A refractory ring structure for forming a section of an inner wall or liner of a metallurgical vessel is provided. The refractory ring structure comprises a continuous top surface; a continuous bottom surface; a continuous arcuate inner surface extending from the top surface to the bottom surface and defining a cavity; a continuous arcuate outer surface opposite the inner surface and extending between the top surface and the bottom surface; and a continuous protrusion or a plurality of protrusions extending from the inner surface for lifting the ring structure. The refractory ring structure comprises a heat resistant, refractory material suitable for use in the inner wall of a metallurgical vessel. Also provided herein are a metallurgical vessel comprising a refractory ring structure as disclosed herein, and a method for providing or replacing all or a section of a refractory inner wall or liner of a metallurgical vessel.

A kiln includes a stage, a stove, a gas supply assembly, and a combustion device wherein, the stage includes a stage body and a carrier member. The stage body has a first chamber, while the carrier member is detachably disposed at the stage body. The stove is joined to the stage body and has an entry and a second chamber. The gas supply assembly is disposed at the stage body, and part of the gas supply assembly is located in the first chamber. The combustion device is located in the second chamber. The carrier member can be detached from the stage body and be moved out of the stove from the entry so that the first chamber communicates with the second chamber. In this way, the working space inside the kiln can be increased, which is convenient for users to repair and maintain the gas supply assembly or the combustion device.

A high-temperature containment structure includes a roof assembly including at least one layer of refractory material that includes a first layer of refractory material, a plurality of sidewalls, a plurality of pockets disposed in the first layer of ceramic refractory material, each pocket including a retainer that is spaced apart from sides of the pocket by gaps when the roof assembly is at room temperature, an upper plate disposed above the first layer of refractory material, and a first plurality of suspension rods that pass through first holes in the at least one layer of refractory material and the upper plate, wherein the plurality of suspension rods mechanically couple the retainers to the upper plate to retain the at least one layer of refractory material. The structure can use materials with different thermal expansion rates without cracking at elevated temperatures.

A modular structure wall of a high-temperature furnace, which greatly increases the radiation coefficient of the inner wall, enhances heat transfer efficiency, saves energy, reduces emissions, slows aging, and prolongs the furnace wall service life. The modular wall comprises preset furnace wall main trusses and a furnace roof truss. Connecting I-beams are respectively fixed on the bottom surface of the roof truss. Top clamping structures of hoisting outer screws are hooked with the bottoms of the I-beams. Upper surfaces of ceramic fiber cotton modules are uniformly distributed with upwardly convex hoisting outer screws. The ceramic fiber cotton modules are installed on the lower surface of the roof truss through the outer screws. A ceramic fiber cotton felt is laid in the gap between these modules and the lower I-beam surfaces, and a furnace wall inner protective lining is installed on the lower surfaces of the ceramic fiber cotton modules.

A refractory insert is provided, including a main body part having a first surface defining a first sidewall, an opposed second surface defining a second sidewall, and an outer peripheral surface separating the first and second surfaces, and a mechanical mating member provided on at least a portion of the outer peripheral surface thereof. The mechanical mating member includes a retention mechanism for controlling and retaining a position of a corresponding mating member in connection therewith.

A system and method for repairing a coke oven having an oven chamber formed from ceramic bricks. A representative system includes a insulated enclosure insertable into the oven chamber and includes removable insulated panels that define an interior area for workers to work in. The insulated enclosure is movable between an expanded configuration and a compact configuration and moving the enclosure to the expanded configuration will decrease the distance between the insulated enclosure and the walls of the oven chamber. Removing the panels exposes the ceramic bricks and allows workers within the interior area to access and the bricks and repair the oven chamber while the oven chamber is still hot. A loading apparatus lifts and inserts the insulated enclosure into the oven chamber. The insulated enclosure can be coupled to additional insulated enclosures to form an elongated interior area.

Apparatus for heating metal products, able to heat by electromagnetic induction at least one metal product positioned in a heating chamber and mobile in a direction of feed, in which said heating apparatus comprises one or more heating coils positioned in a ring around said heating chamber and said metal product to be heated; said one or more heating coils are positioned substantially transversely to the direction of feed of the metal product and are able to generate a magnetic field having a direction substantially parallel or coincident to the direction of feed of the product to be heated and directed in the same direction as said direction of feed of the product to be heated; said heating apparatus also comprises at least one heat shield positioned between said one or more heating coils and the metal product to be heated; said heat shield comprises walls provided with blocks of thermal and electric insulating material and positioned around the metal product to be heated and also comprises cooling pipes positioned in said walls and configured to allow the flow of at least one cooling fluid.

A processing apparatus for a thermal treatment of a workpiece is presented. The processing apparatus includes a processing chamber, a workpiece support disposed within the processing chamber, a rotation system configured to rotate the workpiece support, a gas delivery system configured to flow one or more process gases into the processing chamber from the a first side of the processing chamber, one or more gas exhaust ports for removing gas from the processing chamber such that a vacuum pressure can be maintained, one or more radiative heating sources disposed on the second side of the processing chamber, one or more dielectric windows disposed between the workpiece support and the one or more radiative heating sources, and a workpiece temperature measurement system configured at a temperature measurement wavelength range to obtain a measurement indicative of a temperature of a back side of the workpiece.

A unitary refractory ring having a sidewall surrounding and spaced from a center axis, and one or more lifting lugs distributed around the center axis. The lifting lugs extend from an inner face of the sidewall towards the center axis, and are located between lower and upper axial faces of the sidewall. Each lifting lug has a lower lug face extending radially towards the center axis from the inner face of the sidewall, and a backing structure extending upwards along an axial direction from the lower lug face towards the upper axial face of the sidewall. An assembly of refractory rings, and methods for making and assembling refractory rings are also provided.

An exemplary apparatus includes a metal furnace tube having an open first end and an opposite second end. The metal furnace tube includes an inner chamber, a fluid inlet to intake a fluid into the inner chamber, and a fluid outlet to exhaust the fluid from the inner chamber, the inner chamber to support a plurality of substrates within the metal furnace tube. The apparatus includes a first base plate or flange back plate coupling the fluid inlet to the inner chamber; a second base plate or flange back plate coupling the fluid outlet to the inner chamber; and a furnace includes a heater to heat the metal furnace tube, the metal furnace tube being mounted within the furnace and the heater being disposed outside the metal furnace tube.