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High-Quality Magnesite Chrome Bricks from China Suppliers | Durable Refractory Solutions for Metallurgical 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
Q
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 suitable for the most demanding high-heat industrial processes including cement kilns and steelmaking furnaces.
Q
What is the difference between Magnesia-Chrome Bricks and Magnesia-Zirconia Bricks?
Magnesia-Chrome Bricks contain Cr₂O₃ (8–20%) and are optimized for high refractoriness under load and thermal shock stability, ideal for cement and metallurgical applications. Magnesia-Zirconia Bricks incorporate ZrO₂ (13%) for superior cold crushing strength (up to 100 MPa) and are preferred in glass industry applications requiring enhanced corrosion resistance.
Q
Which industries are Magnesia-Chrome and Magnesia-Zirconia Bricks most commonly used in?
These refractory bricks are widely used across the cement industry (rotary kilns), metallurgical industry (steelmaking converters, ladles, electric furnace linings), glass industry (melting furnace regenerators), and other high-temperature equipment such as waste incinerators and chemical reactors.
Q
How do these bricks perform against chemical corrosion from molten slag and metal liquids?
Both product types offer strong corrosion resistance, effectively withstanding erosion from molten slag, metal liquids, and aggressive chemical media encountered in metallurgical and cement production environments. This significantly reduces material wear and extends the overall service cycle of industrial equipment.
Q
What is the thermal shock stability of these refractory bricks?
Magnesia-Chrome Bricks (DMC series) achieve a thermal shock stability of 20 cycles at 950°C water cooling, while Magnesia-Zirconia Bricks (MZr series) achieve 15 cycles. This ensures reliable performance under rapid temperature fluctuations common in industrial kilns and furnaces.
Q
How can I get a customized quote for Magnesia-Chrome or Magnesia-Zirconia Bricks?
You can submit your inquiry directly through our contact form above, specifying your required product grade, quantity, and application details. Our team will respond promptly with a tailored quotation to meet your specific industrial requirements.