Compact Structure Calcined Kaolin Powder High Bulk Density
Quality Calcined Flint Clay Kaolin for Refractories or Foundry Casting Investment
1. Calcined Flint Clay Introduction
Standard flint clay ore Al2O3 content is 38%,Al2O3 content is about 44% after calcined, Fe2O3 < 2%. Stable composition, uniform texture,compact structure, cross section assumes the shells, white, used in the production of high quality clay refractory materials.
2. Calcined Flint Clay Specifications
| Item/Grade | FC45 | FC44 | FC43 | FC42 | FC40 |
| AL2O3 % | 46-48 | 44-48 | 43-48 | 42-46 | 40-46 |
| SiO2 % | 49-52 | 50-53 | 50-53 | 50-53 | 50-54 |
| Fe2O3 % (max) | 1.0 | 1.3 | 2.0 | 2.5 | 3.0 |
| Ti02 % (max) | 0.8 | 0.9 | 1.0 | 1.1 | 1.2 |
| K2O+Na2O % (max) | 0.3 | 0.4 | 0.4 | 0.5 | 0.5 |
| Ca0+Mg0 % (max) | 0.5 | 0.5 | 0.5 | 0.6 | 0.7 |
| Bulk density g/cm³(min) | 2.58 | 2.52 | 2.45 | 2.40 | 2.37 |
| Refractoriness °C(min) | 1780 | 1760 | 1740 | 1720 | 1710 |
| Impurities % (max) | 0.5 | 2.0 | 3.0 | 3.5 | 4.0 |
3. Calcined Flint Clay General advantages
- High refractoriness.
- Stable physical characteristics.
- High bulk density.
- Low porosity.
- Low water absorption.
- Completely calcined evenly.
- Low impurity contents.
4. Calcined Flint Clay Characteristics
- High refractoriness.
- Physicochemical stability.
- Bulk density high.
- Low porosity.
- Low water absorption.
- Fully calcined
- Low impurity content.
- Pure white.
5. Calcined Flint Clay Applications
Used in the production of highgrade refractory materials, manufacturing ceramic, aluminum silicate refractory fiber production and military industry, etc.
6. Calcined Flint Clay Particle sizes Available
- 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 particle: 0-1mm,1-3mm,3-5mm,5-8mm,8-15mm,0-5mm,0-50mm:Used for refractories.
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