High Alumina Brick is the core refractory solution for high temperature industry
Release time:
2025-04-09
Author:
Chao yu
Source:
Product Overview
High Alumina Brick (Al₂O₃ content ≥48%) is a kind of advanced refractory material made of high-quality bauxite as the main raw material, which is widely used in the key parts of high temperature kiln in the iron and steel, cement, glass, non-ferrous metal smelting and other industries by virtue of its high refractoriness (≥1770 ℃), excellent resistance to thermal shock and resistance to chemical erosion.
Core Advantages and Technical Characteristics
1. Excellent High Temperature Resistance
Alumina Content Grading:
Grade I High Alumina Brick (Al₂O₃≥75%): Extreme use temperature up to 1790℃, suitable for extreme high temperature environments, such as the roof of electric arc furnaces and ladle linings.
Secondary high alumina bricks (Al₂O₃ 60%-75%): cost-effective, widely used in medium and high temperature areas such as transition zone of rotary kiln and hot blast furnace.
Low impurity design: Fe₂O₃, TiO₂ and other impurities content ≤ 2.5%, reducing the risk of high temperature slag penetration.
2. Erosion resistance and thermal shock stability
High-density structure (bulk density ≥2.6g/cm³) effectively resists acidic/alkaline slag erosion.
Thermal shock stability (1100℃ water cooling cycle ≥15 times) to extend the life of the kiln and reduce the frequency of maintenance.
3. Environmental protection and energy saving
Low thermal conductivity (≤1.5W/m-K) reduces heat loss and helps customers reduce fuel costs.
Chromium-free formula complies with EU REACH regulation, avoiding the risk of heavy metal pollution.
Typical Application Scenarios
| Industries | Application Sections | Solution Value |
| ----------------| ---------------------------| -----------------------------------------|
| Iron & Steel Smelting | Blast Furnace Cylinders, Hot Blast Furnace Vaults | Resistance to resisting the scouring of molten iron and supporting the stable operation of the furnace body for a long period of time. |
| Cement Manufacturing | Rotary Kiln Transition Belt, Kiln Door Hood | Resist clinker alkali erosion and reduce the problem of kiln skin peeling. |
| Glass Manufacturing | Kiln Breast Walls, Heat Storage Chamber Latticework | Resistant to corrosion of high-temperature glass liquids, safeguarding melting efficiency. |
| Nonferrous Metals | Copper Smelting Reflector Furnace, Aluminum Electrolyzer Lining | Resistant to metal melt infiltration, prolonging equipment overhaul cycle. |
Why choose our high alumina bricks?
Customized production: Adjust the Al₂O₃ content (48%-85%) and additives formula according to the customer's working conditions (temperature, atmosphere, erosion medium).
Strict quality control: adopt European tunnel kiln firing technology to ensure uniform sintering of bricks, certified by ISO 9001 and ASTM C27/C155 standards.
Global service network: Provide one-stop service from selection and design, masonry guidance to after-sales tracking, and support multi-region logistics in the Middle East, Southeast Asia and South America.
Market Competitiveness Data
Cost Effectiveness: Compared with imported brands, the price is 15%-20% lower and the delivery cycle is shortened to 30 days.
Successful cases:
Customized 75% high alumina bricks for a large steel plant in Vietnam, helping to increase the life of its electric furnace from 180 to 250 furnace cycles.
Supply low porosity (≤18%) high alumina bricks to a German glass kiln enterprise, reducing energy consumption by 8%.
Related Blog