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Patent Searching and Data


Matches 701 - 750 out of 10,042

Document Document Title
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/1996/017215A1
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/1996/017091A1
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/1996/017092A1
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/1995/016336A1
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/1995/016335A1
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/1995/010929A1
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/1995/009336A1
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...  
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/1995/004250A1
A pushing machine is described, which is capable of running to opposite directions, upon remote control, along a length of rail provided in front of the mouth or slag hole of an electric furnace (10) for the smelting of iron products. It...  
WO/1995/000671A1
A method and apparatus for controlling slag in a trough of a tilting furnace or in a free-standing tilting vessel. The apparatus (10) has a reservoir (36) for receiving a flow of molten metal and slag. The reservoir has a slag opening (5...  
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...  
WO/1994/025814A1
A method for heating a mass (10) in a partial vacuum, said mass being placed in a closed heating chamber (3), and a first wall area of said heating chamber being connected (5) to a suction source (6). At a distance from said first wall a...  
WO/1994/024060A1
A device for processing waste, particularly hospital waste, comprising a gasification chamber (1) into which waste is fed so that it can be degassed and burnt, a post-combustion chamber (2) for burning gas from the gasification chamber, ...  
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...  
WO/1994/024506A1
This apparatus is provided with a throat (38) which has at one end thereof a raw material inlet port (37) connected to a furnace body (2), and which extends in the diagonally upward direction, a heat exchanger (39) formed on the upper si...  
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...  
WO/1994/022785A1
A high strength graphite material is fabricated into a sheet, the sheet is bent into a tube, and the tube is retained in that shape for use in a high temperature furnace. The retained tube is rigid and can replace prior art machined bloc...  
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...  
WO/1994/020791A1
A guiding flue (10) of refractory material is arranged at the exit of the slag exhaust hole (7) of a plasma fusion furnace (1) to guiding exhaust gas (5) in the downstream direction of the flowing slag. The slag which flows down by the s...  
WO/1994/019497A1
Method and apparatus for producing iron by melt reduction of concentrate or prereduced concentrate in a melt bath in a reactor, e.g. a converter (10). Concentrate and carbonaceous reducing agent are supplied to the melt bath consisting o...  
WO/1994/014983A1
A tilting device for a direct current arc furnace and a process are disclosed for completely emptying the furnace while the furnace is operated with continuous scrap supply through a lateral opening (15) in the furnace vessel (1) and rem...  
WO/1994/013840A1
A flow control device (20, 32, 52, 82) comprising a baffle plate (28, 46, 58, 88) and a plurality of dividers (30, 48, 56, 89) radially disposed about a nozzle (22, 34, 54, 84) through which liquid is to be discharged and adapted to spac...  
WO/1994/010348A1
A process and device are disclosed for melting scrap in a direct current-driven closed shaft furnace. The scrap is fed in a ring area at the furnace end, the hot gases which flow against the falling scrap are sucked below the scrap feedi...  
WO/1994/009332A1
In a scrap conveyor (2) for feeding a scrap to a processing furnace (1) such as an arc furnace, etc., while pre-heating the scrap by an exhaust gas from the processing furnace, the periphery of the scrap conveyor is covered with a gas se...  
WO/1994/003029A1
An incinerator (10) for the disposal of biohazardous waste has a sealed enclosure (12) defining a combustion chamber (18) with upper, first and second level intermediate, and lower portions (19, 20, 21, 22). The upper chamber portion (19...  
WO/1994/000400A1
The invention concerns a refractory ceramic compound for lining the floors of electric-arc furnaces, the compound consisting of a refractory matrix material containing a certain proportion of finely divided metallic iron.  
WO/1993/024665A1
A method is disclosed for melting copper without incorporating unwanted oxygen and/or hydrogen into the copper by effectively controlling the burners (16) used to melt the copper within desired fuel/air ratio operating limits by employin...  
WO/1993/020252A1
The invention concerns a method for the processing free-flowing materials, in particular filter dusts from the iron and steel industry and waste-incineration plants, as well as a device for carrying out the method. In order to ensure tha...  
WO/1993/017131A1
The invention relates to a process for desulphurising irons melts with minimal slag production, and a suitable device therefor. In the process, a slag with the chemical analysis (I) and impurities arising from the raw material is taken t...  
WO/1993/015860A1
A method and apparatus for controlling slag in a tilting furnace (12). The apparatus (24) is mounted on a trough (22) extending from the furnace tap hole and has a reservoir (36) for receiving the flow from the trough (22). The reservoir...  
WO/1993/013228A1
A process is disclosed for melting scrap, in particular from cars. The charge is introduced in pieces or batches by means of a charging tube (3) that extends through a closed lid (2). Electrodes (15) for heating the molten bath are excen...  

Matches 701 - 750 out of 10,042