Brown Fused Alumina section sand is made from bauxite fused in high temperature.It is characterized by high purity, high crystallinity, lower expansion coefficient, refractoriness above 1900℃, it’s the best raw material for refractory.
Use |
Specification | Main Chemical Index % | Magnetic Material | |||||
| Al2O3 | Fe2O3 | SiO2 | TiO2 | CaO+MgO | ||||
| Refractory | Section sand | 0-1mm | 95.3-96.5 | <0.3 | <1.00 | >1.6 | ≤0.55 | <0.05% |
| 1-3mm | ||||||||
| 3-5mm | ||||||||
| 5-8mm | ||||||||
| Physical Index | |
| Color | Brown |
| Refractoriness | >1900℃ |
| Melting Point | 2050℃ |
| Compression Strength | 34N |
| Molded Toughness | 85% |
| Vickers Hardness | 2100HV |
| True Specific Gravity | 3.97g/cm3 |
| Grain Composition | upper limit <5%, lower limit <5% (Gap between upper limit and lower limit not over 10%) Or per client’s standard |
