High Alumina Bricks for Eaf Roofs
DL-80、DL-75、BDL-80、BDL-75
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HIGH ALUMINA BRICKS FOR EAF ROOFS |
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Goods Brand |
DL-80 |
DL-75 |
BDL-80 |
BDL-75 |
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Al2O3(%) min |
80 |
75 |
80 |
75 |
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Refractriness under load 0.2 Mpa (℃) min |
1530 |
1520 |
1530 |
1520 |
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Apparent porosity (%) max |
19(21) |
19(21) |
18(20) |
18(20) |
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Cold Crushing strength (MPa)min |
75 |
65 |
60 |
55 |
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Shrinkage after reheating 1500℃x2h (%) max |
*** |
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Thermal shock (1100℃water) |
*** |
*** |
8 |
8 |
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