High-Performance Chrome Corundum Refractory Bricks - Industrial Grade Al₂O₃-Cr₂O₃ Composite
Professional chrome corundum refractory bricks with superior corrosion resistance, thermal shock stability, and high-temperature performance. ISO certified manufacturer specialising in Al2O3-Cr2O3 composite bricks for steel, glass, and petrochemical industries.
Key words:
Chrome corundum bricks
refractory bricks
Al2O3-Cr2O3
high temperature bricks
industrial furnace lining
corrosion resistant bricks
chromium oxide bricks
Classification:
Product Introduction
High-Performance Chrome Corundum Refractory Bricks
Industrial Grade Al2O3-Cr2O3 Composite Technology for Superior High-Temperature Performance and Corrosion Resistance
Technical Specifications
| Chemical/Physical Property | Value | Unit |
|---|---|---|
| Al2O3 Content | ≥75 | % |
| Fe2O3 Content | ≤1.5 | % |
| Cr2O3 Content | ≥12 | % |
| Cold Crushing Strength (CSS) | ≥90 | MPa |
| Refractoriness Under Load (0.2MPa RUL) | ≥1620 | °C |
| Reheating Linear Change (1500°C×2h) | ±0.1 | % |
| Bulk Density (BD) | ≥3.1 | g/cm³ |
| Apparent Porosity (AP) | ≤18 | % |
Key Performance Benefits
- Exceptional Corrosion Resistance: Superior resistance to molten glass and slag corrosion due to optimised Cr2O3 content
- High-Temperature Stability: Maintains structural integrity at temperatures exceeding 1620°C
- Enhanced Thermal Shock Resistance: Low thermal expansion coefficient prevents cracking during rapid temperature changes
- Improved Mechanical Strength: High cold crushing strength of ≥90 MPa ensures durability under mechanical stress
- Chemical Inertness: Resistant to H2 and CO gases in reducing atmospheres
- Extended Service Life: Al2O3-Cr2O3 solid solution provides enhanced durability
Industrial Applications
Steel Industry
High-blast furnace linings, ladle bottoms, furnace throats, and AOD furnace air eye areas
Glass Industry
Glass kiln linings, melting furnace walls, regenerator checkers, and glass flow hole covers
Non-Ferrous Metallurgy
Copper converters, zinc smelting furnaces, volatilising kilns, and anode furnace applications
Petrochemical Industry
Reformer linings, ethylene cracking furnaces, thermal reactors, and gasification furnaces
Waste Incineration
High-temperature waste incinerator linings and thermal treatment facility components
Cement Industry
Rotary kiln linings and high-temperature zone applications in cement production
Advanced Manufacturing Process
Raw Material Selection
Our chrome corundum bricks are manufactured using premium-grade industrial alumina and high-purity chromium oxide, carefully selected to meet international quality standards including ASTM and ISO specifications.
Production Technology
The manufacturing process involves forming an α-Al2O3-Cr2O3 solid solution through controlled high-temperature sintering at 2200°C in advanced shuttle kilns, ensuring optimal crystal structure formation and superior mechanical properties.
Quality Control
Each batch undergoes comprehensive testing including chemical analysis, physical property evaluation, and thermal performance assessment in our ISO 9001:2015 certified testing laboratory to guarantee consistent quality and performance.
Frequently Asked Questions
What makes chrome corundum bricks superior to standard corundum bricks?
Chrome corundum bricks form a continuous Al2O3-Cr2O3 solid solution that provides enhanced corrosion resistance, improved thermal shock stability, and superior performance at high temperatures compared to pure corundum materials. The chromium oxide content increases slag viscosity, reducing penetration rates and extending service life.
What is the maximum operating temperature for these bricks?
Our chrome corundum bricks can withstand continuous operation at temperatures up to 1700°C, with a refractoriness under load (RUL) of ≥1620°C at 0.2MPa pressure, making them suitable for the most demanding high-temperature industrial applications.
Are chrome corundum bricks environmentally safe?
Yes, our chrome corundum bricks are manufactured to strict environmental standards. The chromium oxide is chemically bound in the crystal structure and does not leach under normal operating conditions. The bricks are also recyclable and reusable, supporting circular economy principles.
What quality certifications do your chrome corundum bricks meet?
Our products are manufactured under ISO 9001:2015 quality management system and comply with international standards including ASTM C401, JIS R2222, and GB/T 2988. All products undergo rigorous testing for chemical composition, physical properties, and thermal performance.
Can you provide custom sizes and shapes for specific applications?
Absolutely. We specialise in custom manufacturing and can produce chrome corundum bricks in various shapes, sizes, and configurations based on your technical drawings and application requirements. Our engineering team provides consultation for optimal design solutions.
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For more product information or technical support, please contact us
Contact Information
Contact:+86-19171489999
Address: Yangzhai Town Metallurgical Industrial Park, Guangshui City, Hubei Province
Copyright©Hubei Zhongnai New Material Technology Co., Ltd.
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