High alumina WFA for refractory castable
Product Introduction of High alumina WFA for refractory castable
High alumina WFA for refractory castable is a high Al2O3 powder. It is mostly used for refractory applications and foundry applications. WFA fine powder is of high thermal resistance, high strength, high density, and high anti-corrosion ability. Moreover, WFA fine powder is also a good addtives for thermal conductive products in semicondustor industry.
Typical physical properties of High alumina WFA for refractory castable
| Hardness: | Mohs:9.0 |
| Maximum service temperature: | 1900 Degree |
| Melting Point: | 2250 Degree |
| Specific Gravity: | 3.95g/cm3 |
| Volume density | 3.6g/cm3 |
| Bulk density(LPD): | 1.55-1.95 g/cm3 |
| Color: | White |
| Particle shape: | Angular |
Typical chemical composition of High alumina WFA for refractory castable
| AL2O3 | 99.28% |
| SiO2 | 0.14% |
| NA2O | 0.27% |
| Fe2O3 | 0.05% |
| CaO | 0.03% |
Product features of High alumina WFA for refractory castable
- High refractoriness. It can resistant to high temperatures up to 1900°C.
- High strength with Mohs hardness of 9.0.
- High density, thus it can increase the wear resistance of castables.
- Resistant to most acid and alkali.
- Chemical stability, so it won’t get eroded by molten steel.
Applications of High alumina WFA for refractory castable
- Refractory castable, Kiln construction as well as ladle repair.
- Foundry coating paint for casting for shell molding.
- Mixed with sintered alumina and Calcium chlorate cement. In that way, the castable will get a higher density and lower apparent porosity.
- Foundry coating for Precision casting and 3D printing.
- Thermal conductive applications such as thermal conductive glue and additives.
Production details of white fused alumina
Product Qualification of white fused alumina
Packing of high alumina WFA for refractory castable
25KGS/PVC Bag
1Metric Ton/Jumbo Bag
25KGS/PVC Bag,40Bags/Jumbo Bag
1 Metric Ton/Jumbo Bag/Pallet
In the meantime, other customized packages are available.
FAQ
Q: Are you a manufacturer or trading company?
A: We are a manufacturer of High alumina WFA . HAIXU Abrasives began to produce white fused alumina in 1999. So we could provide professional service to customers. We produce White fused alumina section sand, White fused alumina grains, White fused alumina powder, etc.
Q: What about the difference between White fused alumina 325#-0 powder and 320 mesh micro powder?
A: The White fused alumina 325#-0 powder is get from the milling and mesh sieving process. It’s more suitable for filler of refractory products. On the other hand, the White fused alumina 320 mesh is get from a water suspension treating process. It’s more suitable for polishing and lapping.
Q: Are the White fused alumina grains you get is produced from a Tilting furnace or a Fixing furnace?
A: Our white fused alumina grains F8-F220 are produced from fixing furnaces. Fixing furnace white fused alumina is of higher toughness and more durable.
Q: What is the content of Na2O of white-fused alumina material?
A: We have normal Sodium WFA grain and low Sodium WFA grain. Normal WFA grain Na2O content is max. 3%. It is even lower than most competitors. And low sodium WFA grain Na2O content is only max.0.1%.
Q: Do you have a MOQ of WFA powder?
A: Basically, there is no limit to MOQ. For instance, 25kgs(1 bag)is ok for us. But the logistic cost will be higher than normal.
Q: How do you make quality control on White fused alumina before delivery?
A: Firstly,we inspect the chemical content of WFA material. Secondly, we check particle size distribution and milling toughness. In addition, we check the bulk density of white fused alumina, the whiteness of white fused alumina, etc.
Q: What is the lead time of FCL White fused alumina?
A: Generally, 7-10 days after receiving the deposit.
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