3mm 1mm Calcined Bauxite Grain 85% With High Bulk Density
High Bulk Density Grade Calcined Rotary Kiln Bauxite 86% 3-1mm for Refractories Castables
1. Calcined Bauxite Introduction
Calcined bauxite is produced by sintering/calcining with natural bauxite ore of low iron, low alkali at temperatures of 1600 - 1800 degree Celsius in the rotary kiln or round kiln through pre-heationg, calcination, cooling and other processes. During Calcining, it can be removed impurities and improving the content of alumina. Refractory grade bauxite has high refractoriness, good mechanical strength and moderate slag resistance. Therefore calcined bauxite is one of the most important raw materials for the production of shaped and unshaped refractories for the steel industry, foundries, glass and cement plants.
2. Calcined BauxiteSpecifications
| Chemical composition(%) | RKB-75 | RKB-78 | RKB-80 | RKB-82 | RKB-84 | RKB-85 | RKB-86 | RKB-87 | RKB-88 | RKB-89 |
| Al2O3 (min) | 75.00 | 78.00 | 80.00 | 82.00 | 84.00 | 85.00 | 86.00 | 87.00 | 88.00 | 89.00 |
| Fe2O3 (max) | 2.50 | 2.30 | 2.20 | 2.20 | 2.00 | 2.00 | 2.00 | 1.80 | 1.70 | 1.60 |
| SiO2 (max) | 19.00 | 16.00 | 14.00 | 12.00 | 10.00 | 9.00 | 8.00 | 7.00 | 6.00 | 5.00 |
| TiO2 (max) | 4.00 | 4.00 | 4.00 | 4.00 | 4.00 | 4.00 | 4.00 | 4.00 | 4.00 | 4.00 |
| CaO+MgO (max) | 0.80 | 0.80 | 0.80 | 0.70 | 0.70 | 0.60 | 0.60 | 0.60 | 0.60 | 0.60 |
| K2O+Na2O (max) | 0.50 | 0.50 | 0.50 | 0.40 | 0.40 | 0.40 | 0.30 | 0.30 | 0.40 | 0.40 |
| B.D. ( g/ccm min) | 2.70 | 2.75 | 2.80 | 2.90 | 3.00 | 3.10 | 3.15 | 3.20 | 3.25 | 3.30 |
| H2O (max) | 0.50 | 0.50 | 0.50 | 0.50 | 0.50 | 0.50 | 0.50 | 0.50 | 0.50 | 0.50 |
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 and Abrasives.
2. Ceramics industry.
3. Chemistry industry for all kinds of aluminum compound.
4. Precision casting/Investment casting: bauxite grog fines can be made into mold for precision casting.
5. Aluminum production, refractories, abrasives, cement, chemicals, ceramics, non-slip pavement and flooring.
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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