| Quantity: | |
|---|---|
200Mesh
SEPPE BAUXITE
25083000
▸ Fine‑grained calcined bauxite powder for refractory castables, mortars, and ceramic formulations.
★ 200 Mesh Fine Powder
★ High Alumina (75‑90%)
★ Refractoriness 1770℃+
★ Low Moisture
▸ Shaft calcined bauxite powder is produced by calcining high‑grade raw bauxite in a vertical shaft kiln, followed by precise grinding and classification to a nominal 200 mesh (≤75 µm). This fine powder retains the high alumina content and refractoriness of the base material, making it an excellent filler and matrix component in refractory castables, gunning mixes, repair mortars, and ceramic bodies.
▸ The shaft kiln method delivers cost‑effective base material for fine grinding, ideal for high‑volume powder users:
Consistent Feedstock — stable calcination ensures uniform grindability and consistent particle size distribution after milling.
Cost Advantage — lower energy costs in shaft kilns translate to competitive powder pricing for large‑scale refractory plants.
High Purity Retention — carefully controlled calcination preserves alumina content, resulting in a powder with excellent refractory performance.
Reliable Supply — integrated mining, calcining and grinding operations guarantee long‑term availability of 200 mesh powder.
▸ XRF Chemical Analysis — every batch tested for Al₂O₃, Fe₂O₃, TiO₂, CaO, MgO
▸ Particle Size Distribution — laser diffraction analysis to verify 200 mesh cut (D50 ≤45 µm)
▸ True Density Measurement — helium pycnometer method to confirm ≥3.70 g/cm³
▸ Moisture Content — controlled drying and monitoring to keep moisture ≤0.5%
▸ Batch Traceability — full documentation from raw ore source to finished powder shipment
On-site laboratory at SEPPE processing facility
▸ Ultra‑Fine Grind — nominal 200 mesh particle size improves packing density and reactivity in castable matrices.
▸ High Alumina Content — available from 75% to 90% Al₂O₃ to tailor the refractoriness and slag resistance of your formulation.
▸ Low Impurity Levels — carefully controlled Fe₂O₃, alkali and moisture levels minimise detrimental reactions at high temperatures.
▸ Excellent Workability — fine powder easily disperses in water or binder systems, improving the rheology of castables and mortars.
▸ Versatile Applications — suitable for a wide range of monolithic refractories, repair mixes, and ceramic bodies.
▸ Typical uses: refractory castables and gunning mixes, repair mortars, ramming masses, foundry coatings, ceramic kiln furniture, and as a filler in high‑temperature adhesives.
| Chemical Composition | |
| Al₂O₃ | 75 - 90% |
| Fe₂O₃ | 0.5 - 2.5% |
| TiO₂ | 2.0 - 4.0% |
| SiO₂ | 6 - 18% |
| CaO + MgO | ≤ 0.6% |
| K₂O + Na₂O | 0 - 0.4% |
| Physical Properties | |
| Nominal Mesh Size | 200 Mesh (≤75 µm) |
| D50 (typical) | 40 - 45 µm |
| True Density | ≥ 3.70 g/cm³ |
| Moisture Content | ≤ 0.5% |
| Refractoriness | ≥ 1770℃ |
| Appearance | Grey to brownish fine powder |
| Grade | Al₂O₃ Content | Typical Use |
| Economy | 75% Min | Low‑cement castables, backup linings |
| General Refractory | 80% Min | Standard castables, gunning mixes |
| Premium | 85% Min | High‑alumina castables, ladle linings |
| Specialty | 87‑88% Min | Advanced ceramics, kiln furniture |
▸ SEPPE integrates mining, shaft kiln calcination, fine grinding, and classification under one quality system. Every bag of 200 mesh powder is checked for particle size, chemistry, and moisture, guaranteeing batch‑to‑batch consistency for your refractory formulations.
▸ Supplying over 40 countries, we support refractory producers and ceramic manufacturers with reliable logistics, technical advice, and flexible packaging options—from 25 kg bags to bulk loads.
▸ 25 kg multi‑wall paper bags, 50 kg bags, 1 MT jumbo bags
▸ 20' FCL: approx 25‑27 MT (palletized or bulk bags)
▸ Private labeling and custom packaging available
▸ It is mainly used as a fine filler and matrix component in refractory castables, gunning mixes, repair mortars, foundry coatings, and high‑temperature ceramics.
▸ We use air classifiers and laser particle size analysers. Each batch is checked for top size (≤75 µm) and median particle size (D50 ~40‑45 µm).
▸ Yes. In addition to 200 mesh, we offer 325 mesh and custom micronised grades upon request.
▸ Absolutely. With alumina contents up to 90% and high true density, it provides excellent hot strength and slag resistance in castables.
▸ The powder is dried to ≤0.5% moisture and packed in moisture‑resistant bags. For long‑distance shipping, we can add pallet wrapping and desiccants.
▸ Yes. Free samples for lab evaluation, TDS, SDS and SGS reports are available upon request.
▸ Contact SEPPE for: • Free Samples • TDS / SDS Documents • OEM Packaging Options • Bulk Container Pricing
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