Technical specification of needle coke (calcined coke)
| 項目 |
指標(biāo) |
| YDDH-Ⅰ |
YDDH-Ⅱ |
| Ture density(g/cm³) 真密度(g/cm³)≥ |
2.13 |
2.13 |
| Total sulphur content /%(mass fraction) 硫/%(質(zhì)量分?jǐn)?shù))≤ |
0.35 |
0.40 |
| Nitrogen / %(mass fraction) 氮/%(質(zhì)量分?jǐn)?shù))≤ |
0.35 |
0.50 |
| Volatile matter content / %(mass fraction) 揮發(fā)分/%(質(zhì)量分?jǐn)?shù))≤ |
0.25 |
0.40 |
| Ash content /%(mass fraction)灰分/%(質(zhì)量分?jǐn)?shù))≤ |
0.10 |
0.20 |
| Moisture content /%(mass fraction) 水分/%(質(zhì)量分?jǐn)?shù))≤ |
0.10 |
0.10 |
| Coefficient thermal expansion(room temperature~600℃)(CTE)/(10~6/℃) 熱膨脹系數(shù)(室溫~600℃)(CTE)/(10~6/℃) ≤ |
0.9~1.1 |
1.1~1.3 |
| Tap density(1mm~2mm)/(g/cm³) 振實密度(1mm~2mm)/(g/cm³) ≥ |
0.90 |
0.86
|