1, Fireclay bricks characters:
The main chemical components: Al2O3 content is 30%-48%, SiO2 content is 50%-65%, and a small number of alkali metals, alkaline earth metal oxides, etc. Mineral composition is usually mullite, quartz and glass phase. Its refractoriness is 1580-1750
℃, refractoriness under load is 1250-1450 ℃, line expansion coefficients is low, with good thermal shock resistance and strong ability to resist erosion acid slag.
2. Appllicaions.
Widely used for lining of acid kiln, also used for blast furnace, hot blast furnace, glass kiln and high temperature kiln such as carbon baking kiln.
3. Physical and Chemical Index.
Index |
Item |
N-1 |
N-2a |
N-2b |
N-3a |
N-3b |
N-4 |
N-5 |
N-6 |
Refractoriness, CN |
176 |
174 |
174 |
172 |
172 |
170 |
166 |
158 |
Refractoriness under load ,℃ 2kg/cm2≥ |
1400 |
1350 |
|
1320 |
|
1300 |
|
|
Reheating linear change% |
1400℃,2h |
＋0.1
－0.4 |
＋0.1
－0.5 |
＋0.2
－0.5 |
|
|
|
|
|
1350℃,2h |
|
|
|
＋0.2
－0.5 |
＋0.2
－0.5 |
＋0.2
－0.5 |
＋0.2
－0.5 |
|
Apparent porosity,%≤ |
22 |
24 |
26 |
24 |
26 |
24 |
26 |
28 |
Compress strength,N/mm2≥ |
30 |
25 |
20 |
20 |
15 |
20 |
15 |
15 |
Thermal shock
resistance |
N-2b, N-3b must be tested and list the actual measuring data in the quality Certification. |
Fireclay brick packing
Fireclay bricks are packed on wooden pallet and then polyethylene film is placed over it, finally the package is tied up with steel strips.
Fireclay brick order quantity
Minimum order is 20 t
Fireclay brick delivery time
Fireclay brick can be delivered within 30 days after signing contract. |