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WO/1997/038140A1 |
A liner (32) and lining method for a vertical shaft metallurgical vessel (30). The liner (32) includes a working lining (50) within the shell of the vessel (38) and a secondary lining (42) exhibiting fluid properties, such as a dry-vibra...
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WO/1997/036141A1 |
An end cap (26) is provided for adjacent pipes (24) in the cooling coils (22) of an electric air furnace (10). Each end cap (26) includes parallel opposite side walls (28) and a curved end portion (30) connecting the side walls (28). The...
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WO/1997/035150A1 |
A refractory brick (10) and system of bricks for constructing flue walls of a ring furnace (13). The brick and the bricks of the system have opposed sides and upper and lower surfaces when disposed in a vertical wall structure, with one ...
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WO/1997/030006A1 |
The invention concerns a lining for furnaces, mills or containers, said lining comprising at least one cover layer and at least one carrier layer which are interconnected such that they adhere firmly by ceramic bonding as the result of t...
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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/1997/027335A1 |
A ladle brick leveling set (20, 21) for high temperature molten metal ladles in which specially shaped refractory bricks are disposed in a slightly sloping geometrical configuration so as to compensate for a sloping bottom (19) of a high...
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WO/1997/021965A1 |
This invention relates to a panel for furnaces, which are intended to be used when smelting steel by means of so-called high-temperature processes, the panel being intended to be an integral part of wall constructions and/or ceiling cons...
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WO/1997/011802A1 |
Water is kneaded into a predetermined dry composition to give an aqueous slurry which is then pumped through a pipe (12) to a nozzle (13) into which compressed air is injected in order to spray said aqueous slurry. The aqueous slurry is ...
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WO/1997/009577A1 |
A ceramic tile (50) is mounted to the wall of an incinerator (16) or other high temperature and/or corrosive environment with a stud assembly that includes a threaded stud (54) and a ceramic T-nut (56). The ceramic T-nut (56) thermally s...
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WO/1997/005215A1 |
A coke oven wall (4) comprising a plurality of bricks (38, 42, 46, 120) laid so as to define first and second wall faces (40, 44), and plurality of flue cavities (14) extending therein characterised in that at least part of the wall is m...
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WO/1997/003322A1 |
The invention relates to an erosion resistant wall assembly, particularly for use in high temperature and abrasive environments, such as the water cooled metal roof structures (20) of cyclone separators (24) for circulating fluidized bed...
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WO/1996/040602A1 |
This invention relates to an apparatus comprising: a) an article having a composition selected from the group consisting of graphite, carbon/carbon, carbon/graphite, and mixtures thereof, and b) a ceramic coating thereon, wherein the cer...
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WO/1996/037632A1 |
A nozzle for blowing a gas into a molten metal in a stable manner without causing the leakage of gas from its periphery, which has a simple structure and a long life, so that it does not require frequent replacements. The gas blowing noz...
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WO/1996/036578A1 |
The invention concerns a use for a water-containing fire-resistant ceramic cast material based on a hydration-sensitive metal oxide such as MgO and containing carbon, a dispersing agent and a reactive silicic acid for forming a monolithi...
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WO/1996/035915A1 |
This invention relates to a new type of brick for heat exchangers. The brick (1) consists of a refractory material, having inside vertical channels (2) and outside vertical channels which are separated by straight edges (4), inclined fro...
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WO/1996/034994A1 |
A method and mandrel apparatus (55) for making a unibody containment structure, such as a crucible (40) formed of PBN, having a negative draft (B), via chemical vapor deposition.
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WO/1996/035091A1 |
A unibody, monolithic, one-piece negative draft crucible (40) for an MBE effusion cell. The crucible maximizes capacity, uniformity and long term flux stability, and minimizes oval defects, depletion effects, and short term shutter-relat...
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WO/1996/033959A1 |
A microporous, carbon-bound SiC moulded body with granular SiC, secondary SiC and a secondary silicium compound is useful as inwall brick for blast furnaces and as susceptor for heating ceramic, non-electroconductive moulded bodies, inor...
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WO/1996/033380A1 |
The invention concerns a process for fitting a gas-injecting nozzle in the wall of an installation. The process is characterized in that: an external supporting surface (11) whose shape matches the so-called internal supporting surface (...
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WO/1996/028702A1 |
In revolving hearth furnaces for annealing cylindrical or tubular materials (5), these materials are set into semicircular radial recesses that prevent them from rolling sideways. In time, wear causes these recesses to work themselves in...
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WO/1996/027570A1 |
An intermediate layer (12) is formed on the outer surface of a part (10) made of a carbon-containing heat-resistant composite material, and a metal shell is formed by casting molten metal (22) around the part having said intermediate lay...
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WO/1996/021132A1 |
In order to provide a nozzle, such as an angular fan nozzle, or a nozzle system for high temperature reactors with fire-resistant linings so that the nozzle can be easily replaced, a replaceable nozzle (1) or a nozzle-replacement system ...
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WO/1996/017968A1 |
The present invention provides a method and an oven (10) of heat-treating an oxygen-sensitive workpiece. In the invention, an oven (10) has an oven chamber (50) and an outer housing (12), with an enclosure (80) being defined therebetween...
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WO/1996/016917A1 |
A process is provided producing a crystalline siliceous refractory mass by projecting solid refractory particles, solid silicon particles and gaseous oxygen against a surface in such a way that reaction between the silicon particles and ...
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WO/1996/016918A1 |
A process and apparatus for making a ceramic article, especially pipes and tubes of ceramic material such as silicon carbide, in which the article is formed by projecting a ceramic powder mixture comprising refractory particles and combu...
