Send InquiryFused Bubble Alumina
Fused Bubble Alumina Specification
- Application
- Refractory materials
- Product Type
- Fused Bubble Alumina
- Types of Refractories
- High-performance refractories
- Shape
- Rounded bubbles
- Porosity
- Low
- Dimensional Stability
- Excellent at high temperatures
- Strength
- High strength under thermal stress
- Specific Gravity
- 3.5 g/cm (approximate)
- Thermal Conductivity
- Low
- Chemical Composition
- Alumina (Al2O3)
- Color
- White
About Fused Bubble Alumina
Process of Production and Application :
Fused Bubble Alumina is produced by blowing the melt of high purity Bayer process alumina in a controlled atmosphere to produce hollow spheres. Due to its low density and extremely low thermal conductivity fused alumina bubble is ideal for high alumina based insulating bricks and castables.
Technical Specification :
| Index Properties | Type 1 | Type 2 | ||
| Chemical composition (%) | AI2O3 | 98.5 min | 99min | |
| SiO2 | 0.5-1.2 | 0.3 max | ||
| Fe2O3 | 0.1 max | 0.1 max | ||
| Na2O | 0.4 max | 0.4 max | ||
| Packing Density ( g/cm2 ) | 0.5-1.0 | |||
| Damaged rate (%) | < 10 | < 10 | ||
| Refractoriness oC | 1800 | |||
| Particle Size | 5-0.2mm, 0.2-1mm, 1-3mm, 3-5mm, 0.2-0.5mm, 1-2mm, 2-3mm | |||
| Test standard | GB/T3044-89 | |||
| Packing | 20Kg / Plastic Bag | |||
| Usage | Refractories | |||
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More Products in Refractory Minerals Category
Brown Fused Alumina
Shape : Other, Granular, angular
Melting Point : Approximately 2050C
Hardness (%) : Mohs hardness: 9
Porosity : Low
Color : Brown
Usage & Applications : Used in abrasive tools, sandblasting, refractory linings, nonslip flooring, wearresistant surfaces
White Fused Alumina
Shape : Other, Angular
Melting Point : Over 2000C
Hardness (%) : 9 Mohs scale (approximately 99% of corundum hardness)
Porosity : Very low
Color : White
Usage & Applications : Suitable for abrasives, refractories, surface preparation, and precision casting
Crushed Ceramic Grains
Shape : Other, Angular, irregular grains
Melting Point : Up to 1800C
Hardness (%) : 78 Mohs
Porosity : Low to medium porosity
Color : Light brown to offwhite
Usage & Applications : Sand blasting, coatings, surface finishing, antislip layer, foundry, refractory industry
Fused Zirconia Mullite
Shape : Other, Block, brick, granular, powder
Melting Point : Approximately 18501900C
Hardness (%) : High
Porosity : Low
Color : White to offwhite
Usage & Applications : Steel, glass, ceramics, cement, and petrochemical industries as insulating refractory material
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