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WO/2002/076905A1 |
The invention provides a colloidal refractory system for an electric arc furnace (100) or another pyrometallurgical converter having a hearth (114) a shell (102), and a roof (106). The colloidal silica refractory includes alumina having ...
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WO/2002/077297A1 |
Apparatus for transferring hot material between a preprocessing plant and an electric furnace has an enclosed housing extending between the plant and the furnace and within which a controlled atmosphere is maintained, at least one bin ha...
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WO/2002/071811A2 |
An electrode seal for an electric arc furnace comprises an annular support ring having an internal diameter substantially greater than the diameter of the electrode, and which is secured to the furnace roof by a plurality of mounting fee...
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WO/2002/068889A1 |
The invention relates to a refractory ceramic body serving as a wall part of a metallurgical melting vessel and to a metallurgical melting vessel whose wall area is partially formed by said refractory ceramic body.
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WO/2002/065585A2 |
A current-conducting arm (10) for conducting a current from at least one cable supports (9) to an electrode in an electric arc furnace comprising an arm housing (14) having a U-shaped base channel member (16) and a U-shaped top channel m...
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WO/2002/063927A2 |
A power control system for an AC electric arc furnace. The control system includes variable reactors located intermediate a furnace power supply and arc electrodes that are height adjustable. The control system monitors operating charact...
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WO/2002/058863A1 |
A bottom heated holder furnace (10) for containing a supply of molten metal includes a storage vessel (20) having sidewalls (22) and a bottom wall (24) defining a molten metal receiving chamber (26). A furnace insulating layer (32) lines...
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WO/2002/058864A1 |
A bottom heated holder furnace (12) for containing a supply of molten metal includes a storage vessel (30) having sidewalls (32) and a bottom wall (34) defining a molten metal receiving chamber (36). A furnace insulating layer (42) lines...
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WO/2002/058862A2 |
The melter furnace includes a heating chamber (16), a pump chamber (18), a degassing chamber (20), and a filter chamber (22). The pump chamber 818) is located adjacent the heating chamber (16) and houses a molten metal pump (30). The deg...
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WO/2002/057698A1 |
A method for conveying stacks of metallic sheets, in particular stacks of metallic cathodes, into a melting furnace. The stack of metallic sheets (1) is gripped by a grapple element (10), such asa lifting grapple, which is arranged on a ...
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WO/2002/039044A2 |
Melting furnace for leagues of metal of second melting especially conformed with a special type of channel of connection, with a rotating joint (7) among the cupola(1) and the basin of wait of spherical form (8) and able to ruotate, such...
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WO/2002/039043A1 |
The invention relates to a method for controlling the temperature of components or parts in high temperature metallurgical reactors. The components or parts are equipped with at least one evaporation cooled unit, which evaporation cooled...
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WO/2002/037044A1 |
The invention relates to a cooling element, in particular to be used in connection with furnaces and the like related to metal production processes, said element comprising a housing (1) provided with a channel system (2) for cooling wat...
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WO/2002/034693A1 |
The invention relates to a fire-resistant substance and to a method for producing a fire-resistant lining. The fire-resistant substance contains an MgO sinter and up to 5 wt. % of a reducing agent selected from the group consisting of su...
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WO/2002/033339A1 |
The invention provides an improved furnace structure and methods of melting material in furnaces, particularly aimed at reducing the start up time for such furnaces. The furnace (2) defines a container for the molten metal having a maxim...
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WO/2002/033130A1 |
The invention relates to a method for producing stainless steels, in particular steels containing chromium and chromium-nickel. The method is carried out in a melting device containing a metallurgical vessel, or in a melting device (1) c...
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WO/2002/028084A2 |
A system (10) is provided for recording information relating to the condition of electrodes (18) in an arc furnace (12). A digital camera (62) is provided in a consistent position relative to a photographing station (30). Periodically, t...
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WO/2002/024963A1 |
A direct smelting process for producing iron and/or ferroalloys is disclosed. The process operates on a commercial scale in a metallurgical vessel that has a hearth, side walls, and a roof, and a minimum width dimension of the interior o...
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WO/2002/014765A1 |
The invention relates to a bottom structure of a suspension smelting furnace to be used in a smelting furnace (1), in the reaction space (2) whereof of sulfidic raw material containing metal, such as copper, nickel or lead, is smelted in...
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WO/2002/008471A1 |
A direct smelting process for producing iron and/or ferroalloys on a commercial scale in a metallurgical vessel is disclosed. The process includes injecting solid feed materials into a molten bath via multiple solids injection lances (27...
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WO/2002/002827A1 |
The invention relates to a lance (1) for introducing treatment substances into a melt. According to the invention, the lance (1) consists of a spacing means (3) being provided between an outer jacket pipe (4) and an inner inlet pipe (2)....
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WO/2002/001190A2 |
This invention relates to a method and apparatus for improved process control in combustion applications, and particularly those relating to the steelmaking industry. An apparatus is provided for process control in a combustion applicati...
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WO/2001/099473A2 |
An induction-heated furnace is disclosed. The furnace comprises a shell lined with refractory material and has walls and a floor. At least one induction heater is located in the floor of the furnace, the induction heater communicating wi...
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WO/2001/096617A1 |
A method for observing the inside of a molten iron refining furnace which comprises using an inert gas and an oxidizing gas individually or in combination in correspondence to the situation of the opening of the front end of a single tub...
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WO/2001/090670A1 |
Spray cooled side wall and tap hole cover for an eccentric bottom tap (EBT) electric furnace which is unitary, i.e. piece, and has an inter-connected coolant supply and inter-connected spent coolant drain.
