| Quantity: | |
|---|---|
1-3mm
SEPPE BAUXITE
25083000
High-quality 80% alumina rotary kiln calcined bauxite aggregate with precise 1-3mm sizing for general and medium-duty refractory applications.
▸ 80% Al₂O₃ refractory bauxite aggregate is a calcined, high-alumina raw material produced in a rotary kiln at temperatures above 1600°C. With a minimum alumina content of 80%, it offers a balanced combination of refractoriness, density, and cost-effectiveness. The precisely controlled 1-3mm particle size is ideal for use in general-purpose refractory castables, backup linings, and medium-duty brick applications where reliable thermal performance is required.
▸ From bauxite ore to finished sand, every stage is controlled to ensure consistent quality:
01 — Raw Material & Supply · Own mines, Al₂O₃ ≥ 65%
02 — Calcination Process · Rotary kiln at 1450–1550°C
03 — Processing & Grading · Crushing, screening & magnetic separation
04 — Testing & Delivery · Full lab testing & global packaging
▸ The rotary kiln process ensures the consistent quality needed for reliable refractory performance:
• Guaranteed 80% Alumina — tight chemistry control ensures every batch meets the minimum alumina specification.
• Excellent Density — high-temperature sintering produces dense grains (≥3.00 g/cm³) that resist slag penetration and wear.
• Thermal Stability — complete conversion to corundum and mullite phases ensures integrity up to 1770°C.
• Consistent Sizing — precisely screened to 1-3mm, ensuring uniform packing in castables and bricks.
▸ XRF Chemical Analysis — every batch tested to confirm Al₂O₃ ≥80% and control Fe₂O₃, TiO₂, CaO, MgO, K₂O, Na₂O content.
▸ Bulk Density Measurement — verified to ensure consistent grain density ≥3.00 g/cm³.
▸ Particle Size Distribution — sieve analysis to guarantee 1-3mm specification with minimal oversize or undersize.
▸ Magnetic Separation Inspection — removal of iron contamination.
▸ Batch Traceability — full documentation from raw ore to shipment.
▸ 80% Minimum Alumina — provides reliable refractoriness and slag resistance for medium-duty applications.
▸ Optimized Bulk Density (≥3.00 g/cm³) — reduces porosity and extends service life of castables and linings.
▸ Precise 1-3mm Sizing — ensures uniform mixing and packing density, critical for consistent brick and castable quality.
▸ Low Iron & Alkali Content — minimizes fluxing reactions and maintains structural integrity at high temperatures.
▸ Cost-Effective Solution — ideal for applications where 85%+ grades are not required, reducing overall refractory costs.
▸ General-purpose refractory castables and gunning mixes
▸ Backup and safety linings for ladles and furnaces
▸ Medium-duty refractory bricks and shapes
▸ Foundry core and mold aggregates
| Chemical Composition | |
| Al₂O₃ | ≥ 80% |
| TiO₂ | 2 - 3% |
| SiO₂ | 10 - 18% |
| Fe₂O₃ | ≤ 2.5% |
| CaO | ≤ 0.5% |
| MgO | ≤ 0.3% |
| K₂O + Na₂O | ≤ 0.5% |
| Physical Properties | |
| Shape | Angular |
| Target Size | 1-3mm |
| Bulk Density | ≥ 3.00 g/cm³ |
| Specific Gravity | ≥ 3.60 g/cm³ |
| Hardness | 7.5 - 9.0 Mohs |
| Refractoriness | ≥ 1770℃ |
| LOI | ≤ 0.5% |
| Grade | Al₂O₃ Content | Main Application |
| Economy Refractory Aggregate | 75% Min | General backup linings, low-cost castables |
| Standard Refractory Aggregate | 80% Min | General-purpose castables, medium-duty bricks |
| High Alumina Aggregate | 85% Min | Ladle linings, furnace linings, critical castables |
▸ SEPPE integrates mining, rotary kiln calcination, crushing, and precision screening to deliver consistent refractory aggregates. Our 80% alumina bauxite is manufactured to the same rigorous standards as our premium grades, ensuring reliable performance and cost efficiency.
▸ With global logistics and technical support, we help refractory manufacturers and end-users maintain stable production, reduce downtime, and optimize material costs. Custom packaging and private labeling available.
▸ 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 widely used in general-purpose refractory castables, backup linings, medium-duty bricks, and foundry aggregates where cost-effective thermal performance is needed.
▸ 80% alumina offers a more economical solution with slightly lower refractoriness and density than 85%, making it ideal for less severe service conditions while still providing excellent thermal stability.
▸ Yes. Free samples for 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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