Abstract: In a steel ladle used for handling molten steel, a precast ladle barrel ring forms part of a refractory structure that covers the bottom wall and side wall of the steel ladle. The precast ladle barrel ring is comprised of a monolithic annular ring formed of a high-temperature, cast refractory. The annular ring further includes means for positioning the precast ladle barrel ring in a steel ladle.

Abstract: In a steel ladle used for handling molten steel, a precast ladle barrel ring forms part of a refractory structure that covers the bottom wall and side wall of the steel ladle. The precast ladle barrel ring is comprised of a monolithic annular ring formed of a high-temperature, cast refractory. The annular ring further includes means for positioning the precast ladle barrel ring in a steel ladle.

Abstract: In a steel ladle used for handling molten steel, a precast ladle barrel ring forms part of a refractory structure that covers the bottom wall and side wall of the steel ladle. The precast ladle barrel ring is comprised of a monolithic annular ring formed of a high-temperature, cast refractory. The annular ring further includes means for positioning the precast ladle barrel ring in a steel ladle.

Abstract: In a steel ladle used for handling molten steel, a precast ladle barrel ring forms part of a refractory structure that covers the bottom wall and side wall of the steel ladle. The precast ladle barrel ring is comprised of a monolithic annular ring formed of a high-temperature, cast refractory. The annular ring further includes means for positioning the precast ladle barrel ring in a steel ladle.

Abstract: In a steel ladle used for handling molten steel, a precast ladle barrel ring forms part of a refractory structure that covers the bottom wall and side wall of the steel ladle. The precast ladle barrel ring is comprised of a monolithic annular ring formed of a high-temperature, cast refractory. The annular ring further includes means for positioning the precast ladle barrel ring in a steel ladle.

Abstract: In a metallurgical vessel used for handling molten metal, a preformed refractory component forms part of a refractory structure that covers the bottom wall and side wall of the metallurgical vessel. The preformed refractory component is generally cup-shaped and formed of high-temperature refractory materials.

Abstract: In a steel ladle used for handling molten steel, a precast ladle barrel ring forms part of a refractory structure that covers the bottom wall and side wall of the steel ladle. The precast ladle barrel ring is comprised of a monolithic annular ring formed of a high-temperature, cast refractory. The annular ring further includes means for positioning the precast ladle barrel ring in a steel ladle.

Abstract: A sill and door jamb assembly providing an opening in an electric arc furnace, the sill and door jamb assembly having a sill block assembly and two jamb block assemblies. The sill block assembly having side-by-side sill blocks, each of the sill blocks being positioned side-by-side to form the sill block assembly and having an upper end and a lower end. The lower end of the sill block assembly is confined within a plurality of courses of the refractory bricks. Each jamb block assembly having a plurality of jamb blocks positioned side-by-side. Each of the jamb block assemblies having a lower end and an inner surface abutting the distal ends of the sill block assembly. The inner surfaces of the jamb block assemblies and the upper surface of the sill block assembly form the slag opening in the furnace.

Abstract: A magnesia-carbon brick comprised of about 50 to about 95% by weight magnesia and about 1 to about 20% by weight carbon, with or without metallic additions, such that the chemical analysis of the mixture of aggregates used in the brick will comprise, by chemical analysis, about 2 to about 15% SiO2, about 3 to about 50% Al2O3, and about 50 to about 95% MgO.

Abstract: A mold dimensioned to be positioned within a refractory-lined tundish. The mold has an upper wall and a side wall extending downwardly from the upper wall, the side wall having a shape generally conforming to the shape of the internal cavity of the tundish and having a lower end formed to rest on the refractory lining on the bottom wall of the refractory-lined tundish. The upper wall and side wall define an interior chamber. The side wall of the mold and the refractory lining on the sloping wall of the tundish form a gap therebetween. The gap extends around the mold, the mold being dimensioned such that the gap between the side wall of the mold and the refractory lining on the side wall of the tundish is wider at an upper portion of the internal cavity than at a lower portion of the cavity. A heating means extends through the upper wall of the mold for heating the interior chamber of the mold.

Abstract: This invention is directed to ceramic metal composite useful as a refractory and having improved abrasion, corrosion, and oxidation resistance. The ceramic metal composite of the present invention is comprised of ceramic refractory aggregate, metal particulate, and a nonaqueous binder wherein the ceramic refractory aggregate, metal particulate, and binder residuals react to form a three-dimensional ceramic-metal matrix. The ceramic-metal matrix is further stabilized by bonds between the metal particulate, reaction products of the metal particulate, and the ceramic refractory aggregate.

