High Alumina Bricks vs. Castables: 12 Critical Differences

1. Core Composition & Manufacturing Bricks: Pre-fired shapes with 70–90% Al₂O₃, pressed under 150–300 MPa, sintered at 1450–1600°C. Castables: Dry mixes of calcined bauxite (70–85% Al₂O₃), cement (4–10%), and microsilica, installed by vibration cas...