Our produced high alumina bricks is bauxite base, a kind of insulation material adopting organic matter as ignition loss substance in order to increase the porosity of refractory, which has such advantages as high porosity, small volume density, good insulation effect, high mechanical intensity, small thermal conductivity and long service life. For various industrial kilns & furnaces include blast furnace, it is a kind of essential refractory material for energy saving and temperature preservation. 

This series of high alumina bricks contain at least 55% alumina are made of selected high alumina bauxite, kaolin caly, hollow microsphere as the mian material. By shaping at high pressure and sintering at high temperature.