO/1996/029442A1
A method for heating vessels (1), e.g. galvanisation vessels, for molten metal baths (2), wherein use is made of at least one element (3) consisting of a substantially gas-tight and especially oxygen-tight heat-conducting refractory mate...  
WO/1996/028573A1
A method for producing steel in an electric arc furnace comprising a vessel containing a molten steel bath, a roof covering the vessel, and one or more roof electrodes inscribed within a cylinder. According to the method, an oxygen-conta...  
WO/1996/027412A1
A method and an apparatus produce a product in at least one phase from an organic component in a feed gas stream. The method includes forming a process zone including a process molten bath and a process gas space disposed over the proces...  
WO/1996/024698A1
A direct arc furnace for foundries has a hearth (6) and a lid (14) with at least one opening (22) through which an electrode (12) may be introduced into the furnace. A burner (26) is arranged in at least one opening (22) to melt away the...  
WO/1996/024697A1
An apparatus (1) for injecting gases or fluids in general and particulates, particularly for injecting oxygen, in furnaces for the production of steel. The apparatus comprises a structure (2) for supporting at least one injection lance (...  
WO/1996/022397A1
An apparatus and method for reclaiming metal chips formed while machining metal castings to their finished shape. The apparatus includes a stationary charging tube (100) extending in a generally perpendicular direction from the charge we...  
WO/1996/019592A1
The invention concerns a tilting metallurgical unit for smelting metallic material and for the subsequent treatment of the metal melt. The unit can tilt from an initial position in a positive tilt direction (8) about a tilting axis (7) a...  
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...  
WO/1996/017215A1
A non-oxidizing heating method and an apparatus therefor, in which a non-oxidizing gas of high temperature is continuously produced and supplied into a furnace while operations are repeated such that a plurality of regenerative heaters a...  
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...  
WO/1996/016189A1
The process is characterized by a step of addition of a material, which includes at least one polymer originating from hydrocarbon, to the batch to be melted; conveniently, said step occurs immediately before igniting the burner. The add...  
WO/1996/010097A1
The invention concerns a method of processing solid residues from waste-incineration plants, the method calling for the slag to be melted and heavy metals to be separated from the slag for recycling. The slag is transferred directly from...  
WO/1996/009511A1
A holding furnace (1) for supplying molten metal to a casting launder (11) is disclosed including a metal chamber (9), an outlet (7a) from said metal chamber and an inlet well (5) positioned on the holding furnace (1) on or adjacent to t...  
WO/1996/008584A1
A process and a steel making installation are disclosed for the metallurgical treatment of iron metals, in particular for producing molten steel. In order to carry out the metallurgical treatment of iron metals, in particular for produci...  
WO/1996/006954A1
A burner/injector (200) and method for providing a localized impingement flame or multiple flames for scrap heating and melting through use of a fluid fuel and at least one oxygen rich oxidizing gas. The burner/injector (200) includes a ...  
WO/1996/001967A1
A combustion assembly (A; A') for placing in one wall (5; 5') of a furnace (F), comprising at least one pair of burners (1, 1') burning a fuel/oxidant mixture, and an oxidant nozzle (3) between the burners of the burner pair, the axes (2...  
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...  
WO/1996/000799A1
A method and a device for directly feeding liquid metal into an electric furnace. A carriage carrying a ladle filled with molten metal is moved forward into a starting position adjacent the electric furnace then lowered and horizontally ...  
WO/1996/001033A1
An electric furnace for heating a metallic material contained in a crucible (120) which is positioned on a base (114). The electric furnace includes a sleeve (100), an electric heating element (106) disposed on the inner surface of the s...  
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...  
WO/1995/032025A1
Apparatus (10) and a method for vitrifying hazardous waste includes a melting vessel (12) into which hazardous waste is introduced for heating by a heater (38), and a metallic containment vessel (46) of the apparatus receives the melting...  
WO/1995/030778A1
A mass flow gravity feed furnace charger comprises a vertically-oriented elongated hollow conduit (51) which is associated with an apertured heat-resistant charge-well cover (30) adapted to lie essentially in contact with the upper surfa...  
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...  
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 ...  
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...  
WO/1995/017528A1
In steel-making there are conflicting processing requirements at different stages of the process. The method and apparatus of the invention creates different processing conditions at different stages of the process. Molten ferrous materi...  
WO/1995/016796A1
A loading device for feeding liquid metal into an electric furnace with a trough (15). The device includes a shelf (19) extending from the side of the trough (15) of the furnace (10) and linked to the bottom of the furnace (10).  
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...  
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 ...  
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...  
WO/1995/009518A1
The invention relates to electric melting technique, and particularly to technique where energy is dissipated by Joule effect in the melt from downwardly immersed electrodes. A support (8) for an electrode (1) of this type comprises a po...  
WO/1995/009336A1
This invention is provided with a furnace body (1) having an electrode (3) and adapted to melt scrap with arc heat, an air blow port (20) from which air is blown into the furnace body (1) via an air control valve (19), a carbon blow rate...  

Matches 701 - 750 out of 10,152