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Magnesia carbon brick construction site

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Magnesia carbon brick construction site

Product attributes

  • Classification:Magnesia carbon brick
  • Product no. :1566963065
  • Number of visits:0
  • Date of issue:2019-10-15
  • Product overview
  • performance characteristics
  • Technical parameters


Magnesia carbon brick is a high melting point basic oxide magnesium oxide (melting point 2800 ° C) and a high melting point carbon material which is difficult to be infiltrated by slag as a raw material, and various non-oxide additives are added. A non-burning carbon composite refractory material formed by a combination of carbonaceous binders. Magnesia carbon brick is mainly used for the lining of converter, AC arc furnace, DC arc furnace, slag line of ladle and so on.


As a composite refractory material, magnesia carbon brick effectively utilizes the strong slag corrosion resistance of magnesia and the high thermal conductivity and low expansion of carbon, which compensates for the shortcomings of poor resistance to spalling of magnesia.


Its main features are: 1 has good high temperature resistance 2 strong slag resistance 3 good thermal shock resistance 4 low temperature creep low


The main raw materials for the production of magnesia carbon bricks, the quality of magnesia has a very important impact on the performance of magnesia carbon bricks. How to reasonably choose magnesia is the key to producing magnesia carbon bricks. Magnesia has fused magnesia and sintered magnesia, which have different characteristics. Fused magnesia: large crystal grains, less impurities, less silicate phase, high degree of direct grain bonding, and less grain boundaries.


For the magnesia raw material, in addition to the chemical composition, high density and large crystallization are required in terms of the structure. Therefore, as the quality index of the magnesia raw material for the production of magnesia carbon brick, the following contents should be examined: 1. Magnesium oxide content (purity) ).


The purity of magnesia has a significant impact on the slag resistance of magnesia carbon bricks. The higher the content of magnesium oxide, the less the impurities, the lower the degree of silicate phase division, the higher the degree of direct binding of periclase, the penetration resistance of slag and the melting loss of slag. The impurities in magnesia mainly include calcium oxide, silicon dioxide and iron oxide. If the content of impurities is high, especially the compound of boron oxide, it will adversely affect the refractoriness and high temperature performance of magnesia.


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