Description
Corundum mullite brick is a high-performance refractory brick with both corundum phase and mullite phase. It is made of corundum and mullite as the main raw materials and calcined at high temperature.
Corundum mullite bricks can remain stable in a high temperature environment of 1790℃, and also have the advantages of high mechanical strength, good wear resistance, good thermal shock resistance, and stable chemical properties.
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Advantage of Corundum Mullite Brick
Good high-temperature strength
Corundum mullite bricks maintain strong structural strength at high temperatures and are not easy to soften or deform, making them suitable for long-term furnace lining operation.
Excellent thermal shock resistance
The mullite phase provides good thermal shock stability, helping reduce cracking and spalling caused by rapid heating and cooling, and extending lining service life.
Strong wear and corrosion resistance
With the high hardness and chemical stability of corundum, the bricks resist material abrasion, dust erosion, and certain slag corrosion in demanding high-temperature areas.
Specification of Corundum Mullite Brick
| Items | Grades | ||||
| GMZ-88 | GMZ-85 | GMZ-80 | GMZ-75 | ||
| ω(Al2O3) / % | μ0 | ≥88.0 | ≥85.0 | ≥80.0 | ≥75.0 |
| ω(Fe2O3) / % | μ0 | ≤0.8 | ≤1.0 | ≤1.0 | ≤1.2 |
| Open Porosity / % | μ0 | ≤15 | ≤16 | ≤18 | ≤18 |
| Density / (g/cm3) | μ0 | ≥3.00 | ≥2.85 | ≥2.75 | ≥2.60 |
| CCS / MPa | μ0 | ≥120 | ≥100 | ≥100 | ≥100 |
| Xmin | 100 | 80 | 80 | 60 | |
| R.U.L (0.2 MPa , T0.6) / ℃ | μ0 | ≥1700 | ≥1680 | ≥1650 | |
| HPLC (1600℃×3h) / % | Xmin ~ Xmax | -0.1~+0.1 | -0.2~+0.2 | ||
| TSR(1100℃, Cold Water) / cycles | – | ≥10 | ≥10 | —— | |
Product Size: We offer refractory brick sizes that comply with ISO, EN, ASTM, JIS, etc, and customized sizes.
Applications
Corundum mullite bricks are widely used in many industries:
In the metallurgical industry, corundum mullite bricks are used for linings of heating furnaces, soaking furnaces, etc. to withstand high temperatures and slag erosion.
In the ceramic industry, corundum mullite bricks can be used as the vault, kiln wall and other parts of ceramic kilns to ensure the stable operation of the kiln.
In the chemical industry, corundum mullite bricks are suitable for lining high temperature equipment such as cracking furnaces and gasification furnaces. With good performance, it can resist chemical erosion and high temperature, which helps to improve the operating efficiency and life of equipment.
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