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Low creep bricks for hot blast furnaces

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Low creep bricks for hot blast furnaces

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Series for Hot Blast Furnaces

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Index Item	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 0.1～0.2	1550℃×2h 0.1～0.2	1550℃×2h 0.1～0.2	1450℃×2h 0.1～0.2	1450℃×2h 0.1～0.4	1450℃×2h 0.1～0.4	1450℃×2h 0.1～0.4	1400℃×2h ± 0.2	1350℃×2h ± 0.2	1300℃×2h ± 0.2
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

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Low creep bricks for hot blast furnaces

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