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White fused alumina fine powder -325
White fused alumina fine powder from 0 to a 45μm particle size in segment sand is also called -325 mesh fine powder, which can be directly used as refractory materials or further processed into a micro powder. White fused alumina (WFA), also named white aluminium oxide, white corundum. It’s made from high-quality industrial alumina powder, which is melted in an electric arc furnace at over 2,000 degrees. It is then cooled, crushed and shaped, magnetically separated to remove iron, and sieved into various particle sizes.
Introduce white fused alumina fine powder -325:
White fused alumina is from the reduced fusion of high purity alumina powder containing aluminium oxide(Al2O3). White fused alumina has a very high refractory temperature and acid resistance. Alkali corrosion resistance is stable in chemical content and has high true gravity/density, low porosity rate, and thermal shock resistance. It’s an excellent corundum aluminium oxide refractory material. White fused alumina is an essential high-end material for producing shaped and unshaped refractory products.
Chemical composite and physical properties of white fused alumina fine powder -325:
| Items | Powder |
| Al2O3 | 99.2%min |
| SiO2 | 0.10%max |
| Fe2O3 | 0.10%max |
| Na2O | 0.40%max |
| Melting point(℃) | 2250 |
| Real density(g/cm3) | 3.90min |
| Refractoriness （℃） | ≥1900 |
| Color | White |
| Size | 325mesh |
Product features of white fused alumina fine powder -325:
- High refractoriness. It can resistant to high temperatures up to 1900°C.
- High strength with Mohs hardness of 9.0.
- High density.
- Resistant to most acid and alkali.
- Chemical stability.
- Low expansion rate.
Applications of white fused alumina fine powder -325:
- Refractory castable, Kiln construction.
- Foundry coating paint for casting for shell moulding.
- Foundry coating for Precision casting and 3D printing.
- Thermal conductive glues or additives.
White Fused Alumina（FAQ）
Amount of abrasive applied:
This decision is made by knowing the type of material you will be working with. Open Coat – Here, the abrasive granules cover from 50% – 70% of the backing and are set at pre-determined spacing to reduce loading. Used on softer surface materials that tends to load or fill
What is your terms of delivery?
EXW, FOB, CFR, CIF, DDU.
What is silicon carbide?
Silicon carbide is a chemical compound of silicon and carbon and belongs to the group of carbides. The chemical formula is SiC.Silicon carbide is at the same time the hardest and lightest ceramic material and is also highly resistant against acids and alkaline solutions.
What is the hardness?
Hardness is rated from A-Z with ‘A’ being the weakest bond and ‘Z’ being the strongest. A weak bond is preferred for grinding harder materials while a stronger bond is desired for softer materials. A typical weak bond for steel would be in the ‘F, G or H’ range. A
How do i know what abrasive is best for my application?
An abrasive’s shape, hardness, and particle size really determine the effectiveness of a MicroBlasting application. Each application is unique, and abrasive selection depends on the composition of the targeted part and the application’s desired result. See our Abrasive Media Selection Guide to choose the most appropriate abrasive for your application.
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White Fused Alumina Products
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