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Fireclay bricks are mainly made from chamotte, being high pressure pressed and sintered in high temperature. Main minerals compositions are mullite phases. These products are widely used in all parts of furnace lining for middle and small capacity blast furnaces because of their excellent physical and chemical properties in high temperature. It also can be used in lining for other kinds of furnace.
Technical data:
|
Item |
Index
|
||
|
SK-30 |
SK-32 |
SK-34 |
|
|
Al2O3 % min |
35 |
38 |
42 |
|
Fe2O3 % max |
3 |
3 |
2.8 |
|
Refractoriness ℃min |
1630 |
1660 |
1700 |
|
Linear change on reheating % (1400℃, 2h) |
+0.1~ -0.4 |
||
|
Apparent porosity % max |
24 |
||
|
Cold crushing strength Mpa min |
25 |
30 |
35 |
|
Bulk Density, g/cm3 min |
2.0 |
2.1 |
2.15 |
