Coal Type | Rank | Carbon % | Moisture % | Ash % | Volatile Matter | Calorific Value (kcal/kg) | Color / Texture | Usage |
Anthracite (Hard Coal) | Highest | 87–95% | Very Low (2–5%) | Very Low | Very Low | ≈ 7500–8500 | Hard, glossy, jet black | Industrial heating, metallurgical processes, water filtration |
Bituminous Coal | High | 70–86% | Low–Medium | Medium (5–20%) | Medium | ≈ 6000–7500 | Black, shiny, layered | Power plants, steel (coking), industries |
Sub-Bituminous Coal | Medium | 60–70% | Medium–High | Medium–High | High | ≈ 4500–6000 | Dull black / dark brown | Power generation, cement industries |
Lignite (Brown Coal) | Low | 45–60% | High (15–30%) | High | High | ≈ 3000–4500 | Brown, crumbly | Low-grade power generation |
