Kaolin
1. Specifications:
Particles: 0-1mm,1-3mm,3-5mm,5-8mm,8-15mm
Sand:16-30mesh,30-60mesh,60-80mesh,80-120mesh(Mainly for precision casting.)
Powder: 200mesh,325mesh
2. Physical properties
Whiteness | % | ≥85.0 |
325 mesh Screen residue
| % | ≤0.01 |
Density | g/cm³ | 2.62 |
Average particle diameter | a | 0.5 |
Mohs hardness | / | 2 |
Moisture | % | ≤0.4 |
3. Chemical indicators:
Item | KDH45 | KDH45 | KDH44 | KDH44 | KDH43 | KDH42 | KDH40 | KDH36 |
A | B | A | B | |||||
AL 2 O 3 % | 46-48 | 45-48 | 44-48 | 44-48 | 43-48 | 42-46 | 40-46 | 36-42 |
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 | |
K20+Na20 % (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 |
Refractorines °C (min) | 1780 | 1770 | 1760 | 1750 | 1730 | 1710 | 1710 | 1680 |
Impurities % (max) | 0.5 | 1.5 | 2.0 | 2.5 | 3.0 | 3.5 | 4.0 | 5.0 |
4. Applications:
Calcined kaolin is mainly used for manufacturing high-quality refractory products, refractory castable, sagger, kiln furniture, crucibles, ceramic fiber, precision casting sand, ceramics products, etc