Product description of high alumina checker brick
High alumina checker brick for hot blast furnaces is a heat accumulator with high heat exchange capacity, large heat storage area, smooth ventilation and low strength, widely recognized and accepted in the world of iron production.
Features of high alumina checker brick
- Good volumetric stability
- High density and low porosity
- Excellent sliding properties at high temperature
Details of high alumina checker brick
High alumina checker brick is a heat transfer medium, mainly used at the top of the hot blast furnace heat storage chamber to store heat. They play an extremely important role in the process of heating cold air in hot air.
High alumina checker bricks are mainly used in the hot blast furnace heat storage chamber and are arranged neatly by a certain checker brick structure with lattice holes; The upper and lower holes of the high alumina checker bricks are open to gas passage. According to the technical requirements of different temperature areas, the general choice is that of silica lattice bricks, clay bricks and so on; In some hot blast furnaces, you can also choose high alumina bricks, mullite bricks, silica wire bricks and so on.
There are many different sizes of universal arc firebrick, welcome to customize by drawing!
Parameters of high alumina checker brick
| Item | RL-65 | RL-55 | RL-48 |
| Al2O3, %, ≥ | 65 | 55 | 48 |
| Refractoriness, ℃ , ≥ | 1780 | 1760 | 1740 |
| Refractoriness Under Load of 0.2MPa, ℃ , ≥ | 1500 | 1470 | 1420 |
| Linear Change after Reheating, %, 1500℃x2h | 0.1~-0.4 | 0.1~-0.4 | 0.1~-0.4 |
| Apparent Porosity, %, ≤ | 23 | 22 | 22 |
| Cold Crushing Strength, MPa, ≥ | 50 | 45 | 40 |
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