Abstract: A refractory pour tube with a wear resistant plate includes a one-piece composite member formed of different refractory compositions, a casing disposed around a portion of the member, and castable refractory material disposed within the casing. The composite member has a tubular body portion defining an interior bore and an end portion defining a flat plate surface including an opening communicating with the bore. The end portion is formed of a hard refractory composition resistant to abrasion, while the tubular body portion is formed of a refractory composition resistant to thermal shock. First and second castable refractory materials are poured into the casing to form a refractory ring surrounding the flat plate surface and a refractory sleeve surrounding the tubular body portion. The refractory ring cooperates with the flat plate surface to form a hard, wear resistant plate suitable for use in a sliding valve assembly.

Abstract: The present invention is directed to a co-molding process for producing co-molded, chemical bonded, canned refractory articles which eliminates the costly and problematic firing or sintering steps and which eliminates the time consuming separate canning and sizing of the refractory articles as required by conventional methods. The co-molding process of the present invention comprises the steps of:(a) mixing a refractory aggregate with a chemical binder to form a pressable refractory composition;(b) placing a metal can into a press cavity die;(c) charging said refractory composition into said metal can and press cavity die;(d) subjecting said refractory composition to high pressures while in said press cavity die to shape and size said refractory article; and(e) drying said refractory article at temperatures sufficient to cure said chemical binder.

Abstract: The present invention relates to specially shaped structural components for use in the construction of furnaces, foundries, and similar applications. In particular, the present invention relates to an improved flue wall in a high temperature furnace. The improved flue wall is constructed of specially shaped bricks to improve the tensile strength of the wall, increase the shear transfer capacity of the wall, and thus improve the flue wall life. The flue wall is constructed of specially designed refractory bricks joined together by air and/or heat-set mortar and arranged in courses, and comprises two parallel face walls parallel to the chambers wherein the carbon blocks are positioned and enclosing a flue chamber, two side walls generally perpendicular to the face walls enclosing the lower portion of the flue chamber, and baffle bricks and tie bricks arranged in a number of noncontinuous columns throughout the flue wall.

Abstract: A checker brick mold including a mold body having an internal cavity is disclosed. The cavity has entrance portions with one entrance portion being larger than the other. The cavity also has a central portion between and adjacent the entrance portions and flaring inwardly from the larger entrance portion to the other. A spaced pair of mold entrance sections are provided each to be inserted into an associated one of the entrance portions and having surfaces complemental to the associated entrance portion. A prime mover is operatively connected to the entrance sections for moving the sections toward one another to compress a mass in the cavity and away from one another to remove a compressed mass from the cavity.

Abstract: An interlocking checker brick used to form a checkerwork for use in recovering heat in thermal regenerators and recuperators. The checker brick is made of a refractory material and is of a generally trapezoidal shape with each side wall having at least a section forming an acute angle with respect to the base. The preferred brick has spaced side walls each of which includes top and bottom sections adjacent to and perpendicular to top and bottom surfaces respectively. Each side wall also includes a central section flaring outwardly and downwardly from its top to its bottom section. Checkerworks utilizing these bricks increase turbulence while reducing laminar flow during alternating cycles of flowing gases and air.

Abstract: 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 the dislodgement or movement of individual bricks. The refractory brick of the present invention also provides a continuous refractory lining which affords improved lining lifetimes or furnace campaigns. Each brick comprises a refractory portion and a pair of steel portions. The steel portions are each contained within a recess formed along each of the major surfaces of the brick. The brick is utilized to form a refractory lining within a vessel wherein at least a part of the refractory portion of each brick is in contact with the refractory portion of adjoining bricks and the steel portions of each of the bricks is metallurgically bonded to the steel portions of adjoining bricks so as to provide an integral (monolithic) refractory wall.

Abstract: An interlocking checker brick used to form a checkerwork for use in recovering heat in thermal regenerators and recuperators. The checker brick is made of a refractory material and comprises a rectangular top, a rectangular base, two side walls and two end walls. The end walls each have a generally trapezoidal shape and therefore each side wall has at least a section forming an acute angle with respect to the base. The preferred brick has spaced side walls each of which includes top and bottom sections adjacent to and perpendicular to top and bottom surfaces respectively. Each side wall also includes a central section flaring outwardly and downwardly from its top to its bottom section. Checkerworks utilizing these bricks are arranged to improve the amount of exposed brick surface that acts as a thermal surface and to increase turbulence while reducing laminar flow during alternating cycles of flowing gases and air. A method and apparatus for making the preferred brick is also disclosed.