High-aluminum bricks for top of electric furnace
Index |
Fired high-aluminum bricks for top of electric furnace |
Non-fired high-aluminum bricks for top of electric furnace |
||||
YDL-80 |
DL-80 |
DL-75 |
BDL-80 |
BDL-75 |
||
Al2O3, % |
≥80 |
≥80 |
≥75 |
≥80 |
≥75 |
|
Fire resistance Refractoriness,℃, |
≥1790 |
/ |
/ |
≥1780 |
≥1780 |
|
Apparent porosity % |
Top brick |
20 |
19 |
19 |
18 |
18 |
Bevel brick |
22 |
21 |
21 |
20 |
20 |
|
Normal temperature compressive strength CCS,Mpa |
≥75 |
≥75 |
≥65 |
≥60 |
≥55 |
|
Softening onset temperature at 0.2 MPa load RUL, ℃ |
≥1550 |
≥1530 |
≥1520 |
≥1530 |
≥1520 |
|
Reburning line change rate PLC(1500℃×2h),% |
0.2~-0.3 |
0.2~-0.4 |
0.2~-0.4 |
/ |
/ |
|
Thermal shock stability (1100℃Water cooling),nex cycle,≥ |
≥10 |
/ |
/ |
≥8 |
≥8 |
Relevant case
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