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| Number | Title | Issue Date |
| 7731892 | Pit furnace closing system A PIT FURNACE CLOSING SYSTEM is provided having two beams laid across the border of the furnace and square iron bars supported over the beams, and pieces of cloth wrap for high temperature are used for closing the furnace or a box in a stainless steel screen, folded... | 06/08/2010 |
| 7591976 | Nozzle for use in continuous casting Disclosed is a continuous casting nozzle having a refractory portion formed to contain a dolomite clinker and arranged to define a surface region adapted to be in contact with molten steel, which is capable of protecting a working surface of the nozzle from alumina ... | 09/22/2009 |
| 7273582 | Shaft and post assemblies for molten metal apparatus An apparatus for moving a stream of molten metal comprising a pumping member, a housing at least partially enclosing the pumping member, a power device seated on a support, and a shaft connecting the power device and the pumping member. At least one post is disposed... | 09/25/2007 |
| 7083147 | Modularized insulation, systems, apparatus, and methods Modularized insulation blanket for thermal and/or acoustical insulation. The modularized insulation blanket has a cover formed of a distal layer and proximal layer in sealed mated relationship. The distal and proximal layers are sealed along longitudinal and latitud... | 08/01/2006 |
| 6858175 | Bottom structure for a smelting furnace 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 the presence o... | 02/22/2005 |
| 6787098 | Refractory lining for metallurgical vessel A lining for a bottom of a metallurgical vessel, comprising an impact pad having a plurality of close-packed, pre-formed, high-temperature, high-density refractory bricks, the pad having an upper impact surface, and a monolithic slab of a high-temperature refractory... | 09/07/2004 |
| 6742699 | Method for manufacturing a cooling element and a cooling element 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 between the lin... | 06/01/2004 |
| 6645425 | Refractory batch, in particular for the production of a shaped body, and process for producing the shaped body The invention relates to a refractory batch containing at least one refractory metal oxide component, at least one binder component, such as resin or pitch, if appropriate antioxidants, at least one carbon carrier, such as soot and/or graphite, and reinfo... | 11/11/2003 |
| 6627143 | SiC--C/C composite material, uses thereof, and method for producing the same SiC--C/C composite materials having a suitable kinetic coefficient of friction, good corrosion resistance in strongly oxidizing and corrosive environments, good creep resistance and spalling resistance, and high hardness. The materials are hardly oxidized... | 09/30/2003 |
| 6576185 | System and method for hydrothermal reactions-three layer liner A system and method for performing hydrothermal treatment includes reactor vessel formed with a pressure bearing wall surrounding a reactor chamber. A liner protects the wall from exposure to temperature extremes, corrosives and salt deposits. The liner i... | 06/10/2003 |
| 6559082 | Insulating refractory material The invention concerns a crack-free insulating refractory material made from a composition comprising 20-80% by weight of a ceramic matrix, 5-40% by weight of insulating microspheres, 0.5-15% by weight of one more binders, 5-20% by weight of a metal or a ... | 05/06/2003 |
| 6533993 | Variable height liner system A melting liner for an induction melting furnace includes an integral foot portion for locating a lip portion of the melting liner in a convenient position for pouring molten metal.... | 03/18/2003 |
| 6533994 | Alkaline, refractory ceramic hollow item The invention relates to an alkaline (basic), refractory ceramic hollow item.... | 03/18/2003 |
| 6528011 | Colloidal silica refractory system for an electric arc furnace The invention provides a colloidal refractory system for an electric arc furnace or another pyrometallurgical converter having a hearth, a shell, and a roof. The colloidal silica refractory includes alumina having a range of about 55 percent through about... | 03/04/2003 |
| 6485675 | Bottom for a metallurgical vessel with a direct current electric arc device A base of a metallurgical vessel having a direct-current arc device whose cathode projects into the vessel and in whose fire-resistant lining on the base at least one anode is arranged, one end of which, passing through the vessel wall, touches metallic m... | 11/26/2002 |
| 6475426 | Resin-bonded liner In the continuous casting of molten metal, the invention describes a refractory article for reducing deposition of inclusions on a surface contacting the stream of molten metal. The article comprises a first composition and a second composition on at leas... | 11/05/2002 |
| 6464932 | Unburned carbon-containing refractory material and vessel for molten metal An unburned carbon-containing refractory suitable for lining a molten metal container, which can prevent deformation of the outer steel shell, improve the life of the container, suppress reduction in molten steel temperature, and minimize energy losses wi... | 10/15/2002 |
| 6443216 | Thermal jacket for a vessel An apparatus for and method of controlling the cooling rate of a metallic melt in the production of a semi-solid slurry billet for use in a casting process. The apparatus comprises a thermal jacket including symmetrical halves, with each half having a rou... | 09/03/2002 |
| 6428743 | Trough having an erosion-resistant precast shape The invention includes an article and method for creating an erosion-resistant surface in a trough adapted to receive molten metal. The article includes a trough having a working lining and a pre-cast shape anchored at an erosion zone. The working lining ... | 08/06/2002 |
| 6426037 | Dosing chamber method and apparatus A dosing chamber is insertable within and removable from the metal holding chamber of a molten metal furnace and is not formed as an integral part of the refractory lining of the molten metal furnace. The dosing chamber includes a chamber shell having a g... | 07/30/2002 |
| 6355206 | Sic-C/C composite material, uses thereof, and method for producing the same SiC--C/C composite materials having a suitable kinetic coefficient of friction, good corrosion resistance in strongly oxidizing and corrosive environments, good creep resistance and spalling resistance, and high hardness. The materials are hardly oxidized... | 03/12/2002 |
