Buy good quality low price Calcine Bauxite at wedge india for Refractory Bricks, Castables for steel, cement, and glass industries.
Calcined Bauxite is a high-alumina refractory material produced by heating raw bauxite at high temperatures (typically between 1400°C and 1800°C) to remove moisture, organic matter, and other volatile impurities. This process increases the alumina (Al₂O₃) content and improves the material's hardness, thermal stability, and abrasion resistance.
Key Properties of Calcined Bauxite:
High Alumina Content (80–90% Al₂O₃)
High Refractoriness (Melting point ~1800°C)
Excellent Abrasion Resistance
Good Thermal Shock Resistance
High Mechanical Strength
Production Process:
Mining & Crushing: Raw bauxite is mined and crushed into smaller particles.
Calcination: Heated in rotary kilns or shaft kilns at 1400–1800°C to drive off free and combined water, converting gibbsite (Al(OH)₃) and boehmite (AlO(OH)) into corundum (α-Al₂O₃).
Cooling & Sizing: The calcined product is cooled and graded into different particle sizes.
Applications:
Refractory Bricks & Castables (for steel, cement, and glass industries)
Abrasion-Resistant Coatings & Flooring
Proppants in Oil & Gas Fracking
High-Alumina Cement
Ceramics & Polishing Abrasives
Grades of Calcined Bauxite:
High-Grade (88–90% Al₂O₃) – Used in premium refractories.
Medium-Grade (80–85% Al₂O₃) – Common in abrasives and proppants.
Low-Grade (70–80% Al₂O₃) – Used in cement and road surfacing.
