Description
Magnesia carbon brick(MgO-C brick) is a kind of non-burning carbon composite refractory material made from high-melting-point basic oxide magnesia and high-melting-point graphite, which is resistant to slag penetration，adding various non-oxide additives and combining with carbonaceous binder. As a composite refractory material, magnesia carbon bricks effectively combine the strong slag resistance of magnesia with the high thermal conductivity and low thermal expansion of carbon, thereby compensating for poor spalling resistance of magnesia. Their main features include excellent high-temperature performance, strong slag resistance, good thermal shock resistance, and low high-temperature creep.
Advantages
- High strength.
- Good slag resistance.
- Good thermal shock stability.
- High refractoriness.
Specifications
Below are the technical specifications for MgO-C Bricks, categorized by Carbon (C) and Magnesium Oxide (MgO) content.
| Grade | Item | ||||||
| Open Porosity / % ≤ | Bulk density / (g·cm³) ≥ | CCS / MPa | High-temp Modulus of Rupture (1400℃×0.5 h) / MPa ≥ | ω(MgO)/ % ≥ | ω(C)/ % ≥ | ||
| MT-5A | 5.0 | 3.10 | 50.0 | — | 85.0 | 5.0 | |
| MT-5B | 6.0 | 3.02 | 50.0 | — | 84.0 | 5.0 | |
| MT-5C | 7.0 | 2.92 | 45.0 | — | 82.0 | 5.0 | |
| MT-5D | 8.0 | 2.90 | 40.0 | — | 80.0 | 5.0 | |
| MT-8A | 4.5 | 3.05 | 45.0 | — | 82.0 | 8.0 | |
| MT-8B | 5.0 | 3.00 | 45.0 | — | 81.0 | 8.0 | |
| MT-8C | 6.0 | 2.90 | 40.0 | — | 79.0 | 8.0 | |
| MT-8D | 7.0 | 2.87 | 35.0 | — | 77.0 | 8.0 | |
| MT-10A | 4.0 | 3.02 | 40.0 | 6.0 | 1.0 | 80.0 | 10.0 |
| MT-10B | 4.5 | 2.97 | 40.0 | — | 79.0 | 10.0 | |
| MT-10C | 5.0 | 2.92 | 35.0 | — | 77.0 | 10.0 | |
| MT-10D | 6.0 | 2.87 | 35.0 | — | 75.0 | 10.0 | |
| MT-12A | 4.0 | 2.97 | 40.0 | 6.0 | 1.0 | 78.0 | 12.0 |
| MT-12B | 4.0 | 2.94 | 35.0 | — | 77.0 | 12.0 | |
| MT-12C | 4.5 | 2.92 | 35.0 | — | 75.0 | 12.0 | |
| MT-12D | 5.5 | 2.85 | 30.0 | — | 73.0 | 12.0 | |
| MT-14A | 3.5 | 2.95 | 38.0 | 10.0 | 1.0 | 76.0 | 14.0 |
| MT-14B | 3.5 | 2.90 | 35.0 | — | 74.0 | 14.0 | |
| MT-14C | 4.0 | 2.87 | 35.0 | — | 72.0 | 14.0 | |
| MT-14D | 5.0 | 2.81 | 30.0 | — | 68.0 | 14.0 | |
| MT-16A | 3.5 | 2.92 | 35.0 | 8.0 | 1.0 | 74.0 | 16.0 |
| MT-16B | 3.5 | 2.87 | 35.0 | — | 72.0 | 16.0 | |
| MT-16C | 4.0 | 2.82 | 30.0 | — | 70.0 | 16.0 | |
| MT-18A | 3.0 | 2.89 | 35.0 | 10.0 | 1.0 | 72.0 | 18.0 |
| MT-18B | 3.5 | 2.84 | 30.0 | — | 70.0 | 18.0 | |
| MT-18C | 4.0 | 2.79 | 30.0 | — | 69.0 | 18.0 | |
Product Size: We offer refractory brick sizes that comply with ISO, EN, ASTM, JIS, etc, and customized sizes.
Applications of Magnesia Carbon brick
Magnesia carbon bricks are essential refractory materials widely used in metallurgical applications including converters, AC/DC electric arc furnaces, ladles, hot metal ladles, and torpedo cars.
These high-performance bricks excel in critical working zones such as ladle slag lines, molten pools, and ladle bottoms, delivering superior service life compared to conventional refractory materials. Notably, magnesia carbon bricks achieve exceptional durability in slag line applications, significantly outperforming alternative refractories.
Our services: refractory technicians, refractory installation drawings, refractory bricks and castables, refractory masonry services, refractory mixes and precast cell, special shaped bricks, insulation materials, installation supervision, accident investigation and resolution, other customized services.
