Quick Detail:
Leadsun Bauxite (also known as bauxite or aluminous earth) is a high-purity refractory raw material primarily composed of alumina (Al₂O₃), with impurities such as iron oxide, silica, and titanium oxide. It appears white, off-white, brown, or light red depending on iron content, and features high density (3.45 g/cm³), hardness, and refractoriness. Insoluble in water but soluble in sulfuric acid and sodium hydroxide solutions, it is a crucial raw material for aluminum smelting and high-performance refractory products.
| Grade |
Al₂O₃ % |
Fe₂O₃ % |
TiO₂ % |
K₂O+Na₂O % |
CaO+MgO % |
Bulk density g/cm³ |
| 50-60 |
50-60 |
≤3.0 |
≤4.0 |
≤0.3 |
≤0.5 |
≥2.45 |
| 60-70 |
60-70 |
≤3.0 |
≤4.0 |
≤0.3 |
≤0.5 |
≥2.65 |
| 75 |
75min |
≤3.0 |
≤4.0 |
≤0.3 |
≤0.5 |
≥2.70 |
| 80 |
80min |
≤3.0 |
≤4.0 |
≤0.3 |
≤0.5 |
≥2.80 |
| 85 |
85min |
≤2 |
≤4.0 |
≤0.3 |
≤0.5 |
≥3.00 |
| 86 |
86min |
≤2 |
≤4.0 |
≤0.3 |
≤0.5 |
≥3.10 |
| 87 |
87min |
≤2 |
≤4.0 |
≤0.3 |
≤0.5 |
≥3.20 |
| 88 |
88min |
≤1.8 |
≤4.0 |
≤0.25 |
≤0.5 |
≥3.25 |
| 90 |
90min |
≤1.8 |
≤4.0 |
≤0.25 |
≤0.5 |
≥3.30 |
Features:
- High Alumina Content: Available in grades from 50% to 90% Al₂O₃ to meet various refractory needs.
- Low Impurity Levels: Controlled Fe₂O₃, TiO₂, alkali, and alkaline earth content for consistent performance.
- High Bulk Density: Ranging from ≥2.45 to ≥3.30 g/cm³, ensuring dense and durable refractory structures.
- Excellent Refractoriness: Withstands extreme temperatures in furnace linings and metallurgical processes.
- Chemically Stable: Resistant to slag corrosion and thermal shock in harsh industrial environments.
- Versatile Applications: Suitable for refractory bricks, castables, cement, and aluminum production.
- Consistent Quality: Strict quality control from mining to processing ensures reliable material properties.
Available Forms:
- Raw Ore: Lumps, granules, or powder
- Calcined Bauxite: Fired at high temperatures to enhance density and stability
- Processed Sizes: 0-1mm, 1-3mm, 3-5mm, 5-8mm, 10-20mm, or as per customer specifications
- Packaging: Bulk bags, ton bags, or customized packaging







Applications:
-
Refractory Industry:
- High alumina bricks, fire clay bricks, mullite bricks
- Refractory castables, plastics, mortars, and coatings
- Ladle linings, tundish linings, blast furnace linings
- Aluminum Smelting: Primary raw material for alumina production
- Abrasive Industry: Raw material for grinding wheels and abrasive tools
- Cement & Ceramics: High-alumina cement, ceramic glazes, kiln furniture
- Welding & Brazing: Flux compositions and welding rod coatings
- Chemical Industry: Catalyst supports, adsorbents, filler materials
Key Advantages:
- ✅ Wide range of alumina content for tailored refractory solutions
- ✅ Low iron and alkali content for improved high-temperature performance
- ✅ High density and mechanical strength for longer service life
- ✅ Consistent chemical and physical properties for reliable production
- ✅ Suitable for both monolithic and shaped refractory products
- ✅ Supports energy-efficient and sustainable industrial processes