Fused Mullite
Description of Fused Mullite:
Fused mullite is a high-purity refractory material made by melting high-purity quartz sand and industrial alumina in an electric arc furnace at a certain ratio and then cooling it.
Fused mullite has the characteristics of well-developed needle-shaped crystals, high flexural strength, uniform expansion, good thermal shock stability, high load softening point, low high-temperature creep, high
hardness, and good chemical corrosion resistance. RongSheng’s fused mullite can be customized according to customer requirements.
Application of Fused Mullite:
Fused Mullite is widely used in manufacturing many refractory products,like the low creep-rupture bricks for the hot-air stove,melting-iron groove or torpedo car,high-temperature industrial kiln,glass melting
furnace,as well as in producing high-temperature saggers or shed planks,etc.
Technique Data of Fused Mullite:
| Item | Unit | Data |
| AL₂O₃ | % | 72-77 |
| SiO₂ | % | 23-29 |
| Fe₂O₃ | % | ≤0.10 |
| R₂O | % | ≤0.50 |
| RO | % | ≤0.30 |
| Mullite Phase Content | % | ≥95 |
| Glass Phase Content | % | ≤5 |
| True Density | g/cm³ | ≥3.2 |
| Refractoriness | ℃ | ≥1840 |
| Grain Size | mm | 0-1,1-3,3-5 |
| Powder Size | mesh | -200,-325 |
