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High Alumina bricks for general uses are made from bauxite of super quality, bonding chamotte and additives.
Main Properties
Item
Index
Code
DL-48
DL-55
DL-65
DL-70
DL75
Al2O3 min, %
48
55
65
70
75
Refractoriness , min
1790
1793
1760
1770
1780
Refractoriness under load (0.2MPa) , min
1360
1380
1420
1430
1440
Linear change after reheating(1550, 2h) %
0 ~ -0.6
0 ~ -0.55
0 ~ -0.3
0 ~ -0.3
0 ~ -0.3
Apparent porosity max, %
21
19
19
19
18
Cold crushing strength Mpa, min
40
45
50
55
60
