... appropriate amount of α-Al2O3 powder as requirement.Aluminate cement can be classified into four kinds by Al2O3 content:CA ... CA-70,CA-80It can be used to formulate unshape refractory material; expansive cement, self-stressing cement, addition material of chemical ... ,hCA-50,CA-70,CA-80306CA-606018 Table 3 Cement Slurry Strength ItemCold Crushing Strength, MPaBreaking strength, MPa6h1d3d28d6h1d3d28dCA ...