Magnesia carbon refractory brick is an excellent composite basic refractory brick. It gives full play to the advantages of basic refractory materials (MgO) and graphite refractory materials (C). When using magnesia carbon brick as the kiln lining, it is difficult to be corroded by slag, especially in the application of the steel industry and metallurgical industry.
Parameters of KERUI Magnesia Carbon Refractory Brick
Kerui scientifically proportions magnesium sand and graphite to effectively utilize the strong slag erosion resistance of magnesium sand and the high thermal conductivity and low expansion of carbon. The parameter table below provides technical details of the various models of magnesium carbon bricks.
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| Item | MT-8A | MT-8B | MT-10A | MT-10B | MT-12A | MT-12B | MT-14A | MT-14B | MT-16A | MT-16B | MT-18A | MT-18B | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| MgO, % | ≥ | 82 | 81 | 80 | 79 | 78 | 77 | 76 | 74 | 74 | 72 | 72 | 70 |
| C, % | ≥ | 8 | 8 | 10 | 10 | 12 | 12 | 14 | 14 | 16 | 16 | 18 | 18 |
| Apparent Porosity, % | ≤ | 4.5 | 5.0 | 4.0 | 4.5 | 4.0 | 4.0 | 3.5 | 3.5 | 3.5 | 3.5 | 3.0 | 3.5 |
| Bulk Density, g/cm³ | ≥ | 3.05 | 3.00 | 3.02 | 2.97 | 2.97 | 2.94 | 2.95 | 2.90 | 2.92 | 2.87 | 2.89 | 2.84 |
| Cold Crushing Strength, MPa | ≥ | 45 | 45 | 40 | 40 | 40 | 35 | 38 | 35 | 35 | 35 | 35 | 30 |
Introduction of Magnesia Carbon Bricks Properties
Strong Resistance to Slag Erosion
The magnesia carbon refractory brick can resist the erosion of steel slag very well. This is because graphite brings a small coefficient of friction and good lubrication performance. Therefore we often see magnesite carbon bricks with a smooth surface.
Good Thermal and Electrical Conductivity
Kerui magnesium carbon bricks have good thermal conductivity, which means that they are able to transfer heat quickly, which helps to achieve a uniform temperature inside the kiln. In addition, graphite has high electrical conductivity. So it’s one of the key reasons why it is suitable for use in steel electric furnaces.
High Working Temperature
The high melting point of high-quality graphite results in high service temperatures. This also means that magnesia refractory bricks incur very little mass loss and have a low coefficient of linear expansion in the face of continuously rising temperatures in the kiln. In addition to this, the strength of graphite increases with temperature.
Excellent Thermal Shock Resistance
When used at high temperatures, mag carbon bricks can withstand drastic changes in temperature without being damaged. A noteworthy point is that it does not produce volume changes or cracks, which effectively maintains the stable operation of the furnace.
Good Chemical Stability
Whether at high temperature or room temperature, MgO-C bricks have good chemical stability, especially the ability to resist alkali erosion. If you’d like to learn more information, welcome to follow Kerui Pinterest.
Magnesia Carbon Bricks Uses in Metallurgical Industry
The magnesia carbon bricks are used as kiln linings, which are difficult to be eroded by slag and are mainly used as linings for converters, AC arc furnaces, DC arc furnaces and slag lines of ladle refining furnaces.
In a high temperature environment, graphite can effectively prevent the penetration of slag. Moreover, MgO and C in the refractory bricks maintain their properties and compensate each other. This makes it the best choice for furnaces in the steel industry.
Magnesia Carbon Brick Manufacturers – Kerui Refractory
Advanced raw materials and technology: High purity magnesium sand, graphite, binding agent, etc.; newly upgraded automatic magnesia carbon bricks manufacturing process;
High quality products: Strict quality inspection system; ISO, CE, SGS certified; welcome to factory for inspection;
Stable supply capacity: Cooperate with famous enterprises in the industry; maintain stable supply capacity every year;
High-quality service: Professional solution provision; timely response;
