WATER FILTER ANTHRACITE COAL
Materials Anthracite coal is one of the ideal filter materials, and is widely used in large-scale treatment works such as feed water and waste water.
FEATURES OF ANTHRACITE COAL
| Ash (%) | Volatilily (%) | Sulphur (%) | Carbon (%) | Calorie (Kcal/kg) | Solubility in HCl (%) | Porosity (%) | Density (g/cm3) | Friability (%) |
| 5 – 8 | 5 – 7 | < 0,6 | > 85 | > 7.800 | > 1,4 | > 50 | > 1,4 | < 15 (750 lần/15phút) |
* Preeminent characteristics of Anthracite coal
- High Cacbon and Low Sulphur
It does not affect the environment as well as health of people and creatures before and after the purification
- High Porosity
Anthracite coal has a lot of sides and different shape, therefore it has high porosity (>50%). Consequently, during the purification:
- + Retain most waste matters
- + Extend purification period
- + Increase productivity
- Light and smooth
Compared to sand, anthracite coal is lighter and surface is smoother , accordingly the purification can save time and water.
GRAIN SIZE DISTRIBUTION
| Product | Effective Diameter (mm) | Uniform Coefficient |
| 0.7-1.4 | 0.57 – 0.63 | 1.2 – 1.4 |
| 0.9-1.4 | 0.855 – 0.945 | 1.2 – 1.4 |
| 1.0-1.4 | 0.95 – 1.05 | 1.2 – 1.4 |
| 1.2-1.4 | 1.14 – 1.26 | 1.2 – 1.4 |
| 1.5-1.4 | 1.425 – 1.575 | 1.2 – 1.4 |
| 2.0-1.4 | 1.9 – 2.1 | 1.2 – 1.4 |
GRAIN SIZE DISTRIBUTION GRAPH
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