Home > Products > Refractory Bricks > Alumina Bricks > High Alumina Bricks Refractory Brick for Kiln SK36
High alumina bricks are made by bauxite clinker and binder by crushing,mixing,shaping, drying and high temperature sintering.
The series of alumina bricks feature excellent high temperature mechanics and chemical corrosion resistance to acid and alkali basic solution. Its Al2O3 content various from 48% to 80%,The main components are corundum and mullite phases.
Item |
Index |
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International code name |
SK35 |
SK36 |
SK37 |
SK38 |
SK40 |
Al2O3 min % |
48-55 |
55-65 |
65 |
75 |
80 |
Fe2O3 max % |
2 |
2 |
2 |
2 |
2 |
Refractoriness ℃, min |
1750 |
1770 |
1790 |
1790 |
1790 |
Refractoriness under load (0.2MPa) ℃, min |
1420 |
1470 |
1500 |
1520 |
1530 |
Linear change on reheating (1500℃, 2h) % |
+0.1~ -0.4 *1450℃ |
+0.1~ -0.4 |
+0.1~-0.4 |
+0.1~ -0.4 |
+0.1~ -0.4 |
Apparent porosity max % |
24 |
23 |
23 |
22 |
20 |
Cold crushing strength Mpa, min |
30 |
40 |
50 |
60 |
70 |
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