Refractory tile for a suspended furnace wall

A refractory tile for use in an insulated wall for a glass furnace or the like, said tile having a generally rectangular shape in plan view defined by opposed upper and lower horizontal faces joined by vertical edges, including a hot face edge and a cold face edge, said upper and lower horizontal faces having complementary raised and lowered tongue and groove portions formed therein, said tongue and groove portions defined by respective pairs of straight, converging and diverging edges adapted to matingly engage complementary tongue and groove portions formed in subjacent complementary tongue and groove portions formed in subjacent and superjacent courses of tiles when said tiles are laid in an overlapping, bonded construction;

• said tile having alternating grooves and ridges formed along laterally opposed vertical edge portions adapted to matingly engage like formations on adjacent tiles in a common course of tiles;
• said tile including a neck portion outwardly extending from said cold face edge adapted to define an open space between said neck portion and a neck portion of an adjacent tile for reception ofa preformed shape of thermal insulation therein;
• and
• said tile including slot means formed therein along opposed horizontal faces of said tile extending from the neck portion and terminating in at least one transverse T-portion spaced inwardly from said cold face edge toward said hot face edge so as to be located in a portion of said tile wherien the temperature is on the order of 2100.degree. F., said slot means adapted to engage a T-portion of a hanger for attachment of the refractory tile to a structural member of said wall.