Introduction
Low creep high alumina bricks are a type of high-temperature industrial refractory bricks, mainly used in high-temperature environments such as industrial kilns and glass kilns. This kind of brick has the characteristics of high fire resistance, low creep, good thermal stability and chemical stability. The main component of low creep high alumina bricks is alumina.
Low Creep High Alumina Brick classification
According to different furnace designs, the hole brick has 7 holes, 19 holes, and 37 holes;
Wall bricks are made according to the furnace design;
Bricks for pipes and hot air outlets, supporting customization.
| Item | Unit | LC-155 | LC-150 | LC-145 | LC-140 | LC-135 | LC-130 |
| Al2O3 | % | ≥75 | ≥75 | ≥65 | ≥65 | ≥65 | ≥60 |
| Refractoriness | ℃ | ≥1790 | ≥1790 | ≥1790 | ≥1790 | ≥1770 | ≥1750 |
| Apparent Porosity | % | ≤20 | ≤21 | ≤22 | ≤22 | ≤23 | ≤23 |
| Bulk Density | g/cm3 | ≥2.6 | ≥2.55 | ≥2.5 | ≥2.4 | ≥2.35 | ≥2.3 |
| Cold Crushing Strength | Mpa | ≥60 | ≥60 | ≥55 | ≥50 | ≥45 | ≥45 |
| Creep Rate 0.2MpaX50h | % | 1550℃ | 1500℃ | 1450℃ | 1400℃ | 1350℃ | 1300℃ |
| ≤0.8 | ≤0.8 | ≤0.8 | ≤0.8 | ≤0.8 | ≤0.8 | ||
| Linear change of reburning | % | 1500℃X2h | 1500℃X2h | 1500℃X2h | 1450℃X2h | 1450℃X2h | 1450℃X2h |
| 0.2～-0.2 | 0.2～-0.2 | 0.2～-0.2 | 0.2～-0.2 | 0.2～-0.3 | 0.2～-0.3 |
Low Creep High Alumina Brick Features
- 1. Low creep rate and good high-temperature volume stability.
Under the action of constant temperature and constant load, the deformation of high alumina bricks has a small change over time. Stable volume in high-temperature environments, less prone to hazards such as lining detachment.
- 2. Good resistance to gas erosion and erosion.
In high temperature environments, low creep high aluminum bricks are not only not easy to change in volume, but also have good resistance to gas erosion and long service life.
- 3. High compressive strength and good wear resistance.
Low creep high aluminum bricks can withstand high gas pressure and resist the impact of dust in the gas.
Low Creep High Alumina Brick Application
Low creep high alumina bricks are used in the combustion chamber, upper part of the regenerative chamber, pipelines, and other parts of blast furnace hot blast furnaces, mainly used in long-term high-temperature environments.
