China Casting Chamotte Sand Mullite Sand for Precision Casting, Find details about China Flint Clay, Calcined Fire Clay from Casting Chamotte Sand Mullite Sand for Precision Casting
Item | Supper Grade | First level | second level | Third level |
Al2O3 % | 45-46 | 44-45 | 43-45 | 43-44 |
Fe2O3% | 0.8-1 | 1-1.2 | 1.5-1.8 | 2.0-3.0 |
SiO2% | 52-53 | 51-52 | 50-51 | 50-51 |
Na2O+K2O% | 0.3-0.4 | 0.4-0.5 | 0.4-0.5 | 0.4-0.5 |
Ti02 % | 0.1-0.2 | 0.2-0.3 | 0.2-0.3 | 0.2-0.3 |
Ca0+Mg0 % | 0.5-0.6 | 0.5-0.6 | 0.5-0.6 | 0.5-0.6 |
Bulk density g/cm3(min) | 2.5g/cm3 | 2.45g/cm3 | 2.45g/cm3 | 2.4g/cm3 |
Refractoriness °C (min) | ≥1750ºC | ≥1650ºC | ≥1550ºC | ≥1450ºC |
Water content(%) | 0.03% | 0.03% | 0.03% | 0.03% |
Burning reduction(%) | ≤0.3-0.4% | ≤0.4-0.5% | ≤0.5-0.6% | ≤0.6-0.8% |
Dust content(%) | ≤0.01-0.03% | ≤0.01-0.03% | ≤0.01-0.03% | ≤0.01-0.03% |
PH value | 7-9 | 7-9 | 7-9 | 7-9 |
Particle size | 8-16mesh,16-30mesh,30-60mesh,60-80mesh,80-120mesh |