Parameters of Russian origin coal I. Fine steam coal | No. | Parameters | Symbol | Unit | Class 22 | Class 25 | Class 22 | | 1 | Coal size | - | mm | 0-25 | 0-25 | 0-50 | | 2 | Calorific value | Qri | MJ/kg | min. 22 | min. 25 | min. 25 | | 3 | Ash content | Ar | % | max. 15 | max. 12 | max. 14 | | 4 | Sulphur content | Srt | % | max. 0.4 | max. 0.4 | max. 0.4 | | 5 | Moisture content | Wrt | % | max. 14 | max. 12 | max. 14 | | 6 | Volatile matter | Vdaf | % | min. 35 | min. 35 | min. 35 |
II. Lump coal | No. | Parameters | Symbol | Unit | Pea coal | Pea coal | Nut coal | Unsized II | | 1 | Coal size | - | mm | 25-50 | 25-50 | 50-100 | 50-300 | | 2 | Calorific value | Qri | MJ/kg | min. 25 | min. 22 | min. 25 | min. 25 | | 3 | Ash content | Ar | % | 10 | 12 | 10 | 10 | | 4 | Sulphur content | Srt | % | 0.4 | 0.4 | 0.4 | 0.4 | | 5 | Moisture content | Wrt | % | 12 | 12 | 12 | 12 | | 6 | Volatile matter | Vdaf | % | min. 35 | min. 35 | min. 35 | min. 35 |
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