A furnace stave comprising a plurality of internal channels or conduits for circulating cooling fluid through the stave; an inlet and an outlet channel associated with each internal channel or conduit; wherein one of the internal channels or conduits is disposed in a protrusion from the stave.

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 modular dome structure (5) for a masonry oven, which includes a plurality of interlocking wall modules (60) abutting one another to form a wall of the dome and a base (7) upon which the wall modules are mounted. Each wall module (60) is formed of a plurality of blocks (63) hingedly interconnected together and shaped so as to form an arch segment of the dome wall when facing surfaces of adjacent blocks (63) of the wall module (60) abut and interlock with one another.

A furnace stave comprising a plurality of internal channels or conduits for circulating cooling fluid through the stave; an inlet and an outlet channel associated with each internal channel or conduit; wherein one of the internal channels or conduits is disposed in a protrusion from the stave.

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.

Block apparatus for use with oxidizers are disclosed. An example apparatus includes a converter including a block having a plurality of channels extending therethrough. The channels define a cellular pattern including at least one central channel and a plurality of surrounding channels. Protrusions extend into the channels from respective inner surfaces of the channels. The inner surfaces are defined by respective peripheral walls.

The invention relates to a wall for a furnace, a refractory brick for a wall for a furnace, a furnace, a fastening system, a method for fastening a refractory brick in a groove, and a method for manufacturing a wall for a furnace.