A novel refractory-corundum-SiC containing metal plastic phase composite refractory is introduced in this paper. The compositions, microstructure and properties of the material have been studied. The results show that the material is a high quality refractory for the lining of blast furnace. As the plastic metal mixing into hard corundum in the refractory, the refractory appears plastic characteristics such as higher bulk density, lower porosity and higher mechanical properties. When the active metal on the surface of brick, it is easy to react with atmosphere of the furnace to form silicon carbide, silicon nitride or Sialon, which possesses a high performance of resistance to corrosion of molten slag and iron. It implies the refractory has a self-repairing capability, i.e. a "smart" material.
