The utility model relates to the technical field of air
brick, disclose a kind of high-performance monolithic air
brick, including air
brick core, seat brick and sintered protective sleeve, the cavity for accommodating air brick core is equipped in protective sleeve inside, and air brick core is located in the cavity of protective sleeve, seat brick is casted and formed in the outside of protective sleeve, and the same end of protective sleeve and air brick core is extended to the outside of seat brick, and the same end of protective sleeve and air brick core is wrapped in the inside of seat brick;Ventilation component is provided on seat brick, and ventilation component is used to ventilate the end face of air brick core located in the inside of seat brick one end.The utility model can slow down the speed of seat brick being eroded by
molten steel.