Mullite refractory bricks takes mullite (3Al2O3 · 2SiO2) as raw material. Alumina content is generally between 65% and 75%. In addition to the mullite, other mineral composition can be small amounts of glass phase and cristobalite with lower alumina contains; and a small amount of corundum with higher alumina containing. The mullite brick refractoriness can be up to 1790 ℃. Load softening starting temperature: 1600 ~ 1700 ℃. Cold crushing strength: 70 ~ 260MPa. Good thermal shock resistance.
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| Mullite refractory bricks |
Sintered mullite brick takes high bauxite as the main raw material, which is added with a small amount of clay or raw bauxite as binder, processed by molding and firing.
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