Working lining castable for ladle is a basic unshaped refractory prepared with high-purity magnesia and magnesia-alumina spinel as main raw materials, mixed with composite binders, dispersants and antioxidants. It is installed by vibration casting. It boasts strong slag corrosion resistance, excellent thermal shock stability, stable volume at high temperature and good penetration resistance. Typical chemical composition: MgO 82%～90%. It is mainly used for the working lining of steel ladles. Typical physical indexes: bulk density ≥2.85 g/cm³, cold crushing strength ≥40 MPa.
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