1. Main Characters: According to the applications, high alumina bricks for hot blast furnace are divided into ordinary high alumina brick and low creep high alumina bricks. They have large thermal capacity, low creep, high temperature under load and anti-heat shock.
2.
Applications: High alumina bricks are used as liner bricks or checker bricks when temperature of hot air is between 900℃-1200℃.
3.
Physical and Chemical Index
Index |
Item |
RL-65 |
RL-55 |
RL-48 |
Al2O3 ,%≥ |
65 |
55 |
48 |
Refractoriness ℃≥ |
1780 |
1760 |
1740 |
0.2Mpa refractoriness under load ,℃≥ |
1500 |
1470 |
1420 |
Linear change
After reheating % |
1500℃,2h |
0.1－-0.4 |
- |
1450℃,2h |
- |
0.1－-0.4 |
Apparent porosity, %≤ |
22(24) |
Compress strength, Mpa≥ |
50 |
45 |
40 |
Thermal shock resistance(1100℃-Cold),%≥ |
(Roof, wall bricks) 6 |
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
The minimum quantity of order is 20 MT
High alumina brick delivery time
2000 MT per month can be delivered after the contract being affective.
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