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China Suppliers Factory Magnesite Chrome Brick for High-Temperature Applications in Metallurgy and Cement Kilns
Core Advantages
Superior Heat Resistance
Maintains structural integrity at temperatures up to 1800°C, resisting thermal shock and deformation even under rapid temperature fluctuations, suitable for high-heat industrial processes.
Strong Corrosion Resistance
Effectively resists erosion from molten slag, metal liquid, and chemical media in metallurgical and cement production, reducing material wear and extending service cycle.
High Mechanical Strength
Dense structure ensures excellent compression and impact resistance, preventing cracking and peeling during long-term operation, lowering replacement frequency.
Cost-Effective Performance
Balances high durability and reasonable cost, reducing overall production costs by minimizing downtime for maintenance and replacement.
Product Parameters
| Item | Magnesia-Chrome Bricks | Magnesia-Zirconia Bricks | ||||
| DMC-20 | DMC-16 | DMC-12 | DMC-8 | MZr-75 | MZr-78 | |
| MgO % | 55 | 60 | 65 | 70 | 75 | 78 |
| SiO₂ % | 1.5 | 1.5 | 2.8 | 3.0 | 10.0 | 8.0 |
| CaO % | / | / | / | / | 2.0 | 1.5 |
| ZrO₂ % | / | / | / | / | 13.0 | 13.0 |
| Cr₂O₃ % | 20 | 16 | 12 | 8 | 2.0 | 3.0 |
| Bulk Density (g/cm³) | 3.15 | 3.05 | 3.02 | 2.95 | 3.10 | 3.18 |
| Apparent Porosity (%) | 16 | 16 | 18 | 18 | 15 | 14 |
| Cold Crushing Strength (MPa) | 40 | 40 | 40 | 40 | 80 | 100 |
| Refractoriness Under Load ℃ (0.2MPa, 0.6%) | 1700 | 1700 | 1650 | 1620 | 1600 | 1670 |
| Thermal Shock Stability (950℃ cooling) times | 20 | 20 | 20 | 20 | 15 | 15 |
Detailed Application Scenarios
1
Cement Industry
◎ Widely used in the burning zone, transition zone, and tertiary air duct of rotary cement kilns. Resists erosion from alkali metals and clinker, ensuring stable kiln operation and improving cement production efficiency.
2
Metallurgical Industry
◎ Applied in steelmaking converters, electric furnace linings, ladles, and tundishes. Withstands molten steel and slag erosion, suitable for primary and secondary steelmaking processes. Also used in non-ferrous metallurgy (copper, aluminum smelting) for furnace linings.
3
Glass Industry
◎ Used in glass melting furnace regenerators and throat parts. Resists high temperature and corrosion from glass liquid, maintaining furnace tightness and extending furnace service life.
4
Other High-Temperature Equipment
◎ Suitable for waste incinerators, chemical reactors, and thermal power plant boilers that operate under extreme heat and corrosive conditions, providing reliable refractory protection.
Conclusion
Contact us now for a quote and experience the difference of working with the best in the business.
Frequently Asked Questions
What is the maximum operating temperature for Magnesia-Chrome Bricks?
Magnesia-Chrome Bricks can maintain structural integrity at temperatures up to 1800°C, making them ideal for high-heat industrial processes such as cement kilns, steelmaking converters, and glass melting furnaces.
What is the difference between Magnesia-Chrome Bricks and Magnesia-Zirconia Bricks?
Magnesia-Chrome Bricks (DMC series) contain Cr₂O₃ as a key component and are optimized for high-temperature corrosion resistance in metallurgical and cement applications. Magnesia-Zirconia Bricks (MZr series) incorporate ZrO₂ for enhanced cold crushing strength (up to 100 MPa) and lower apparent porosity, making them suitable for applications requiring superior mechanical performance.
Which industries are these refractory bricks most suitable for?
These bricks are widely used across the cement industry (rotary kiln burning zones), metallurgical industry (steelmaking converters, electric furnace linings, ladles), glass industry (melting furnace regenerators), as well as waste incinerators, chemical reactors, and thermal power plant boilers.
How do these bricks perform under thermal shock conditions?
Both Magnesia-Chrome and Magnesia-Zirconia Bricks demonstrate strong thermal shock stability. The DMC series achieves up to 20 thermal shock cycles at 950°C water cooling, while the MZr series achieves 15 cycles — ensuring reliable performance under rapid temperature fluctuations.
Can custom sizes or specifications be produced?
Yes. We offer customized production to meet specific project requirements, including custom dimensions, chemical compositions, and performance parameters. Please contact us with your technical specifications to receive a tailored solution and accurate quote.
How do these refractory bricks help reduce production costs?
Thanks to their high durability, superior corrosion resistance, and excellent mechanical strength, these bricks significantly extend service life, minimize unplanned downtime for maintenance, and reduce replacement frequency — resulting in lower overall operational costs for industrial facilities.