The introducation of magnesia carbon brick

Magnesium carbon brick are alkaline refractory materials, the alkali slag has a strong resistance, but can not resist the erosion of acidic slag, at 1600 ℃ high temperature, and silicon brick, fire clay brick or even high alumina brick contact can react. MgO melting point of up to 2800 ℃, magnesium brick refractoriness above 2000 ℃, but its load softening point is very low, only 1500-1550 ℃. This is because the magnesite is surrounded by low melting point of calcium forsterite (CaO · MgO · SiO2) and glass phase bonded, and the magnesite does not form a continuous crystallization network, the load deformation temperature is very low, and start Softening to 40% deformation of the temperature interval is very small, only 30-50 ℃. Magnesium carbon brick of the thermal stability is also poor, in the rapid quenching and cooling is easy to crack, which is an important reason for the damage of magnesia bricks.

In the furnace and the soaking furnace, the magnesia bricks are mainly used for paving the bottom surface of the furnace and the lower part of the furnace wall, which can resist the erosion of iron oxide skin. Magnesia refractories are magnesium and aluminum bricks, magnesia chrome brick, magnesium silicate brick and so on. In order to improve the thermal stability and high temperature strength of magnesia bricks, industrial alumina powder can be added into the ingredients to produce magnesium and aluminum bricks combined with magnesium spinel, which can be successfully used as high temperature furnace materials, There are parts of alkaline slag erosion. Sintered magnesia by adding different amounts of chromite, can be made of magnesia chrome brick, chrome magnesia brick. The furnace and the soaking furnace are sometimes used to separate the magnesia brick from the silica brick or fire clay brick to prevent these bricks from acting at high temperatures. Foreign such brick in the steel industry occupies an important position, according to the characteristics of China's major development of magnesium and high aluminum brick.

Article Source: Magnesia Carbon Brick
Company name: Wanhao Refractory
Email:sales100@wanhaorefractory.com
Website:http://www.wanhaorefractory.com/
http://www.wanhaorefractory.com/Uploads/56a1c08f87524.jpg

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