Low creep bricks for hot blast furnaces
Index |
DRL-155 |
DRL-150 |
DRL-145 |
DRL-140 |
DRL-135 |
DRL-130 |
DRL-127 |
DRL-125 |
DRN-120 |
DRN-115 |
Al2O3 % |
≥75 |
≥75 |
≥65 |
≥65 |
≥65 |
≥60 |
≥50 |
≥42 |
≥40 |
≥40 |
Fe2O3 % |
≤1.5 |
≤1.5 |
≤1.5 |
≤1.5 |
≤2.0 |
≤2.0 |
≤2.0 |
≤2.0 |
≤2.5 |
≤2.5 |
Bulk densityBD ,g/cm3 |
≥2.65 |
≥2.65 |
≥2.50 |
≥2.40 |
≥2.35 |
≥2.30 |
≥2.30 |
≥2.25 |
≥2.20 |
≥2.15 |
Apparent porosity % |
≤20 |
≤21 |
≤21 |
≤22 |
≤22 |
≤22 |
≤23 |
≤23 |
≤24 |
≤24 |
Normal temperature compressive strength CCS,MPa |
≥60 |
≥60 |
≥60 |
≥55 |
≥55 |
≥55 |
≥50 |
≥40 |
≥40 |
≥35 |
Reburning line change rate PLC(%) |
1550℃×2h |
1550℃×2h |
1550℃×2h |
1450℃×2h |
1450℃×2h |
1450℃×2h |
1450℃×2h |
1400℃×2h |
1350℃×2h |
1300℃×2h |
Creep rate(0.2MPa),% |
1550℃×50h≤0.8 |
1500℃×50h≤0.8 |
1450℃×50h≤0.8 |
1400℃×50h≤0.8 |
1350℃×50h≤0.8 |
1300℃×50h≤0.8 |
1270℃×50h≤0.8 |
1250℃×50h≤0.8 |
1200℃×50h≤0.8 |
1150℃×50h≤0.8 |
Relevant case
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