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WO/1991/016460A1 |
The invention concerns a metallurgical vessel, in particular a vessel for use in the manufacturing of steel, with walls (4) having a refractory lining (3) with a basic main layer (7). In order to give a long-lasting lining, the invention...
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WO/1991/016459A1 |
The invention concerns a metallurgical vessel, in particular a transfer ladle or treatment vessel, with a floor (2b) having a refractory lining (3) with a basic main layer (5). In order to give a long-lasting lining, the invention calls ...
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WO/1991/015604A1 |
This invention relates to the refining of steel external to a primary steelmaking vessel, for example in the ladle. More particularly, it is: A) a method of synthesizing a slag on the steel that (i) mitigates the detrimental effects of e...
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WO/1991/013037A1 |
The invention includes a tunnel-type heating furnace (10) of modular construction for heating glass sheets (11) carried therethrough in succession on a series of aligned rollers (79). The furnace enclosure includes a lower section (14) o...
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WO/1991/013306A1 |
A reaction furnace (11) includes a rotating core (64) within a heated shell, the core and shell defining an active annular zone (50). An interrupted helical screw (55) carried by the core conveys material from an inlet at one end of the ...
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WO/1991/012103A1 |
A process for renewing the refractory lining of steel-casting foundry ladles and similar metallurgical vessels is disclosed. While the ladle (10) is still hot, the slag (S) still adhering to the inner surface (26) is melted off the remai...
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WO/1991/012477A1 |
The furnace (70) includes a heating element (72) which is restrained from growth during operation of the furnace (70) by retaining spacers (84) which provide a yoke (88) around the individual coils (102) of the heating element (72) and w...
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WO/1991/010788A1 |
An invention comprised of two expansion joints (A and B), an intermediate element (C) between the same and a transmitter (D) fastened to the intermediate element, by means of which construction a joint is kept closed under all working co...
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WO/1991/010872A1 |
A collecting pit (1) for receiving molten metal and cooling water in the event of defects in devices for smelting or heating metal has a drainage made from granular bulk material (5), in particular slag granules, and perforated covering ...
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WO/1991/006683A1 |
For the metallurgical treatment of a metal melt (1) in a metallurgical smelting and fining vessel (3), free-flowing additives (43), especially lime, are added in granular to powder form at least during part of the fining stage in the upp...
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WO/1991/001418A1 |
The invention herein teaches a kiln crown system for the high temperature firing of materials. One means used in industry for a kiln crown system consisted of using an inverted "T" rail (11) comprised of a suitable ceramic material attac...
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WO/1990/015161A1 |
A device for removing worn nozzle bricks or nozzle linings from the tap holes of metallurgical vessels comprises a spreading device (20), which can be introduced into the nozzle brick or tap hole, and a drive for extracting the nozzle br...
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WO/1990/012932A1 |
The invention relates to a corner joint for building units of stone, especially of soapstone, for furnaces or the like to join two units (1, 2) cornerwise to each other by using a binding hook (3) extending from one stone unit (1) to ano...
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WO/1990/012666A1 |
A metallurgical vessel (1) to be lined, whose internal walls are relatively hot, is placed on a suitable support. The support is tilted and the metallurgical vessel (1) brought successively into several different positions in each of whi...
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WO/1990/011153A1 |
The machine comprises means (1) for receiving the mixture of products constituting the coating, means (6) for directing the mixture towards the lower part of the machine, means forming a handling chamber (8) for distributing the mixture ...
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WO/1990/008933A1 |
The invention relates to a shield (3) for electromagnetic agitators (1) to protect such agitators against high temperatures, spill and spatter of liquid metal or slag, and against mechanical strain. The shield is dismountable and is buil...
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WO/1990/008297A1 |
A furnace for high temperature, for example a glass furnace, is insulated thermally by arranging layers of material on the interior wall of the furnace shell. On the layers ceramic fibre material and a heat reflecting surface layer are a...
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WO/1990/005886A1 |
A cooling panel which is intended to be positioned at the slag line of a tiltable steel-smelt arc furnace of the kind which is fitted with three electrodes, and in which the three electrodes give rise to three regions which are subjected...
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WO/1990/005198A1 |
A metallurgical ladle (10) including a steel shell (22) and refractory brick lining (14) includes a refractory brick retaining ring (52) formed in segments (50) from a ceramic material, with the segments (50) being releasably secured to ...
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WO/1990/002610A1 |
In a process for intermittently spraying a setting pasty composition mixed with a tempering liquid, in particular for building up fireproof linings of metallurgical vessels, the composition is conveyed from a preparing station (6) at whi...
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WO/1990/002041A1 |
The invention provides a molded heat insulator made of carbon fiber felt spirally wound to form layers with a carbide present therebetween to integrate the layers substantially without any undulations therebetween. Also provided is a pro...
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WO/1989/008811A1 |
This invention relates to a method of constructing and shaping a converter steel tapping port incorporating therein a refractory material and a molten metal outflow port of a vacuum degassing furnace, etc., or method of repairing the bre...
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WO/1989/008230A1 |
The furnace comprises a lined working chamber (1) with sheathing (2), heaters (4) located under the furnace roof, a metal guide (5) for delivering the metal and a running magnetic field inductor (9) mounted outside the working chamber (1...
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WO/1989/005430A2 |
The invention concerns a mechanically connected multipart object, in particular a vacuum apparatus component. In order to improve the heat flow between the contacting surfaces of individual parts, thin-layer, flexible, compressible eleme...
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WO/1989/005431A1 |
Proc�d� et moyen d'isolation thermique de l'ouverture dans une chambre thermique, par exemple un four � recuisson (S), comprenant l'application d'un couvercle (C) comportant un rev�tement int�rieur de fibres c�ramiques (F) so...
