White Alumina Oxide HS Code 28181090, CAS No. 1344-28-1, is a high purity, synthetic mineral, manufactured by the fusion of controlled quality pure grade Bayer Alumina in an electric arc furnace at temperatures greater than 2000 °C followed by a slow solidification process. Strict control over quality of raw materials and fusion parameters ensure products of high purity and high whiteness.
The cooled crude is further crushed, cleaned of magnetic impurities in high intensity magnetic separators and classified into narrow size fractions to suit the end use. Dedicated lines produce products for different applications.
White Alumina Oxide is highly friable and hence used in Vitrified Bonded Abrasives products where cool, fast cutting action is essential and also in the manufacture of high purity Alumina refractories. Other applications include use in Coated Abrasives, Surface treatment, Ceramic Tiles, Anti-Skid Paints, Fluidized Bed Furnaces and Skin / Dental Care.
1. Basic Indicators
| Molecular Formula | Al2O3 |
| Appearance | White powder |
| CAS No. | 1344-28-1 |
| HS Code | 28181090 |
2. Physical properties
| Color | White |
| Crystal shape | α-Al2O3 Trigonal |
| Hardness(mohs) | ≥9.0 |
| Micro Hardness | HV2200-2300 |
| Melting Point (℃) | 2250 |
| True Density (g/cm3) | ≥3. 97 |
| Bulk Density(g/cm3) | 1.75-1.95 |
| Linear Expansion Coefficient(0—1600℃) | 8.3 |
3.Typical chemical analysis
Al2O3: 99,50%
Na2O+K2O: 0,25%
Fe2O3: 0,02%
SiO2: 0,03%
CaO: 0,10%
C: 0,05%
All data based upon RunLong Enterprise standard test methods. We could supply grit size according to FEPA, JIS, ANSI, GB & P Standard.
4. Applications
1.For precision casting and high-grade refractory.
2. For bake lining ,Catalyst carrier ,friction products
3.For pressure blasting hard abrasives;Refractory industry
4.For wet and dry blasting ,grinding,lapping and polishing media
5.For abrasive tools: grinding wheel, Lapping and polishing non-skid title;
6.For bonded and Coated abrasives ,Thermal Spraying (Plasma Spraying)
7.For lapping & Micro-Blasting applications .refractories,Ceramics and Tiles
5. Packing and storage
Packing: Double coated plastic woven / paper bag, net weight 25kg.
Big bag packing, net weight 1000kg / 1250kg per clients’ request
Storage: Dry, ventilated, moisture proof.
