Refractory

How Magnesia Carbon Brick Is Made and Recycled

  • Tuesday, 06 September 2022
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How Magnesia Carbon Brick Is Made and Recycled

Magnesia carbon brick can be recycled using several different methods.magnesia carbon brick These methods include mixing, crushing, and dewatering. The final step in the recycling process involves eliminating carbon via a burning pond. The recycled material is then regenerated and used as a basic refractory material in steel ladles.

The raw materials used in the manufacturing process are mixed with a phenolic resin. This type of resin binds with the raw materials well and forms strong carbon bonds. Phenolic resin is much less harmful to the environment than tar. These bricks are then molded and pressed under high pressure to ensure the highest quality. The process of molding depends on the raw material, kilns, and other conditions.

Magnesia carbon bricks are mainly composed of magnesium oxide. Its melting point is very high, which makes it a suitable material for high-temperature applications. It is also resistant to slag and corrosion. These properties make it a good material for refractory bricks in a variety of industries.

Graphite has been used as a refractory in magnesia carbon brick production. This material can improve the thermal conductivity of the brick while decreasing the risk of thermal shock. Carbon can be added to refractory oxide grains to improve chemical corrosion resistance. It can also improve the refractory's reactivity to thermal shock.

The basic wear mechanisms of MgO-C brick are oxidation, corrosion, and MgO-carbon reaction. The addition of metals like aluminum, magnesium, silicon, and boron has also been studied as a possible additive. Those additives have been found to improve the brick's strength and resistance to corrosion.

The most common binder used for magnesium carbon bricks is resin. It contains a large amount of fixed carbon and has high chemical affinity with magnesia grain and graphite. Additionally, resin exhibits high dry strength due to its thermosetting nature. Furthermore, unlike tar, it produces fewer hazardous gases. It also has a high cold crushing strength.

Graphite is also an important part of MgO-C bricks. The size of graphite particles has an impact on the strength of the brick. When the graphite particles are large, they reduce the strength of the brick. They also decrease the hot strength of the brick.

The use of MgO-C bricks is growing in popularity as a refractory for BOFs. Its durability is greater than that of dolomite-carbon bricks, and this has led to their increasing application as a BOF refractory. Initially, the MgO-C bricks were used in the high wear areas of the BOF and were gradually integrated into the entire furnace. These applications have improved the life of the linings of BOFs.

However, there are some drawbacks to the use of MgO-C bricks in steelmaking. The slag will not be resistant to the steel, and the slag may penetrate the brick. The amount of carbon and slag in a refractory brick will determine how resistant it is to slag corrosion.

Tags:fire clay brick | acid proof brick | high alumina brick

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