Corundum and Mullite are excellent raw material to produce high quality kiln furnitures as they have high refractories and thermal shock resistance as weel. MAGMA provive Corundum-mullite saggar, mullite tray ,mullite pusher plate and high purity Corundum kiln furniture used in Electronic Ceramic, Magnetic Ceramic, Powered Metallury, MIM and Ferrite sintering processes.
Corundum and Mullite are excellent raw material to produce high quality kiln furnitures as they have high refractories and thermal shock resistance as weel. MAGMA provive Corundum-mullite saggar, mullite tray ,mullite pusher plate and high purity Corundum kiln furniture used in Electronic Ceramic, Magnetic Ceramic, Powered Metallury, MIM and Ferrite sintering processes. It is made by high purity Fused Alumina Powder, Mullite and other fines to ensure very good thermal shock resistance and anti-erosion properties.
In particular, we can make special coatings such as ZrO2 on the working surface to avoid adherence and improve the quality of the Ferrite, Pressure Sensitive Ceramics(PTC) and thermal resistor(NTC). REFMAT has supplied different size and shape for our customers around the world.
| property | mullite | corundum-mullite | corundum | |
| Al2O3 % | ≥ 65 | ≥ 80 | ≥ 92 | |
| SiO2 % | ≤28 | ≤18 | ≤5 | |
| Fe2O3 % | ≤ 1.5 | ≤ 1.2 | ≤ 0.5 | |
| density g/cm3 | ≥2.4 | ≥2.6 | ≥3.7 | |
| Thermal expansion 1000 C | 5 | 6.5 | 7.8 | |
| Refractoriness C | ≥1650 | ≥ 1750 | ≥ 1850 | |
| Thermal stability 1100 C--(cold water)times | ≥ 20 | ≥ 10 | ≥ 5 | |
| Working temperature | ≤ 1350 | ≤ 1450 | ≤ 1500 | |
Kindly let us know the detailed drawings and we shall give best price for you and provide fast delivery and after sales service.
