| Quantity: | |
|---|---|
0-3mm,1-3mm,3-5mm,5-8mm
SEPPE BAUXITE
25083000
Premium 86% Al₂O₃ calcined bauxite for demanding refractory, abrasive, and high-temperature applications.
▸ 86% high alumina calcined bauxite is produced by sintering selected high-grade raw bauxite in a rotary kiln at temperatures above 1600°C. With a guaranteed minimum alumina content of 86%, it offers outstanding refractoriness, high density, and excellent chemical stability. It is a preferred choice for critical refractory linings, precision casting shells, and high-temperature ceramic components where superior performance is essential.
▸ 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 high quality demanded by 86% alumina applications:
▸ Uniform High Alumina Content — tight control guarantees ≥86% Al₂O₃ in every batch for predictable refractory performance.
▸ Superior Density — complete sintering produces grains with bulk density ≥3.15 g/cm³, minimizing porosity and slag penetration.
▸ Excellent Thermal Stability — stable mullite-corundum phases ensure integrity at service temperatures up to 1770°C.
▸ Batch-to-Batch Consistency — advanced process control delivers repeatable chemistry and sizing for critical formulations.
▸ XRF Chemical Analysis — every batch tested to confirm Al₂O₃ ≥86% and control Fe₂O₃, TiO₂, CaO, MgO
▸ Bulk Density & Porosity — measured to guarantee dense, low-porosity grains
▸ Particle Size Distribution — laser diffraction and sieve analysis for precise 0-3mm, 1-3mm, 3-5mm, 5-8mm fractions
▸ Magnetic Separation Inspection — removal of iron contamination
▸ Batch Traceability — full documentation from raw ore to shipment
▸ 86% Minimum Alumina — provides enhanced refractoriness and resistance to chemical attack compared to lower grades.
▸ High Bulk Density (≥3.15 g/cm³) — dense grain structure reduces porosity and extends lining life.
▸ Low Iron & Alkali — minimizes fluxing reactions in high-temperature service.
▸ Consistent Sizing — available in 0-3mm, 1-3mm, 3-5mm, and 5-8mm for precise formulation control.
▸ Batch-to-Batch Uniformity — ensures predictable performance in your refractory and casting processes.
▸ Steel ladle working linings and impact pads
▸ Blast furnace trough and runner castables
▸ Precision investment casting shell systems
▸ High-temperature kiln furniture and ceramic components
| Chemical Composition | |
| Al₂O₃ | ≥ 86% |
| TiO₂ | 2 - 3% |
| SiO₂ | 5 - 10% |
| Fe₂O₃ | ≤ 1.5% |
| CaO | ≤ 0.4% |
| MgO | ≤ 0.2% |
| K₂O + Na₂O | ≤ 0.4% |
| Physical Properties | |
| Shape | Angular |
| Bulk Density | ≥ 3.15 g/cm³ |
| Apparent Porosity | ≤ 5% |
| Specific Gravity | ≥ 3.80 g/cm³ |
| Hardness | 8.0 - 9.0 Mohs |
| Refractoriness | ≥ 1770℃ |
| Regular Sizes | 0-3mm, 1-3mm, 3-5mm, 5-8mm |
| Grade | Al₂O₃ Content | Main Application |
| High Alumina Grade | 86% Min | Steel ladle linings, blast furnace troughs, investment casting |
| Super Duty Grade | 87% Min | Critical refractories, high-temperature ceramics |
| Specialty Grade | 88-90% Min | Aerospace casting, specialty kiln furniture, ultra-high temperature applications |
▸ SEPPE controls the entire production chain — from carefully selected high-alumina bauxite ore to fully integrated rotary calcination, crushing, precision screening, and global logistics. Every batch is tested to confirm ≥86% Al₂O₃, low impurities, and consistent particle size distribution, ensuring your material performs reliably in the most demanding refractory and casting applications.
▸ With established supply to over 40 countries and dedicated technical support, SEPPE helps refractory manufacturers and foundries achieve longer lining life, improved product quality, and stable production. Flexible packaging, private labeling, and OEM services are 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
▸ The higher alumina content provides increased refractoriness, better slag resistance, and lower porosity, making it suitable for more demanding applications such as ladle working linings and precision casting.
▸ Standard sizes include 0-3mm, 1-3mm, 3-5mm, and 5-8mm. Custom sizing can be arranged upon request.
▸ 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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