|
Brand
Item
|
High-Alumina Brick
|
||||||
|
LZ-85
|
LZ-80
|
LZ-75
|
LZ-65
|
LZ-55
|
LZ-48
|
||
|
Al2O3 %
|
≥85
|
≥80
|
≥75
|
≥65
|
≥55
|
≥48
|
|
|
Refractoriness under Load ℃
|
≥1550
|
≥1530
|
≥1520
|
≥1500
|
≥1470
|
≥1450
|
|
|
Reheat linear change %
|
1500℃×2h
|
+0.1～-0.4
|
+0.1～-0.4
|
+0.1～-0.4
|
+0.1～-0.4
|
|
|
|
Apparent porosity %
|
≤23
|
≤22
|
≤23
|
≤23
|
≤22
|
≤22
|
|
|
Cold crushing strength Mpa
|
≥55
|
≥55
|
≥50
|
≥45
|
≥40
|
≥35
|
|
