High-alumina Calcined Kaolin for Foundry sand and Refractory
material
(0-1mm,1-3mm,3-5 mm,16-30mesh,30-60mesh,200mesh)
1. Production Introduction and Application
Size of sand: 8-16,16-30,30-60,30-80,60-80,80-120 (mesh):Used for
investment casting.
Size of powder: -200mesh,-270mesh,-325mesh: Used for investment
casting and refractories.
Size of particles: 0-1mm,1-3mm,3-5mm,5-8mm,8-15mm,0-5mm,0-50mm:Used
for refractories.
2. Specification
| AL2O3 % | 46-48 | 45-48 | 44-48 | 44-48 | 43-48 | 42-46 | 40-46 | 36-42 |
| SiO2 % | 49-52 | 49-52 | 50-53 | 50-53 | 50-53 | 50-53 | 50-54 | 50-55 |
| Fe2O3 % (max) | 1.0 | 1.15 | 1.3 | 1.5 | 2.0 | 2.5 | 3.0 | 3.5 |
| Ti02 % (max) | 0.8 | 0.8 | 0.9 | 0.9 | 1.0 | 1.1 | 1.2 | 1.3 |
| K2O+Na2O % (max) | 0.3 | 0.3 | 0.4 | 0.4 | 0.4 | 0.5 | 0.5 | 0.6 |
| Ca0+Mg0 % (max) | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.6 | 0.7 | 0.8 |
| Bulk density g/cm³(min) | 2.58 | 2.55 | 2.52 | 2.50 | 2.45 | 2.40 | 2.37 | 2.30 |
| Refractoriness °C(min) | 1780 | 1770 | 1760 | 1750 | 1740 | 1720 | 1710 | 1700 |
| Impurities % (max) | 0.5 | 1.5 | 2.0 | 2.5 | 3.0 | 3.5 | 4.0 | 4.5 |
0-1mm
1-3mm
3-5mm
5-8mm
We have different grades of mullite sand for you to choose.
Grade I(200mesh,30-60mesh,16-30mesh)
Grade II(200mesh,30-60mesh,16-30mesh)
Grade III(200mesh,30-60mesh,16-30mesh)
