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Magnesia Carbon Brick - High-Temp Resistant For Steel Converter & Ladle Lining
Our Magnesia Carbon Brick is a premium refractory solution crafted from high-purity magnesia (MgO ≥72%) and graphite, designed for extreme high-temperature industrial environments (up to 2000℃). It combines magnesia’s slag resistance with carbon’s thermal shock stability, ideal for converter linings, ladle slag lines, and EAF hot spots. With low porosity (≤4%) and high cold crushing strength (≥35MPa), it extends equipment service life by 50%+ compared to traditional refractories. Certified by ISO & CE, trusted by steel mills worldwide.
Description
1. Core Specifications
| Parameter | MT10A | MT12A | MT14A | MT16A | MT18A | Advantage |
|---|---|---|---|---|---|---|
| MgO Content | ≥80% | ≥78% | ≥76% | ≥74% | ≥72% | Enhances slag & corrosion resistance |
| Carbon Content | ≥10% | ≥12% | ≥14% | ≥16% | ≥18% | Improves thermal shock stability |
| Apparent Porosity | ≤4% | ≤4% | ≤3.5% | ≤3.5% | ≤3.0% | Reduces slag penetration |
| Bulk Density | ≥3.02 g/cm³ | ≥2.97 g/cm³ | ≥2.95 g/cm³ | ≥2.92 g/cm³ | ≥2.89 g/cm³ | Ensures structural strength |
| Cold Crushing Strength | ≥40 MPa | ≥40 MPa | ≥38 MPa | ≥35 MPa | ≥35 MPa | Withstands mechanical impact |
| High-Temp Flexural Strength(1400℃×0.5h) | ≥6 MPa | ≥6 MPa | ≥10 MPa | ≥8 MPa | ≥10 MPa | Stable performance under extreme heat |
| Max Service Temp | Up to 2000℃ for all grades | Meets converter/ladle high-temp needs |
2. Key Advantages
Extreme High-Temp Resistance: Withstands 1200℃+ long-term use and up to 2000℃ peak temp, maintaining stability during furnace start-up/shutdown cycles.
Superior Slag Erosion Resistance: Reacts with molten metal slag to form a protective layer, cutting erosion rate by 20-30% compared to ordinary refractories-ideal for ladle slag lines and converter linings.
Excellent Thermal Shock Stability: Low thermal expansion rate prevents cracking from rapid temp changes (e.g., 1600℃ steel tapping to room temp).
Long Service Life: Used in Baosteel's 300t ladle slag lines, it achieves over 100 service cycles-doubling the life of magnesium-chromium bricks.
Eco-Friendly & Cost-Saving: Unburned production process has zero waste emissions; its durability reduces replacement frequency, cutting maintenance costs by 40%+ annually.
3. Application Scenarios
| Industry | Target Equipment | Recommended Grade | Usage Value |
|---|---|---|---|
| Steel Metallurgy | Converter (mouth, cap, belly) | MT14A/MT16A | Resists slag spray and thermal shock; used in 100t+ converters globally |
| Ladle Slag Line | MT16A/MT18A | Extends service cycles from 20-25 to 40+ times | |
| EAF (hot spots, furnace walls) | MT12A/MT14A | Withstands electric arc heat and scrap impact | |
| Chemical Industry | Refinery/Fertilizer High-Temp Vessels | MT10A/MT12A | Resists corrosive gases (CO, H₂) and chemical erosion |
| Machinery Manufacturing | Semiconductor Furnaces, Electrodes | MT14A/MT16A | Conductive performance fits electrode/heating equipment needs |
4. Why Choose Us
30+ Years of Expertise: Specialized in refractory materials since 2010, serving 800+ steel mills in 40+ countries (USA, Germany, Brazil).
Large-Scale Production: 80,000 tons annual output ensures 10-15 days lead time for bulk orders (5000pcs+).
Global Certification: ISO 9001, CE, and SGS certified-compliant with EU/US industrial standards.
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