Hot blast furnace high-alumina bricks
|
Index |
RL-65 |
RL-55 |
RL-48 |
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|
Al2O3 % |
≥65 |
≥55 |
≥48 |
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|
Fire resistance Refractoriness, ℃ |
≥1780 |
≥1760 |
≥1740 |
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|
Apparent porosity % |
≤22（24） |
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|
Normal temperature compressive strength CCS, MPa |
≥50 |
≥45 |
≥40 |
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|
Softening onset temperature at 0.2 MPa load RUL，℃ |
≥1500 |
≥1470 |
≥1420 |
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|
Reburning line change rate PLC（%） |
1500℃×2h |
+0.1～-0.4 |
+0.1～-0.4 |
/ |
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|
1450℃×2h |
/ |
+0.1～-0.4 |
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|
TSR ，（1100℃water cooling）next Cycle |
（Furnace top、Wall tile）≥6 |
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|
Note: Values in parentheses denote indicators for lattice bricks in thermal storage chambers. |
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