Magnesia Carbon Brick

Magnesia Carbon Brick is a resin-bonded brick produced from dead-burned or fused magnesia and graphite, with some metallic powder as anti-oxidants to protect the carbon durability. MgO-C bricks are used extensively in high quality steel alloy making processes especially in basic oxygen furnaces, electric arc furnaces, ladle refining furnances,and is widely popular in the steelmaking industry. Magnesia Carbon Brick is mainly used in the converter lining, which is in direct contact with molten steel and molten slag. Mag Carbon Bricks have been used in the ladle refining slag line and has achieved good results. It is also used in the lining part of AC electric arc furnace, DC electric arc furnace, converter and other components.

Magnesia Carbon Bricks Introduction:

Magnesia carbon brick is a kind of non-burning carbon composite refractory, made from alkaline magnesium oxide and high melting point (2800℃) carbon material, also add some kinds of non-oxide additive and carbon binder, which are difficult to be eroded by furnace slag. It is a kind of non-burning product.

As a composite refractory material, magnesia carbon brick effectively utilizes the strong slag erosion resistance of magnesia, high thermal conductivity and low expansion of carbon, which compensates the biggest disadvantage of poor resistance to flaking of magnesia.Magnesia-carbon brick is mainly used in converter, EFA, DC electric arc furnace lining, steel ladle, RH furnace, etc.  Specification should be different according to different furnaces/kilns, standard shapes and customized drawings are acceptable.

Magnesia Carbon Bricks Advantages:

  1. Good high temperature resistance
  2. Strong anti-slag penetration resistance
  3. Resistance to thermal shock
  4. High Corrosion resistance to slag
  5. Non-Wettability to molten slag
  6. Increases lifespan of the vessal.
  7. Low thermal expansion

Magnesia Carbon Bricks Uses

MgO-C (magnesia-carbon) refractory bricks are widely used in steel industry, the primary consumer of refractory linings, such as basic oxygen furnaces, electric arc furnaces, and ladle furnaces. The steelmaking requires extreme chemical, thermal and mechanical conditions that demand a high performance of materials, able to withstand the action of the steel bath and slag.

MgO-C (magnesia-carbon) refractories are widely used in several steelmaking linings. These refractories are exposed to extreme stress due to high temperatures (T > 1600 °C) required to cause the metallurgical reactions.


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