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WO/1989/005285A1 |
Disclosed herein is a foamable, self-setting ceramic composition which can be poured into molds or injection-molded or extruded to achieve desired shapes, and thereafter optionally fired to produce shaped, porous ceramic articles useful ...
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WO/1989/001921A1 |
A ceramic composition comprising clay, feldspar, grog, silica talc and whiting or alternatively a composition comprising ball clay, flint clay, kaolin, fine grog and carbon black for use as a thermal ceramic material in an oven. An oven ...
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WO/1989/001596A1 |
Disclosed herein is an apparatus for spraying coating material into the interior of a torpedo vessel comprising a spar (28), a boom (32) attached to the inner end (30) of the spar, a rotary spray head (86) mounted on the end of the boom,...
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WO/1988/009472A1 |
Lining element (1) for heat treatment furnace comprises lining material (2), wherein fibers are directed mainly parallely to planes (A) which are perpendicular to interior furnace wall. The said lining material is pierced transversally t...
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WO/1988/009109A1 |
A plasma feed nozzle (3) for a furnace (1) which has a tubular mixing chamber (7) open at one end to the furnace (1), a plasma torch (13) which provides superheated gases axially to the central portion of the mixing chamber (7), a shroud...
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WO1988008831A1 |
Ceramics having excellent resistance against fusing damages due to molten metal or other inorganic material are disclosed. When in contact with a molten material such as molten metal or glass, members made of conventional boron nitride (...
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WO/1988/006263A1 |
A method for spray-working refractory composition solves the problems encountered in conventional dry or wet spraying method. The novel method comprises previously mixing a refractory composition with 1/5 to 3/4 of water necessary for th...
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WO/1988/006145A1 |
A heating furnace in which a porous glass material for optical fiber, which consists of fine quartz glass particles, is heat-treated in a fluoride-containing gaseous atmosphere so as to add fluorine thereto and make it transparent and ob...
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WO/1988/002786A1 |
A tuyere for torch guniting of a metallurgical plant lined with a refractory material comprises a cooled casing inside which pipelines (3, 4) for supplying oxygen and the gunite mass into the cavity of the plant. The tuyere further compr...
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WO/1988/001721A1 |
A high-temperature resistant blast pipe is primarily intended for delivering gas, such as oxygen, and, when appropriate, solid material to metallurgical processes, and incorporates a layer of refractory material comprising a refractory m...
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WO/1988/001720A1 |
A building element for dry or heat treatment devices has a hollow body and a joining piece that links the hollow space of the body with the outside. The building element has a prism-shaped body with two form-fitting surfaces suitable to ...
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WO/1988/000680A1 |
Gunning apparatus (10) to be lowered as a unit into a refractory vessel has a conduit (20) for refractory material depending from a housing (12), the conduit being rotatable relative to the housing about a generally vertical axis and the...
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WO/1988/000245A1 |
A tuyere for torch guniting of a metallurgical plant comprises a water-cooled casing (1) inside which are mounted a pipeline (2) for feeding the gunite powder and a pipeline (3) for feeding oxygen into the cavity of the metallurgical pla...
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WO/1988/000322A1 |
The refractory lining of e.g. a runner channel eroded by contact with molten metal is speedily repaired by milling the lining to break up residues and removing the milled off pieces and dust. The residues on the floor are first loosened ...
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WO/1987/007913A1 |
The method is intended for guniting of a metallurgical plant the walls (13) and the bottom (14) of which are lined with a refractory material. The method consists in directing one portion of oxygen, in the form of a jet, to the zone of t...
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WO/1987/007914A1 |
Method of torch guniting of a metallurgical plant providing for directing to the refractory lining of the plant a gunite torch consisting of a guniting mass, a fuel and oxygen. Simultaneously the gunite torch is influenced with a wave en...
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WO/1987/007695A1 |
Thermal contact with high transfer coefficient between two materials which may have different expansion coefficients, the thermal contact being characterized in that it is comprised of expanded graphite inserted between said materials wh...
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WO/1987/007186A1 |
A method for spray applying refractory fiber to a surface (16). An alumina containing binder, preferably aluminum chloride, is used in a spray method to bond the fiber to itself and to a substrate surface. A refractory layer (17) compris...
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WO/1987/003325A1 |
Reactor shielding wall dismantling apparatus provided with a support (2) disposed in such a manner as to extend from the upper portion of a reactor to its bottom, an upper support means (3) for supporting the upper part of this support (...
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WO/1986/005481A1 |
A granular, plastic, carbon-containing refractory composition keeping workable for at least two months after the date of supply, for the lining of vessels for liquid steel such as casting ladles and transport ladles, by way of ramming, s...
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WO/1986/004478A1 |
Industrial oven to receive an electric heating system, in which at least two bars (28) are made of temperature-resistant material, these being located at a distance from one another and at a distance from the side-walls (12), and to rece...
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WO/1986/002991A1 |
A device for fixing to a support wall a fibre insulation element comprises a metal part (1) consisting of a first portion (2, 3) capable of penetrating into the module (11) according to a direction parallel to the support wall, preferabl...
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WO/1986/002436A1 |
To reduce the amount of coolant needed relative to a pressurized furnace cooling system a spray cooling system for the sidewalls and/or roof of a furnace is provided. In the invention, spray headers and pipes (14, 16 and 18) supply coola...
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WO/1986/001279A1 |
A method and apparatus for waste heat recovery and reduction in industrial furnaces and heating equipment. The method of heat recovery comprises directing the exhaust gases through a system of channels (8) inside the refractory wall wher...
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WO/1986/000880A1 |
A furnace comprises a basin (1) of a refractory masonry filled with a melt glass mass (4) and current leading elements (7 and 7a), located in the masonry and coming out on its working surface under the level of the melt and above it. The...
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