Water Treatment · Media Filters
Anthracite
Overview
Anthracite is a premium filtration medium derived from deep-mined anthracite coal, selected for its high carbon content, low volatile matter, and exceptional structural hardness. Specialized crushing and hydraulic classification create angular particles of uniform size — ideal for trapping suspended solids in dual-media and multimedia filter beds.
Applications
- Dual-media filtration — remains atop the filter bed to capture larger particles
- Multimedia filters — pairs with sand and other media for multi-layered filtration
- Industrial and drinking water clarification
Specifications
| Appearance | Black, granular |
| Specific gravity | 1.45 ±3% |
| Bulk density | 650 kg/m³ ±5% |
| Fixed carbon (DAF) | 93% |
| Ash content | < 4% |
| Moisture | < 2% |
| Sulphur | < 0.90% |
| Acid solubility (1:1 HCl) | 1% max |
| Hardgrove grindability index | 50 |
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