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| Number | Title | Issue Date |
| 8110142 | High yield ladle bottoms A refractory bottom for a metallurgical vessel comprised of a bottom lining having a bottom surface that is dimensioned to overlay a bottom of a metallurgical vessel and an upper surface. The upper surface is comprised of a plurality of discrete sections that includ... | 02/07/2012 |
| 7708935 | Float bath bottom refractory brick and process for its production A process for producing a float bath bottom refractory brick which can suppress a reaction with Na2O from glass at the surface of the refractory brick and thereby prevent flaking phenomena, which process comprises adding a potassium compound to a clayey m... | 05/04/2010 |
| 7468157 | Impact pad for metallurgical vessels An impact pad for a bottom lining of a metallurgical vessel, such as a ladle. The impact pad reduces wear to side walls of the metallurgical vessel by controlling the flow of an incoming stream of molten metal to minimize splashing and turbulence. The impact pad inc... | 12/23/2008 |
| 7128247 | Fire resistant ceramic part The invention relates to a fire resistant ceramic part which can be embodied in the form of an impact pot or a casting gutter and has the following characteristics:—a base (10);—at least two walls (12, 14) which extend from opposite sections (10... | 10/31/2006 |
| 7056469 | Starter set for brick lining of ladles used in handling molten metal A lining for a ladle used to handle molten metal. The lining is comprised of a first course of like, refractory bricks arranged horizontally in the ladle, the first course having an upper surface. A second course of like refractory bricks is arranged to spiral withi... | 06/06/2006 |
| 6997361 | Metallurgical impact pad A tundish impact pad formed from refractory material comprising a base having an impact surface which, in use, faces upwardly against a stream of molten metal entering a tundish, a wall extending upwardly from the base around at least a part of the periphery of the ... | 02/14/2006 |
| 6916502 | Systems and methods for coating conduit interior surfaces utilizing a thermal spray gun with extension arm Systems and methods for applying a coating to an interior surface of a conduit. In one embodiment, a spray gun configured to apply a coating is attached to an extension arm which may be inserted into the bore of a pipe. The spray gun may be a thermal spray gun adapt... | 07/12/2005 |
| 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 |
| 6427610 | High temperature industrial furnace roof structure A refractory hanger brick for high temperature industrial furnace roof construction having an elongated upwardly extending refractory portion having a generally rectangular cross section and a lower refractory base portion having a generally rectangular l... | 08/06/2002 |
| 6110416 | Tundish for continuous casting of metals having at least one plasma torch for reheating the metal An annularly shaped piece (28) formed from refractory material is provided for a tundish (1) for continuous casting of metals for enclosing a plasma torch (18) for heating liquid metal (4). The interior wall (29) of the annularly shaped piece defines a sp... | 08/29/2000 |
| 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 |
| 5882583 | precast module leveling assembly for a metallurgical vessel An interconnected precast module refractory leveling assembly for a metallurgical vessel is disclosed. The precast modules of the instant invention compensate for the sloping bottom of a metallurgical vessel. At least one precast module is disposed in eac... | 03/16/1999 |
| 5824263 | Ladle brick leveling set A ladle brick leveling set 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 of a high temperature molten metal ladle.... | 10/20/1998 |
| 5800775 | Refractory block slag dam A dam surrounding a slag tap on a refractory covered, boiler-tube floor for holding back a protective slag layer. The dam is comprised of a plurality of adjacent refractory blocks mechanically secured to the refractory covered, boiler-tube floor near the ... | 09/01/1998 |
| 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 |
| 5756043 | Cast refractory base segments and modular fiber seal system for plural-stack annealing furnace A rigid ceramic refractory base for a plural-stack annealing furnace--such as an eight-stack furnace that has two "four-stack rows" or "halves" arranged side by side--is assembled atop a base support structure utilizing a novel set of cast refractory segm... | 05/26/1998 |
| 5704184 | Impact pad for ladles A refractory brick that has a rear portion with a geometrical concavity on one side and a corresponding convex projection on the other side, the concavity and projection being matched so that the concavity mates with the corresponding projection of a simi... | 01/06/1998 |
| 5681525 | 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... | 10/28/1997 |
| 5578264 | Cast refractory base segments and modular fiber seal system for plural-stack annealing furnace A rigid ceramic refractory base for a plural-stack annealing furnace is assembled atop a base support structure utilizing a novel set of cast refractory segments, including spaced pairs of C-shaped inner segments that each are surrounded by a sub-set of o... | 11/26/1996 |
| 5575970 | Cast refractory base segments and modular fiber seal system for plural-stack annealing furnace A rigid ceramic refractory base for a plural-stack annealing furnace is assembled atop a base support structure utilizing a novel set of cast refractory segments, including spaced pairs of C-shaped inner segments that each are surrounded by a sub-set of o... | 11/19/1996 |
| 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 |
| 5562880 | Refractory brick design for open end of refractory lined vessel A vessel for very high temperature materials having an upper terminus with an annular surface and at least one refractory abutting the inner surface of the vessel and extending across the annular surface and an embodiment wherein a wedge-shaped member abu... | 10/08/1996 |
