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48%-75% Al2O3 Basic Model Refractory Bauxite Bricks For Blast Furnace China High Alumina Refractory Brick Manufacturer
High alumina bricks are silicon-aluminum-based refractory materials with an alumina content of ≥ 48%. They possess high refractory temperature (1750 - 1790℃) and strong erosion resistance, and are widely used in high-temperature industrial kilns in industries such as metallurgy, chemical engineering, and building materials.
Description
What's high-alumina-refractory-brick?

high-alumina-refractory-bricktechnical specification
| Parameter | Unit | LZ-48 | LZ-55 | LZ-65 | LZ-75 |
|---|---|---|---|---|---|
| Al₂O₃ Content | % | ≥48 | ≥55 | ≥65 | ≥75 |
| Refractoriness | ℃ | ≥1770 | ≥1790 | ≥1820 | ≥1850 |
| Load Softening Temperature (0.2MPa) | ℃ | ≥1420 | ≥1470 | ≥1520 | ≥1580 |
| Apparent Porosity | % | ≤22 | ≤20 | ≤18 | ≤16 |
| Cold Crushing Strength | MPa | ≥40 | ≥50 | ≥60 | ≥70 |
Features of high-alumina-refractory-brick
1.High-temperature resistance: The refractory degree reaches 1750-1790℃, and the load-softening temperature is above 1420-1550℃. It is superior to clay bricks but slightly lower than silica bricks.
2.Resistance to erosion: Close to neutral refractory materials, it can resist the erosion of acidic slag. The corrosion resistance increases with the increase of alumina content.
3.Physical stability: High density, high compressive strength, low thermal expansion coefficient. It is convenient for cutting during construction and can meet the requirements of standard or special size dimensions.

Where Use the high-alumina-refractory-brick?
2.Chemical and building materials: Catalytic cracking furnaces, glass kilns, cement rotary kilns, and other high-temperature equipment
3.Other scenarios: Hearth-type interlocking bricks in open-hearth furnaces, plug heads of pouring systems, and other special components
Why choose Lite high-alumina-refractory-brick?
Henan Lite is the largest comprehensive industrial base for refractory materials in China. It has been dedicated to refractory materials for 30 years, with customers spanning over 120 countries. The company has four series of product production bases, covering an area of over 50,000 square meters, with an annual production capacity of 150,000 tons, including refractory bricks, non-forming materials, fiber products, and kiln accessories. Its products are widely used in various industries such as steel metallurgy, glass, ceramics, environmental protection, petrochemicals, and cement construction. In 1994, the first clay brick factory of Henan Lite was established in Gongyi, Henan Province. In 2014, Henan Lite Refractory Materials Co., Ltd. was established. In 2015, a non-forming material production base was established in Gongyi, Henan Province. In 2016, a sintering material production base was established in Xinmi, Henan Province. In 2017, a fiber product production base was established in Zibo, Shandong Province. In 2019, it passed the ISO9001 quality management system certification. In 2020, it was recognized as a national high-tech enterprise and a kiln accessory production base was established in Jiujiang, Jiangxi Province. In 2022, it moved to the global headquarters and R&D center of Henan Lite. Serving leading global brand customers, it has established long-term cooperation with TOTO, HWL, SCHAMOTTE, Shaangang, San De, etc., for over 10 years. The quality standards are strict, with CNAS certification, ISO9001, SGS, and CE certifications.



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| Parameter | Unit | LZ-48 | LZ-55 | LZ-65 | LZ-75 |
|---|---|---|---|---|---|
| Al₂O₃ Content | % | ≥48 | ≥55 | ≥65 | ≥75 |
| Refractoriness | ℃ | ≥1770 | ≥1790 | ≥1820 | ≥1850 |
| Load Softening Temperature (0.2MPa) | ℃ | ≥1420 | ≥1470 | ≥1520 | ≥1580 |
| Apparent Porosity | % | ≤22 | ≤20 | ≤18 | ≤16 |
| Cold Crushing Strength | MPa | ≥40 | ≥50 | ≥60 | ≥70 |
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