Material 01 · CB
Calcined Bauxite.
A high-alumina raw material for refractory, abrasive and anti-skid applications — controlled chemistry and high refractoriness.
Calcined BauxiteChirag Fuels
11 gradesSpecifications
- Alumina (Al₂O₃)
- 70–90%
- Iron oxide (Fe₂O₃)
- 2.0–4.5%
- Sintering temperature during production
- 1600–1700°C
- Bulk density
- 2.90–3.25gm/cc
Overview
What calcined bauxite is for.
Chirag Fuels manufactures high-quality calcined bauxite through controlled sintering at 1600–1700°C, forming stable phases like corundum and mullite.
The product offers high refractoriness, consistent chemistry, and reliable performance for steel, foundry, glass, cement, and refractory applications.
Available in lumps, graded fractions, and fine powders as per customer requirements.
- High refractoriness
- Homogeneous grain size
- High bulk density
- Ideal phase distribution
Forms & production
- Available forms
- Lumps, graded fractions, and fine powders as per customer requirements.
- Available grades
- High ferric grade, low ferric grade and special grade. Special-grade specifications are shared on request.
- Production
- Controlled sintering at 1600–1700°C forms stable phases like corundum and mullite. Produced at the Chirag Fuels Pvt. Ltd. plant in Porbandar, which also produces abrasive bauxite.
- Installed capacity
- 40 KT (production capacity, FY 2025).
Specifications
Find your grade.
Switch between grade families, then select a grade to see its full specification.
CB 86 LF
Low ferric series
Chemical & physical properties
Tolerance ±1%
- Fe₂O₃ · %
- 2.2 (±0.2%)
- SiO₂ · %
- 6.0 (±2%)
- CaO · %
- 1.5 (±0.5%)
- TiO₂ · %
- 4.0 (±0.5%)
- Bulk density · gm/cc
- 3.15 Min
Produced from selected high-grade bauxite with controlled Fe₂O₃ content. Designed for applications requiring low iron, offering high refractoriness, thermal stability, and consistent quality.
Low ferric grade specifications
Scroll sideways to compare grades| Property | CB 70 LF | CB 75 | CB 80 LF | CB 80 | CB 82 | CB 85 | CB 86 LF |
|---|---|---|---|---|---|---|---|
| Al₂O₃% | 70.0 (±1%) | 75.0 (±1%) | 80 (±1%) | 80 (±1%) | 82 (±1%) | 85 (±1%) | 86 (±1%) |
| Fe₂O₃% | 2.0 (±0.2%) | 3.0 (±0.2%) | 2.2 (±0.2%) | 3.0 (±0.2%) | 3.0 (±0.2%) | 3.0 (±0.2%) | 2.2 (±0.2%) |
| SiO₂% | 21.0 (±2%) | 15.0 (±2%) | 10.0 (±2%) | 10.0 (±2%) | 7.0 (±2%) | 6.0 (±2%) | 6.0 (±2%) |
| CaO% | 2.0 (±0.5%) | 2.0 (±0.5%) | 1.5 (±0.5%) | 2.0 (±0.5%) | 2.0 (±0.5%) | 2.0 (±0.5%) | 1.5 (±0.5%) |
| TiO₂% | 4.0 (±0.5%) | 4.0 (±0.5%) | 4.0 (±0.5%) | 4.0 (±0.5%) | 4.0 (±0.5%) | 4.0 (±0.5%) | 4.0 (±0.5%) |
| Bulk densitygm/cc | 2.85–3.0 | 2.9–3.0 | 3.10 Min | 3.10 Min | 3.10 Min | 3.15 Min | 3.15 Min |
High ferric grade specifications
Scroll sideways to compare grades| Property | CB 70 HF | CB 75 HF | CB 80 HF | CB 84 HF |
|---|---|---|---|---|
| Al₂O₃% | 70.0 (±1%) | 75.0 (±1%) | 80 (±1%) | 84 (±1%) |
| Fe₂O₃% | 4.5 (±0.5%) | 4.5 (±0.5%) | 4.5 (±0.5%) | 4.5 (±0.5%) |
| SiO₂% | 19.0 (±2%) | 15.0 (±2%) | 9.0 (±2%) | 6.0 (±2%) |
| CaO% | 2.5 (±0.5%) | 2.5 (±0.5%) | 2.5 (±0.5%) | 2.5 (±0.5%) |
| TiO₂% | 4.0 (±0.5%) | 4.0 (±0.5%) | 4.0 (±0.5%) | 4.0 (±0.5%) |
| Bulk densitygm/cc | 2.9–3.0 | 2.9–3.0 | 3.05 Min | 3.10 Min |
Chemical values in %, with tolerances as specified. Bulk density in gm/cc; “Min” denotes a minimum value.
Applications
Where it works.
High-alumina raw material used in refractory, abrasives, and anti-skid applications, offering excellent thermal stability and durability.
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High refractoriness and consistent chemistry for monolithic refractory formulations such as castables.
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A high-alumina raw material for refractory bricks and mortars.
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Used in high-friction surface treatments and anti-skid road applications.
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Supplied as a raw material for welding-flux applications.
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High-ferric grades serve abrasive-grade applications for brown fused alumina production.
Packaging & supply
Packed for your supply chain.
Packed with care and delivered efficiently — containerized and bulk dispatch options.
Packaging options
Logistics
- Domestic dispatch across India
- Containerized export shipments (20ft / 40ft)
- Bulk dispatch handling
- Timely & secure delivery
- Supply in FOB, CIF and DDU terms
Related materials
Enquire about Calcined Bauxite
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