Insulating Bricks High Performance Al2O3 75% High Alumina Anchor Brick for Cement Kiln
Introduction of high alumina brick:
High-alumina brick belongs to silicon-aluminum series products, is a block of refractory ceramic material used in lining furnaces, kilns, fireboxes, and fireplaces.
Feature:
High temperature stability
High refractoriness
Small coefficient of the thermal expansion
Strong chemical corrosion resistance
Excellent thermal shock resistance
Technical Index:
| Item |
SK32 SK34 SK36 SK38 High Refractoriness Alumina Refractory Brick |
| DRL-155 |
DRL-150 |
DRL-145 |
DRL-140 |
DRL-135 |
DRL-130 |
DRL-127 |
| Al2O3,% ≥ |
75 |
75 |
65 |
65 |
65 |
60 |
50 |
| Apparent Porosity,% ≤ |
20 |
21 |
21 |
22 |
22 |
22 |
23 |
| Bulk Density, g/cm3 |
2.65-2.85 |
2.65-2.85 |
2.50-2.70 |
2.40-2.60 |
2.35-2.30 |
2.30-2.50 |
2.30-2.50 |
| Compress Strength, Mpa ≥ |
60 |
60 |
60 |
55 |
55 |
55 |
50 |
Creep Rate, %
(0.2Mpa,50h) ≤ |
1550℃
0.8 |
1500℃
0.8 |
1450℃
0.8 |
1400℃
0.8 |
1350℃
0.8 |
1300℃
0.8 |
1270℃
0.8 |
| Permanent Linear Change % |
1550℃,2h |
0.1-0.2 |
0.1-0.2 |
0.1-0.2 |
-- |
-- |
-- |
-- |
| 1450℃,2h |
-- |
-- |
-- |
0.1-0.2 |
0.1-0.4 |
0.1-0.4 |
0.1-0.4
|
High Alumina Bricks: (GBT2988-2012)
| Item |
Index |
| Limits of tolerance for principle dimensions |
High alumina bricks for hot blast stove |
Other Bricks |
Checker Brick |
| length |
Bottom bricks |
±2 |
Size≤150 |
±2 |
Length ( Width) |
-1
-3
|
| others |
±1.5% |
151-345 |
±3 |
| width |
±2 |
|
Height(thickness) |
±3 |
| Thickness |
±2 |
＞345 |
±4 |
Distance of the checker in the same face |
±1 |
| Bottom bricks |
≤ |
1.0 |
Width≤345 |
≤ |
1.0 |
- |
| others |
1.5 |
Width＞345 |
1.5 |
