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0-1mm
SEPPE BAUXITE
▸ One of the hardest natural minerals after diamond, engineered for superior refractory and abrasive performance.
★ Al₂O₃ 75-90% ★ Refractoriness 1770℃+
★ Bulk Density 2.80-3.25 g/cm³ ★ Hardness 7.5-9.0 Mohs
▸ Refractory grade bauxite is produced by calcining high-grade raw bauxite at high temperatures. This process removes moisture and impurities, yielding a dense, hard material with high alumina content and exceptional thermal stability. It is widely used as a key aggregate in refractory castables, bricks, and shapes, as well as in abrasive and ceramic applications where resistance to extreme temperatures and mechanical wear is essential.
▸ Our advanced calcination process delivers consistent, high-performance refractory bauxite:
Uniform Heat Distribution — every particle receives consistent thermal treatment, eliminating under-burned or over-burned material.
High Bulk Density — dense grain structure reduces porosity and improves wear resistance in finished refractories.
Improved Phase Stability — complete conversion to stable mullite and corundum phases ensures reliability at temperatures up to 1770°C.
Lower Variability — batch-to-batch consistency that traditional shaft kilns cannot match, critical for industrial refractory formulations.
▸ XRF Chemical Analysis — every batch tested for Al₂O₃, Fe₂O₃, TiO₂, CaO, MgO content
▸ Bulk Density Measurement — pycnometer method to verify specified density range
▸ Particle Size Distribution — laser diffraction and sieve analysis for accurate grading
▸ Magnetic Separation Inspection — removal of iron contamination to meet premium specifications
▸ Batch Traceability — full documentation from raw ore source to shipping container
On-site laboratory at SEPPE processing facility
▸ Wide Alumina Range — available from 75% to 90% Al₂O₃ to match your specific performance and budget requirements.
▸ High Bulk Density — dense grain structure reduces porosity and improves wear resistance in castables and bricks.
▸ Excellent Refractoriness — withstands service temperatures up to 1770°C without deformation.
▸ Low Impurity Levels — low iron and alkali content minimizes reactions in high-temperature environments.
▸ Flexible Sizing — available in a range of calibrated fractions to suit various industrial processes.
▸ Refractory bricks, castables, and gunning mixes
▸ Ladle linings, tundish linings, and furnace linings
▸ Kiln furniture and ceramic shapes
▸ Abrasive blasting and grinding media
| Chemical Composition | |
| Al₂O₃ | 75 - 90% |
| TiO₂ | 2 - 3% |
| SiO₂ | 6 - 18% |
| Fe₂O₃ | 0.5 - 2.5% |
| P₂O₅ | 0 - 0.3% |
| MgO | 0 - 0.2% |
| CaO | 0 - 0.4% |
| K₂O + Na₂O | 0 - 0.4% |
| Physical Properties | |
| Shape | Angular |
| LOI | 0.1 - 0.5% |
| Specific Gravity | ≥ 3.70 g/cm³ |
| Bulk Density | 2.80 - 3.25 g/cm³ |
| Hardness | 7.5 - 9.0 Mohs |
| Moisture Content | 0.1 - 0.3% |
| Polished Stone Value | 70 Min |
| Aggregate Abrasion Value | 10 Max |
| Regular Sizes | 0-1mm, 1-3mm, 3-5mm, 5-8mm, … |
| Grade | Al₂O₃ Content | Main Application |
| Economy Refractory | 75% Min | General purpose castables and backup linings |
| General Refractory | 80% Min | Rotary kiln linings, cement plant refractories |
| Premium Refractory | 85% Min | Steel ladles, blast furnaces, tundish linings |
| Specialty / High-End | 87-88% Min | High-temperature ceramics, specialty kiln furniture |
▸ SEPPE controls the entire production chain — from high-grade bauxite ore selection to fully integrated calcination, crushing, screening, and global logistics. Our advanced laboratory monitors every batch for chemical consistency and physical properties, ensuring you receive material that performs reliably in extreme environments.
▸ With established supply to over 40 countries and dedicated technical support, SEPPE helps refractory, abrasive, and ceramic manufacturers reduce rejection rates and maintain stable production. We also offer flexible packaging and OEM services to match your operational needs.
▸ 50 kg bags, 1 MT, 1.25 MT or 1.35 MT jumbo bags
▸ 20' FCL: approx 25-27 MT
▸ Private labeling and custom packaging available
▸ It is used as a high-temperature aggregate in refractory bricks, castables, ladle linings, kiln linings, and other industrial furnaces.
▸ We supply grades from 75% up to 90% Al₂O₃, including 80%, 85%, 87%, and 88% to match your specific requirements.
▸ Standard sizes: 0-1mm, 1-3mm, 3-5mm, 5-8mm. Custom sizing can be arranged upon request.
▸ Absolutely. With integrated mining and processing, we maintain stable inventory levels and can support annual supply contracts.
▸ Yes. Free samples for lab evaluation, along with TDS, SDS, and SGS test reports are available upon request.
▸ Contact SEPPE for: • Free Samples • TDS / SDS Documents • OEM Packaging Options • Bulk Container Pricing
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