Alumina bubble,alumina hollow ball:
1.has passed ISO
2.samll weight,obturator hole
3.can resist high temperature
1.has passed ISO
2.samll weight,obturator hole
3.can resist high temperature
Alumina Bubble,Alumina Hollow Ball,Alumina Refractory Hollow Ball
Alumina hollow ball is a new kind of high temperature insulating materials.It is made of chemical Al2O3 by high temperature melting.The characteristics of alumina hollow ball is qualitative light,blind hole and high temperature resistance.
Alumina hollow ball is an ideal insulating filling materials for high temperature furnace,also good aggregate of high temperature light weight refractory castables.
Specification Data:
| Items | guarantee value typical value |
| Al2O3,% | ≥98.5 99.48 |
| Bulk density,g/cm3 | 0.5~1.0 0.74 |
| Broken rate,% | ≤15 12 |
| Refractoriness,°c | 1800 |
| Grain size,mm | Φ5~0.2 |
| Packing | damp-proof woven bag packing,20kg/bag,or as your demands |
| Usage | high temperature light weight catable&insulating filler for high temperature furnace |