High Purity Calcined Bauxite 70% 90% Low porosity For Refractories
High Purity Grade Calcined Rotary Kiln Bauxite Calcined Bauxite 70-90% for Refractories
1. Calcined Bauxite Introduction
Calcined Bauxite is produced by sintering high-alumina bauxite in rotary, round or shaft kilns at high temperatures of 1600℃-1800℃. This process of calcining (heating) bauxite in kilns removes moisture and gives Calcined Bauxite its high alumina content and refractoriness, low iron, and grain hardness and toughness. Its thermal stability, high mechanical strength and resistance to molten slags make Calcined Bauxite an ideal raw material in the production of shaped and unshaped refractories for the steel industry, foundries, glass and cement plants.
2. Calcined BauxiteSpecifications
| Al2O3 (%) | Fe2O3 (%) | TiO2 (%) | CaO+MgO (%) | K2O+Na2O (%) | B.D (g/cm3) | Size |
| MIN | MAX | MAX | MAX | MAX | MIN | |
| 89.5 | 1.5 | 4.0 | 0.35 | 0.35 | 3.35 |
8-5mm,5-3mm 3-1mm,1-0mm 200mesh 325mesh |
| 88.0 | 1.6 | 4.0 | 0.4 | 0.4 | 3.2 | |
| 85.0 | 1.8 | 4.0 | 0.4 | 0.4 | 3.1 | |
| 80.0 | 2.0 | 4.0 | 0.5 | 0.5 | 2.9 | |
| 70~80 | 2.0 | / | 0.6 | 0.6 | 2.75 |
3. Calcined Bauxite General advantages
- Direct manufacturer.
- Good reputation.
- Custmerized sizing.
- Packing as required.
- Large capacity.
- 7x24hours response.
4. Calcined Bauxite Characteristics
- High refractoriness.
- Physicochemical stability.
- Bulk density high.
- Low porosity.
- Low water absorption.
- Fully calcined
- Low impurity content.
5. Calcined Bauxite Applications
1. Producing bauxite cement.
2. Abrasives.
3. Ceramics industry.
4. Chemistry industry for all kinds of aluminum compound.
5. Aluminum metallurgy.
6. Precision casting/Investment casting: bauxite grog fines can be made into mold for precision casting.
7. Refractory: Aluminum silicate refractory fiber, mixing magnesia and bauxite grog with binders to pour the molten steel ladle.
6. Calcined Bauxite Particle sizes Available
Size of powder: -200mesh,-270mesh,-325mesh.
Size of particle: 0-1mm,1-3mm,3-5mm,5-8mm,8-15mm,0-5mm,0-30mm, 0-50mm.
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