Fused magnesia-alumina spinel is made of high-quality industrial alumina and high-purity light-burned magnesia as the main raw materials, and is melted at a high temperature of more than 2000℃ in an electric arc furnace. It has the characteristics of high bulk density, good thermal stability, good slag resistance, good thermal shock stability, strong erosion resistance, strong corrosion resistance, and high temperature resistance. It is widely used in medium and high-grade shaped and unshaped refractory materials, steel smelting, cement rotary kilns and glass industrial kilns.
Declare sample name: Fused magnesia-alumina spinel
| Test Products | Al2O3(%) | SiO2(%) | Fe2O3(%) | MgO(%) | Apparent porosity(%) | Bulk density(%) |
| Fused magnesia-alumina spinel 72% | 70-74 | ≤0.4 | ≤0.25 | 23-27 | 5 | 3.3 |
| Fused magnesia-alumina spinel 75% | 74-77 | ≤0.4 | ≤0.25 | 21-24 | 3 | 3.3 |
| Fused magnesia-alumina spinel 78% | 77-82 | ≤0.4 | ≤0.25 | 16-21 | 3 | 3.3 |
| Fused magnesia-alumina spinel 85% | 82-87 | ≤0.4 | ≤0.25 | 11-16 | 3 | 3.3 |
1. Fused aluminum-magnesium spinel is widely used in the steel, cement and industrial kiln industries.
2. It is mainly used to produce high-grade aluminum-magnesium bricks, high-performance aluminum-magnesium castables, sliding nozzles, ladle lining bricks, continuous casting slides, nozzle bricks and open-hearth furnace roof bricks, etc.
3. It can improve the thermal shock resistance of the material and has good spalling resistance.
4. It is an ideal raw material for replacing magnesium-chromium refractory materials. It can effectively improve slag resistance and thermal shock resistance when used in refractory products, prefabricated parts and unshaped refractory materials.
