| Quantity: | |
|---|---|
0-1mm,1-3mm,3-5mm,5-8mm
SEPPE BAUXITE
25083000
REFRACTORY & ANTI-SLIP GRADES / ROTARY & SHAFT KILNS
High-alumina grains and fines for refractory formulations and anti-slip surfaces. Available from rotary-kiln and shaft-kiln production, with alumina content, grain properties and sizes selected for each application.
0–1 mm
1–3 mm
3–5 mm
200 mesh
Calcined Bauxite · Grades and Sizes to Suit Your Application
The linked TDS covers rotary-kiln material. Request the corresponding technical data for your selected grade and production route.
Calcined bauxite is made by heating selected bauxite ore to develop a hard, dense ceramic structure. The calcined material is then crushed, screened or milled into aggregate and fine fractions.
The product family includes grades for refractory formulations and selected grades for anti-slip surfacing. Alumina content ranges from 75–90%, depending on the grade; the material should be selected by its full specification, not alumina content alone.
Choose the alumina and impurity profile needed for your refractory formulation or anti-slip aggregate specification.
Ordered fractions support aggregate packing, fine-particle formulation or the required surface texture.
Rotary-kiln and shaft-kiln supply options are available. The appropriate route depends on the material and ordered grade.
Select the application first, then confirm the chemical profile, physical properties and particle-size distribution.
Al₂O₃: 75–90%, depending on grade. Common grade designations include 75, 80, 85, 87 and 88. Specify the corresponding oxide limits and grain properties for the formulation.
The designated SEPPE road-surfacing grade is specified at Al₂O₃ ≥80% (typically 82–85%), PSV ≥70 and 1–3 mm. These values apply to that grade, not the entire calcined bauxite range.
Common aggregate fractions include 0–1 mm, 1–3 mm, 3–5 mm and 5–8 mm. Fine powders and other fractions can be specified to suit the recipe.
1–3 mm is the main size for the dedicated road-surfacing product. A 3–5 mm option can be discussed where the binder system and project specification permit it.
Grade designations are selection references. Confirm the actual specification and sieve distribution for the material being ordered.
From shaped bricks and cast-in-place refractories to high-temperature linings and anti-slip surfaces, each application calls for a matching material grade and particle size.
Application images are illustrative. Suitability depends on the complete refractory formulation or surfacing system.
The following reference profile summarises the product-family data. It is not a single specification shared by all grades; use the technical data for the selected material to define purchase requirements.
| Alumina (Al₂O₃) | 75–90% — depending on grade |
|---|---|
| Silica (SiO₂) | 6–18% |
| Iron oxide (Fe₂O₃) | 0.5–2.5% |
| Titanium dioxide (TiO₂) | 2–3% |
| Calcium oxide (CaO) | 0–0.4% |
| Magnesium oxide (MgO) | 0–0.2% |
| K₂O + Na₂O | 0–0.4% |
| Bulk Density | 2.80–3.25 g/cm³ — reference |
|---|---|
| Loss on ignition | 0.1–0.5% |
| Moisture content | 0.1–0.3% |
| Grain shape | Angular |
| Hardness | 7.5–9.0 Mohs — grade-dependent |
| Refractoriness | Specify by refractory grade |
| PSV / abrasion properties | Specify by anti-slip grade |
Ranges describe different material grades and should not be combined into one assumed composition. For the selected anti-slip grade, use its dedicated data rather than applying every family reference range.
Density must be compared using the same measurement basis. Refractoriness is a material-test property, not a universal operating-temperature rating for a finished lining.
SEPPE supplies calcined bauxite produced through rotary-kiln and shaft-kiln routes. Selected ore is calcined, then crushed, screened and, where required, milled into the ordered fractions.
Feedstock selected for the target calcined grade.
Facilities for material processing and supply.
The two kiln types are alternative calcination routes, not consecutive production stages or fixed labels for the two application groups. Final suitability follows the grade specification.
Supply options include 50 kg bags and jumbo bags in agreed formats. Packing weight, labelling and shipment arrangements are confirmed with the order.
Container loading depends on the bag format, shipping route and transport limits. Custom marking and other packing requirements can be discussed before dispatch.
The main applications are refractory formulations and anti-slip surfacing. The required chemistry, grain properties and sizes differ between applications.
The product-family range is Al₂O₃ 75–90%, depending on grade. Confirm the minimum alumina content and accompanying oxide limits for the specific material; there is no single 85% minimum across the whole range.
Yes. Both production routes are included in the supply range. Select the grade by its specification and intended use rather than kiln name alone.
No. Choose an anti-slip grade with the required polishing resistance, abrasion properties and grading. A refractory-grade designation alone does not establish road-surfacing performance.
Common aggregate fractions include 0–1 mm, 1–3 mm, 3–5 mm and 5–8 mm, with fines and other sizes by agreement. The dedicated anti-slip road grade focuses on 1–3 mm.
Yes. Provide your application, required grade, size and quantity so the corresponding sample, technical data and available quality documents can be discussed.
Tell us your application, alumina requirement, particle size, quantity and destination. We can discuss the matching grade, production route and packing options.
