Zirconia corundum ramming material is made by oxidation of fused zirconia corundum particles and a small amount of additives prepared. The product has the advantages of easy to use, hardening at room temperature, high temperature strength,thermal expansion rate, and strong glass erosion characteristics, is the glass melting furnace bottom seal layer of the ideal unshaped refractory Features: 1.easy to use 2.hardening at room temperature 3.high temperature strength 4.thermal expansion rate 5.strong glass erosion Item Zirconia corundum ramming material Zr2O,% 30 30 30 Al2O3,% 48 48 48 SiO2 % 20 20 20 Fe2O3 ,% 1.5 1.5 1.5 Bulk Density ( g/cm3) 3.2 3.1 3.1 Application: Ramming  for various blast furnace slag runner and iron runner.