Brown Fused Alumina Supplier
Brown fused alumina is made from bauxite through electric-arc melting, crushing and screening. Supply requirements can be discussed for aggregate, graded grains and fines used in bonded abrasives, coated abrasives, blasting and refractory applications.
Specifications, application and selection
Discuss the configuration against your product and site requirements.
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Physical and product data
The following values are transcribed from the product catalog. Confirm acceptance criteria before supply.
| Item | Details |
|---|---|
| Color | Dark brown; dark blue after calcining |
| Crystal system | Trigonal |
| Mohs hardness | ≥9.0 |
| True density | ≥3.90 g/cm³ |
| Bulk density | 1.6–1.99 g/cm³ |
| Melting and processing | Fixed/tilting furnace; Barmac, roll crushing or ball milling |
Grades and chemical data
Percentages follow the source grade table. Confirm the required size and batch specification.
| Grade | Al₂O₃ % | Fe₂O₃ % | SiO₂ % | TiO₂ % |
|---|---|---|---|---|
| Aggregate 0–1 / 1–3 / 3–5 / 5–8 / 8–12 mm | ≥95 | ≤0.3 | ≤1.5 | ≤3.0 |
| Aggregate 25–0 / 10–0 / 50–0 / 30–0 mm | ≥95 | ≤0.3 | ≤1.5 | ≤3.0 |
| Fines 180#–0 | ≥94.5 | ≤0.5 | ≤1.5 | ≤3.5 |
| Fines 200#–0 / 320#–0 | ≥93.5 | ≤0.5 | ≤1.5 | ≤3.5 |
Application review and samples
Provide the abrasive product, current material, process stage and issue to address. For additives, include the resin system and dosage basis; for separators, operating temperature and contact surfaces; for adhesives, substrates and curing process.
Tell us about your manufacturing requirements
Discuss equipment, materials, process and delivery scope.
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