Description of Checker Brick
Checker brick is a kind of refractory brick that can withstand 1740-1780℃. It can be used in hot blast stoves, glass kilns, and regenerators of coke ovens. Compared with other refractory bricks, it has a strong heat exchange capacity, large heat storage area, reduced energy consumption, volume stability, and other features.
Technique Data of Kerui Checker Brick
| 项目/等级 | RL-65 | RL-55 | RL-48 |
|---|---|---|---|
| ω (Al2O3)/% | 65 | 55 | 48 |
| Refractoriness/ ≥ ℃ | 1780 | 1760 | 1740 |
| 表观孔隙率/% | 23 | 22 | 22 |
| 冷压强度/兆帕 | 50 | 45 | 40 |
| 0.2MPa Refractoriness Under Load/℃ | 1500 | 1470 | 1420 |
| Permanent Linear Change/% | 1500℃*2h | 1500℃*2h | 1500℃*2h |
| 0.1~-0.4 | 0.1~-0.4 | 0.1~-0.4 |
Application of Checker Brick
Chequer bricks are usually used in hot blast stoves, glass kilns, regenerators of coke ovens, electric arc furnaces, induction furnaces, AOD furnaces, VOD furnaces, thermal technology equipment, etc.
It is worth to noting that it usually uses clay checker brisks in hot blast stoves, when the hot air is less than 900℃. When the hot air is more than 900℃, it usually uses high-alumina checker brick, mullite checker brick, silica checker brick, and sillimanite refractory bricks.
Advantages of Checker Brick
1.Strong Heat Exchange Capacity
This kind of refractory bricks China has a strong heat exchange capacity. This means that it has good thermal conductivity. When it is used for the regenerator of coke ovens, it contributes to rapidly making cold air turn into hot air.
2.Large Heat Storage Area
Chequer bricks have a lot of holes. These holes increase the contact area between bricks and hot air. So they can rapidly store the heat and transfer the heat. In a regenerative chamber, chequer brick has a small resistance force that can smooth ventilation.
3.Good Creep Resistance
Good creep resistance contributes to keeping a stable volume of high-temperature equipment in high-temperature situations. Besides, these bricks usually are hexagons. It can greatly increase the stability of checker bricks.