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WO/2001/079774A1 |
An electric arc gasifier adapts to the variable chemical components of waste products by utilizing mobile and fixed electrodes and a positioning system wherein a waste injection (9) combined with a carrier gas (9a) is injected into a hea...
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WO/2001/074738A1 |
A method for preparing a carbonaceous refractory, characterized in that it comprises providing a mixture comprising 50 to 85 % of a carbonaceous raw material as a main material comprising roasted an anthracite, a calcined coke, a natural...
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WO2000039514A9 |
A magnet for increasing a yield attained during a process in which, when separating metals from scraps occurring during a rare earth magnet production process, alloy materials for rare earth magnet are melt-refined so as to positively se...
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WO/2001/072634A1 |
The invention concerns a method for recuperating thermal energy of hot gases of a submerged-arc furnace designed to make metal alloys by atomization of a powder from solid particles suspended in an aqueous phase. The solid particles are,...
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WO/2001/073136A2 |
A process comprising: charging a raw material compacting substance containing a carbonaceous reducing agent and an iron oxide contained substance into a moving hearth type furnace; reducing the raw material compacting substance to a redu...
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WO/2001/071267A2 |
A method for manufacturing a cooling element comprising a housing part and ceramic lining elements arranged on the housing part surface. The ceramic lining elements (2) are connected to the element housing part (1) by using in the joint ...
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WO/2001/072090A1 |
A metal alloy such as steel is manufactured in an electric arc furnace system equipped with at least one sensor (20), at least one controller (24) comprising a logic program, and a variable valve (18) in fluid communication with an elect...
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WO/2001/064962A1 |
The invention relates to a device for producing steel. The inventive device comprises a container (1, 101, 201). The metal used is molten, blown and refined in said container which comprises an upper component (5, 205) having at least on...
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WO/2001/063192A1 |
A cooling element designed particularly for furnaces, said element comprising a housing (1) mainly made of copper, and a channel system (6) provided in the housing for cooling medium circulation. At least on a part of the surface of the ...
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WO/2001/061260A1 |
The present invention is for a method for heating of blanks and other heating of metallic materials in a furnace before working where heat is transferred to a blank in the furnace by radiation. According to the method of the invention an...
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WO/2001/058816A1 |
An inductively heated drain tube fashioned of high temperature, electrically conducting materials is disclosed. An inductor (11) surrounds the drain tube (12). The inductor and drain tube are cast within a refractory material (14). The d...
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WO/2001/060123A1 |
A cooled mounting block (14) for an arrangement of a supersonic burner or lance (10) used in an electric arc furnace is designed to rest on a step (24) between a water-cooled side wall (23) and the hearth (21) of the furnace. The mountin...
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WO/2001/047656A1 |
The invention concerns a novel smelting furnace for molding, comprising a nozzle for charging which connects with a liquid metal storage tank, an outlet nozzle starting at said tank and leading to a taphole of the molds, wherein an addit...
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WO/2001/046479A1 |
The invention relates to a method for feeding a gas to a metallurgical vessel, the gas carrying a component in the gaseous and/or liquid state that can be condensed or evaporated. The gas is fed to the metallurgical vessel via one or mor...
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WO/2001/040728A1 |
A metallic water jacket of an arc furnace is provided with aluminium-diffused permeable coating formed by calorizing. The coating is 200-800 microns thick and it has an aluminium concentration of 10-50% by weight at its surface.
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WO/2001/037619A1 |
To re-ignite efficiently an arc-furnace arc extending between an electrode and a material to be melt, a second energy supply is provided to maintain a plasma link between the electrode and the melting material when the arc-furnace arc is...
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WO2000075588B1 |
The aim of the invention is to provide a means of also cooling the lower part of electric arc furnaces and/or resistance furnaces. To this end, said lower part - the actual melting vessel (4) - is surrounded with a jacket (9) at a certai...
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WO/2001/021843A1 |
The invention relates to a method for introducing bulk material into a metallurgical vessel, especially for introducing scrap into an arc furnace, which has at least one centrally situated electrode in an upper vessel part that is gas-ti...
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WO/2001/022017A1 |
An apparatus for clearing dust accretions in connection with a smelting furnace, particularly in the contact area between the uptake shaft and waste heat boiler of a flash smelting furnace. The apparatus comprises a wall element (1) arra...
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WO/2001/018271A1 |
The refining hearth (70) comprises an open vessel defining a first deep zone (78) having a predetermined depth, a second deep zone (82) having a predetermined depth, and a shallow zone (80) intermediate the first deep zone (78) and the s...
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WO/2001/014598A1 |
A method and apparatus for simultaneously supplying varying proportions of hot and cold direct reduced iron (DRI) material from a source of hot DRI for melting, storage, briquetting or transport. The system uses gravity to transport hot ...
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WO2000061823B1 |
In order to impede entrainment or trailing of molten slag (1) while tapping molten metal (2) from a metallurgical vessel (5) having a tap hole (1) in the bottom (13) of said vessel, the molten slag (1) is blown away from the surface of t...
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WO/2001/006021A1 |
A melting plant is provided for the production of molten metals, and in particular steel, primarily from metallic scrap or similar. The plant comprises a furnace with a closed furnace vessel (1) and at least one fuel burner (9, 10). The ...
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WO/2001/004559A1 |
An arc melting equipment for cold pig iron source which does not require a transfer and feed device for cold pig iron source to a melting furnace, enables preheating of the next charge of cold pig iron source, and provides an extremely h...
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WO/2001/004064A1 |
The present invention relates to a process and apparatus to cast and form slag directly from the molten state into crystalline or amorphous products suitable for use as decorative and structural building and construction materials. Molte...
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