High alumina brick for blast furnace are sued in the part of throat, stack, hearth and its temperature of refractoriness under load is normally above 1420~1550℃ that is higher than the clay brick .
High alumina brick for blast furnace are of very good ability of anti-acidity, anti-metal fluid corrode and anti-oxidation.
Index |
Item |
GL-65 |
GL-55 |
GL-48 |
Al2O3 ,%≥ |
65 |
55 |
48 |
Fe2O3 ,%≤ |
2.0 |
Refractoriness ，℃ |
1790 |
1770 |
1750 |
0.2Mpa refractoriness under load ,℃≥ |
1500 |
1480 |
1450 |
Linear change
After reheating % |
1500℃,2h |
0
-0.2 |
- |
1450℃,2h |
- |
0
-0.2 |
Apparent porosity, %≤ |
19 |
18 |
Compress strength, Mpa≥ |
58.8 |
49.0 |
Ventilative |
It must be tested and list the actual measuring data in the quality Certification. |
High alumina brick packing
Bricks are packed on wooden pallet and then polyethylene film is placed over it, finally the package is tied up with steel strips.
High alumina brick order quantity
20 t as minimum quantity is accepted.
High alumina brick delivery time
The production capacity reach to 3000 t per month and delivery time begins 35 days after receiving 30% of earnest money or L/C at sigh. |