Refractory high alumina brick is dense shaped refractory material. With high refractoriness and mechanical behavior under high temperature, refractory high alumina brick is the necessary material of high-temperature services, mainly used for industrial furnaces and kilns and thermal equipment.

It is made by burning bauxite or other material that with high AL2O3 content. Its refractoriness is usually above 1770 °C. It has characteristic of high refractoriness under load, which decide high alumina brick is an ideal material for various kinds of industrial furnace.