| 6328926 | Method and apparatus for quick-heating pouring tubes and nozzles A method of preparing a pouring tube such as a submerged entry nozzle (SEN) for use in a continuous casting machine includes steps of preheating at least one portion of the pouring tube by exposing the pouring tube to intensive radiative heat transfer; an... | 12/11/2001 |
| 6234790 | Refractory wall structure Refractory wall structure for a blast furnace, in particular for a metallurgical furnace, such as for example a blast furnace with a high process temperature during operation, which wall structure is subjected to a high thermal loading. The wall structure... | 05/22/2001 |
| 6221312 | Refractory wall, metallurgical vessel comprising such a refractory wall and method in which such a refractory wall is applied Refractory wall structure, suitable in particular for use in a metallurgical vessel for a continuous production of crude iron in a smelting reduction process under conditions of an extremely high thermal load in a highly abrasive environment of molten sla... | 04/24/2001 |
| 6168753 | Inert pump leg adapted for immersion in molten metal A graphite support leg for positioning an object, such as a pump, in a bath of molten metal. The leg is enclosed in a ceramic sleeve, and an inert material is disposed in a clearance between the leg and the sleeve to protect the leg from the heat of the m... | 01/02/2001 |
| 6024259 | Impregnated ceramic riser tube and method of manufacturing same A riser tube for transfer of molten metal therethrough, including a porous ceramic substrate having a hollow cylindrical structure and ceramic impregnant material penetrating into pores of the substrate and plugging at least a portion of the surface pores... | 02/15/2000 |
| 6017487 | Lid of preformed refractory material for metallurgical melting furnace A lid for a melting furnace includes preformed refractory side panels in the form of circular sectors and a center panel in the form of a circular or octagonal closure. The side panels are inclined upward and inward from support provided by a lid ring enc... | 01/25/2000 |
| 5885520 | Apparatus for discharging molten metal in a casting device and method of use A nozzle or tube which is useful for pouring molten metal, especially aluminum killed molten steel. The nozzle is formed from a blend of doloma and graphite which is bonded together in a carbonized matrix. Nozzles or tubes made in accordance with this inv... | 03/23/1999 |
| 5858261 | Continuous casting nozzle for casting molten steel The invention is related to a continuous casting nozzle for casting of aluminum killed steel without clogging of the bore of the nozzle. The surface layer of the bore of the continuous casting nozzle contacting with the molten steel is formed of a refract... | 01/12/1999 |
| 5849245 | Well brick of vessel for molten metal The present invention relates to a well brick or a tuyere brick for receiving a nozzle brick or a porous brick for injecting gas which is disposed on the bottom of a vessel for molten metal. A well brick is disposed on a bottom of a vessel for molten meta... | 12/15/1998 |
| 5766542 | Refractory bricks for iron ore reduction reactors Refractory materials (typically refractory bricks) having the exposed working surface treated to form a silica sand glazed surface for their utilization in iron ore reduction reactors, for example of the moving bed type, fluidized bed type, rotary kilns, ... | 06/16/1998 |
| 5728348 | Ladle cover for vacuum refining process Ladles used for vacuum refining processes, for example a VOD process, are provided with covers to cover openings of ladles. The covers generally consist of refractories, which are required to have excellent resistance to thermal spalling due to heat cycle... | 03/17/1998 |
| 5686029 | Procedure for manufacturing fire-proof crucibles for steel-processing ladles The procedure for manufacturing fireproof crucibles for steel-processing ladles, in which aluminum deoxidation is carried out for the total quenching of liquid steel, is such that a monolithically hardening fireproof mass with a proportion of silicon diox... | 11/11/1997 |
| 5562879 | Cast refractory base segments and modular fiber seal system for single-stack annealing furnace A rigid ceramic refractory base for a single-stack annealing furnace is assembled atop a base support structure utilizing a novel set of cast refractory segments, including a pair of C-shaped inner segments and four arcuate outer segments. Defined between... | 10/08/1996 |
| 5516734 | Aluminum nitride refractory materials and methods for making the same The present invention broadly relates to novel aluminum nitride matrix ceramic composite bodies for use as refractory materials and methods for making the same. The refractory materials are useful in environments which are corrosive, erosive, abrasive and... | 05/14/1996 |
| 5501431 | Melting furnace for residues from waste incineration plants A melting furnace for melting residues from refuse incineration plants, in particular filter dust melting furnaces, contains a furnace substructure and a furnace superstructure lined with different refractive material compositions. The lining in the subst... | 03/26/1996 |
| 5485986 | Furnace with in situ foamed insulation and process for its manufacture The invention relates to a furnace having an inner wall, an outer wall and a heat insulation arranged in between. The heat insulation is foamed up in situ, and hardened, from a mass which contains, per 100 parts by weight of a reactive solid (stone-forming com... | 01/23/1996 |
| 5483548 | Insulated furnace door and wall panel system An energy efficient wall panel for use together with other such panels to extend about selected peripheral portions of a thermal treatment chamber of a high temperature industrial furnace or the like includes a frame that supports an array of elongate cas... | 01/09/1996 |
| 5423519 | Regenerative chamber lining and method of installation A continuous checker column is molded and formed in situ inside a regenerative chamber, thereby eliminating the need for large numbers of individual, preformed checker bricks. A plurality of rigid molding rods or flexible cable rods are passed through, or... | 06/13/1995 |
| 5377959 | Apparatus for improving service life of thermite rail welds In the heat treatment in the field of a thermite weld between rail ends, the rail ends and the weld are enclosed within a containment filled with an aluminothermic material mixture. The mixture is ignited and the rail ends and the thermite weld are heat-t... | 01/03/1995 |