| 5499798 | Refractory retaining apparatus An improvement is provided in apparatus for retaining refractory in a metallurgical vessel. The improvement includes a wedge-shaped metal ring extending along the inner periphery of a metal shell of the vessel adjacent to an opening at one end thereof and... | 03/19/1996 |
| 5427360 | Refractory brick design for open end of refractory lined vessel Method and geometrical arrangement of refractories within a high temperature vessel. A protuberance near the periphery of the vessel opening is formed on an inner surface and a ring of trapezoidally-shaped refractory brick is positioned such that a slopin... | 06/27/1995 |
| 5397110 | Refractory brick and method of making and using same The present invention provides a new and improved refractory brick that provides many distinct advantages over prior art bricks. More particularly, the brick of the present invention facilitates the construction of an integral furnace lining that prevents... | 03/14/1995 |
| 5332201 | System of sized bricks The present invention pertains to a system of sized bricks for lining spherical bottoms, especially of metallurgical vessels, wherein the individual sized bricks are defined by six, essentially flat surfaces, namely, the fire-side surface, the cold-side s... | 07/26/1994 |
| 5316268 | Method for increasing the durability of refractory vessel linings A method for increasing the durability of refractory linings in vessels having inclined areas or conical parts in their inside contour includes in fitting the refractory bricks obliquely following the inside contour of the vessel. The slant of the bricks ... | 05/31/1994 |
| 5308046 | Insulated furnace door system An energy efficient closure system is provided for minimizing heat loss through an elongate, horizontally extending furnace opening that is utilized to admit elongate charges of material, to the interior of a furnace. The system utilizes a plurality of de... | 05/03/1994 |
| 5065987 | Refractory ceramic fiber ladle covers Ladle covers are insulated with refractory ceramic fiber modules. An outer portion of a lower part of the cover conforming to the shape of the ladle rim is insulated with trapezoidal modules. A central portion beneath the cover within the outer portion is... | 11/19/1991 |
| 5024423 | Semiconductor diffusion furnace inner tube An inner tube for use in a semiconductor diffusion furnace is provided comprising a liner or diffusion tube and an insulating layer formed on the entire outer surface of the tube by spraying, typically plasma spraying. The sprayed insulating layer is resi... | 06/18/1991 |
| 5024421 | Interlocking snorkel refractory A degresser snorkel for circulating molten metal from a ladle to a vacuum vessel to thereby degas the molten metal. The degasser snorkel includes an outer castable layer lined over the outer surface of a stainless steel snorkel can. An inner refractory li... | 06/18/1991 |
| 5018710 | Method and devices for removing alumina and other inclusions from steel contained in tundishes Molten steel in tundishes can be contacted with high surface area ceramic shapes which remove the alumina and other impurities contained in steel. Certain ceramic shapes, in particular tundish baffles, having a large surface area which acts as alumina tra... | 05/28/1991 |
| 4989843 | Retaining structure for refractory lining in high temperature vessel A high temperature vessel, such as a ladle for containing molten metal, comprises a metal outer shell and a refractory inner lining. The interior of the vessel has a curved cross-section in a plane transverse to the center line of the vessel, and there is... | 02/05/1991 |
| 4919398 | Attachment structure mountings for refractory fiber ladle preheater sealing rings Attachment structure is provided for mounting refractory ceramic fiber insulation units as components of ladle preheater insulating and sealing rings. The attachment structure provides a natural keying action with radial sliding motion of the insulation u... | 04/24/1990 |
| 4900249 | Aluminum reverberatory furnace lining A lining for use in an aluminum reverberatory furnace or the like for heating molten aluminum in a cavity which cavity is formed by a roof, sidewalls and a bottom which are to be lined with refractory materials. The lining comprises a band of hot face ref... | 02/13/1990 |
| 4900603 | Refractory, heat insulating articles The invention relates to preformed, shaped, refractory, heat-insulating articles for use in an expendable sidewall lining of a molten metal handling vessel. The lining has a face at part of which is exposed a zone of matter of high resistance to erosion b... | 02/13/1990 |
| 4768756 | Converter for preparing steel and a gas supply device for such a converter A converter for preparing steel having a refractory lining including a wear lining is provided at its bottom with a plurality of gas supply devices for supply of stirring gas to the molten bath in the converter. Each gas supply device has a generally vert... | 09/06/1988 |
| 4711430 | Side-injected metal refining vessel and method A side-injected metal refining vessel having improved lining life having a defined refractory lining orientation in the area above a tuyere.... | 12/08/1987 |
| 4709905 | Casing assembly for injecting material into a metallurgical vessel A casing assembly includes a nozzle brick to form part of a wall of a metallurgical vessel. The nozzle brick has therethrough a conical opening defined by a conical inner surface. A casing to be inserted into the conical opening has a truncated conical sh... | 12/01/1987 |
| 4673167 | Method for installing a converter bottom This invention relates to a method for installing a converter bottom, using not only bottom bricks of commercial brick formats but also shaped and fitting bricks, the largest area on a bottom plate being lined with bottom bricks of commercial brick format... | 06/16/1987 |