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WO/1996/011371A1 |
Heat insulating arrangement comprising a plurality of hollow members (10, 12) which have a generally inverted U-shaped cross section. The members (10, 12) can be arranged together to provide an insulation arrangement usable for example o...
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WO/1996/010657A1 |
The present invention relates to an arrangement in a wall (14), which wall defines a space containing an abrading flow (16), and in which wall there is formed a coating (12) on a metallic supporting surface by metal-spraying on a surface...
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WO/1996/008452A1 |
The invention concerns the use of a reactive refractory mortar which is self-extinguishing beyond a predetermined penetration depth. The mortar consists of a mixture of 11 to 17 dry wt % aluminium powder, 18 to 31 dry wt % iron oxide, 8 ...
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WO/1996/001700A1 |
A method for placing a thixotropic low-cement castable refractory material without the necessity for forms. A low-cement castable material is mixed with a measured amount of water, then is pumped hydraulically through a hose (13) to a no...
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WO/1996/000307A1 |
In a seal apparatus (3) disposed at an inlet and/or an outlet of a zone of a heat-treatment furnace using an atmosphere gas containing a hydrogen gas for effecting heat-treatment such as annealing, strain relieving annealing, etc., under...
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WO/1995/035267A1 |
A composite and monolithic refractory structure, particularly adapted for making furnaces for glassmaking or the like, constituted by a block-shaped component made of electro-cast refractory material based on oxides of aluminum zirconium...
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WO/1995/033964A1 |
Dual electric/gas heating in a crucible melting furnace with segmental lining, and linings and segments of linings for same.
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WO/1995/033521A1 |
Combustion of leakage gas caused by spark due to static electricity is quickly and positively detected and counteracted outside and near a sealing device provided at inlet/outlet of a compartment of a continuous heat treatment furnace or...
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WO/1995/031418A1 |
A glazing layer is formed on the surface of an oven refractory by applying thereto a glaze having a melting point of 900 �C or below and comprising, on the oxide basis, 0-10 wt.% of Li2O, 0-10 wt.% of B2O3, 10-40 wt.% of R2O (wherein R...
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WO/1995/029263A1 |
A device is disclosed for introducing a lance (2) into a metallurgical vessel (4). The lance (2) is moved in the direction of its longitudinal axis (13) by means of a centring device (25, 26) for introducing the lance (2) into the metall...
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WO/1995/029264A1 |
In a process and device for keeping an opening (1) that extends through a wall (2) of a metallurgical vessel (3) free from deposits, a stopper (15) is inserted into the opening (1) when the opening is not in use. In order to immediately ...
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WO/1995/028501A1 |
During the servicing of lining of rooms such as steelmaking converters, furnaces, chimneys and the like, there can be risks for the servicing crew, mainly due to the fall of part of the lining and/or of the masonry and/or of incrustation...
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WO/1995/027617A1 |
The disclosed invention provides a method of forming refractory linings for maintaining refractory linings against attack by corrosive materials such as those present in steel manufacture. The method entails spraying an aqueous mixture o...
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WO/1995/026324A1 |
A powdered mixture of chemicals for forming a refractory composition, including a filler consisting of refractory particles, metal particles and metal peroxide containing particles, wherein the metal peroxide containing particles have a ...
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WO/1995/025610A1 |
Water is kneaded into a predetermined dry composition including inorganic particles, a surfactant and a binder to give an aqueous slurry which is then pumped through a pipe (12) to a nozzle (13) into which compressed air is injected in o...
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WO/1995/023122A1 |
A self-sintered silicon carbide/carbon-graphite composite material having interconnected pores which may be impregnated, and a raw batch and process for producing the composite material, is provided. The composite material comprises a de...
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WO/1995/023199A1 |
A method for repairing industrial facilities at high temperatures using at least one prefabricated element (1) made of a mullite-crystallised refractory product with an alumina content of 30-85 %, preferably 50-80 %, made of refractory m...
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WO/1995/022732A1 |
A wall lining for a furnace (10) includes a refractory layer (14) having a hot face (16) exposed to the interior of the furnace. A plurality of elements of a high thermal conductivity material (18), such as copper wires or rods, extend f...
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WO/1995/022666A1 |
A refractory brick (28) of the present invention comprises a body (34) substantially in the form of a rectangular parallelepiped having 1st and 2nd opposite side faces (36, 38), 1st and 2nd opposite end faces (40, 42), a top face (44), a...
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WO/1995/021364A1 |
When the wall and bottom of a steel casting and handling ladle are provided at the same time with a refractory monolithic lining, the lining in the lower area of the wall is often damaged during intermediate repairs of the bottom. Accord...
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WO/1995/021363A1 |
It was difficult until now to carry out intermediate repairs of monolithic refractory lining walls of steel casting and handling ladles when the slag area of the lining was worn before other areas. According to this new process for recon...
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WO/1995/018187A1 |
A refractory system for a reactor for producing carbon black. The system comprises a plurality of refractory bricks having an elongate axis arranged to provide at least one path through which a gas can flow. The path extends substantiall...
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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...
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WO/1995/016888A1 |
A sealing device used for preventing the risk of explosion or fire caused by the electrostatic spark occurring at the sealing section of doorway of a partition using flammable gases liable to cause explosion or fire in a continuous annea...
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WO/1995/016795A1 |
The invention comprises hoppers (28) containing spray material, spray machines (30) at the bottom of the hoppers (28), a hose (36) conveying the material from the spray machines (30) to an automatic spraying machine (34) inside a furnace...
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