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low cement refactory castable | DN | DGL-1 | DGL-2 | DG | ||
chemical composition(%) | AL2o3 | 45 | 70 | 75 | 90 | |
CaO | 1.5~2 | 1.5 | 1.5 | 1.2 | ||
Bulk density(g/cm3) | 110℃×24h | 2.4 | 2.65 | 2.7 | 3.15 | |
1350℃×3h(1500℃×3h) | 2.35 | 2.6 | 2.65 | ( 3.1) | ||
Flexural strength(Mpa) | 110℃×24h | 5 | 6 | 6 | 8 | |
1350℃×3h(1500℃×3h) | 10 | 10 | 11 | (13) | ||
Compressive strength(Mpa) | 110℃×24h | 30 | 30 | 35 | 45 | |
1350℃×3h(1500℃×3h) | 60 | 60 | 65 | (80) | ||
Linear change rate(%) 1350℃×3h(1500℃×3h) | ±5 | ±5 | ±5 | (±5) | ||
Refractoriness(℃) | 1710 | 1790 | >1790 | >1790 | ||
Common temperature (℃) | 1450 | 1550 | 1550 | 1650 | ||
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