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 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 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 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.

The invention relates to wood-burning ovens and may be used for preparing food, in particular, baked items, for example, pizza.

The invention relates to wood-burning ovens and may be used for preparing food, in particular, baked items, for example, pizza.

A refractory block assembly for a steam reformer furnace tunnel includes a hollow main body portion having at least one through-hole having openings formed in a first side and an opposed second side of the hollow main body portion. At least one refractory insert member, having mechanical mating features on at least a portion of the outer surface thereof, resides within at least one of the at least one through-hole of the hollow main body portion.

A refractory block assembly for a steam reformer furnace tunnel includes a hollow main body portion having at least one through-hole having openings formed in a first side and an opposed second side of the hollow main body portion. At least one refractory insert member, having mechanical mating features on at least a portion of the outer surface thereof, resides within at least one of the at least one through-hole of the hollow main body portion.

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 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.