Grade-1 high alumina brick

Grade-1 high alumina brick contains 72%–80% Al₂O₃. The higher the alumina content, the greater the refractoriness, with a refractoriness exceeding 1750°C. The brick has a load softening temperature of 1510°C under a pressure of 0.2 MPa. Its bulk density is greater than 2.5 g/cm³, indicating high density and excellent stability. Each brick weighs approximately 4.4 kg, with 227 bricks per ton, and they are packaged on pallets.