Today is£º
High alumina bricks used for roof of electric furnace for steelmaking£¨Counter 1   Addtime£º2006-7-27 19:19:41£©
Brand
DL-80
DL-75
BDL-B
BSL-A
Item
Al2O3 % 
80
75
65
75
Refractoriness ¡æ 
1790
1790
1790
1790
0.2MPa RUL ¡æ
1550
1530
1580
1630
Liner£¨1550 ¡æ*2h£©%
0~-0.3
0~-0.4
0~-0.4
0~-0.3
Apparent porosity %
19
19
19
18
Cold crushing strength MPa 
78.5
68.5
65
70
Thermal shock£¨1100¡æ£¬water£©
30
25
 
 

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