Refractory Activated Alumina Pellets Ideal For Insulating Brick Castables
Bubble Alumina
Product Description
Its main raw material is high quality alumina powder. After melting through the electric arc furnace, blowing and then instantaneously cooling in air, the alumina bubble will have the characteristics of light weight, closed hole and high temperature resistance. It is the ideal heat-insulated filler for high temperature furnaces, as well as the high quality aggregate for high temperature light refractory castable.
Alumina bubble as the main material can be made into various shapes of products, with the service temperature 1800 ℃. The finished products have the high mechanical strength, which is several times higher than general light products, while its bulk density is the half of corundum products
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.
Physical And Chemical Properties
|
Index Properties |
Type 1 | Type 2 | |
| Chemical composition (%) | Al2O3 | 98.5min | 99min |
| SiO2 | 0.5-1.2 | 0.3max | |
| Fe2O3 | 0.1max | 0.1max | |
| Na2O | 0.4max | 0.4max | |
| Packing density (g/cm3) | 0.5-1.0 | ||
| Damaged rate(%) | ≤10 | ≤10 | |
| Refractoriness(°C) | 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 | ||
Package
1 ) . In 1MT Big Bag
2 ) . 25KG PP Big Bag In 1MT Big Bag
3 ) . Custom-made packing as required
FAQ
Q : Do you provide free samples?
A : Of course! Customized samples are needed. The mass production will be started after we get your confirmation on this sample. However, shipping costs are paid by you.
A : It usually needs about 7-14 days after receiving the workable payment.
Q : What is your payments term?
A : We can accept 30% deposit, 70% balance to be against the BL copy or by LC, or other payment terms.
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.