Magnesia carbon brick belongs to magnesia carbon refractory. Refractory supplier RS sales all kinds of magnesia carbon bricks with high quality. Magnesia carbon brick is made of magnesium oxide, and carbon material with high melting point as raw materials, together with all kinds of oxide additives. Mag carbon bricks are featured with high temperature resistance, strong slag resistance, good thermal shock resistance, and low high temperature creep rate. Mgo c brick is mainly used in converter, ac arc furnace, dc electric arc furnace lining, and the ladle, etc.
The main raw materials of magnesia carbon brick including magnesite, flaky graphite, organic binder and antioxidant. Magnesite is the main raw material of MgO C brick. There are two types, one is fused magnesite and the other is sintered magnesite, and they have different characteristics. Compared with sintered magnesite, fused magnesite is featured with bulky periclase crystals, and high bulk density of the particles. Magnesite quality has a very important influence on the magnesia carbon brick. How to reasonably choose magnesia is the key to the production of magnesium carbon brick.
Graphite as the main raw material of MgO C brick, mainly due to its excellent physical performance: Non-wetting for slag, high thermal conductivity, and low thermal expansion. In addition, graphite is not eutectic with refractories at high temperature.it has high refractoriness.
Raw materials: magnesite, flaky graphite
Organic binder: coal tar, coal pitch, asphalt, as well as special carbon resin, polyol, asphalt modified phenolic resin, synthetic resin, etc.
In order to improve the oxidation resistance of MgO C brick, it is added to additives. The functions of the additives can be elaborated from two aspects: On the one hand, from the thermodynamics aspect. In the working temperature, additives reacts with carbon, thus generates other material, which is more easily oxidized compared with carbon, thus protecting the carbon. On the other hand, from the dynamics aspect. Additives react with oxygen, carbon monoxide or carbon changing the microstructure of carbon composite refractories, such as increasing density, clogging pores, and preventing oxygen or other reaction products from spreading and so on. Commonly used binders of the mag carbon bricks are coal tar, coal pitch, asphalt, as well as special carbon resin, polyol, asphalt modified phenolic resin, synthetic resin, etc.
Magnesium oxide doesn’t fuse with carbon when magnesia carbon brick is used under high temperature, therefore, keeping the good refractory performance of the original components. Furthermore carbon is featured with good thermal conductivity, low thermal expansion and elastic coefficient, which effectively prevent spalling and slag penetration, thus greatly change the weakness of the magnesia refractory, such as the slag penetration.
In addition, because of the wettability of carbon for the slag, mgo c bricks have good corrosion resistant performance.
Magnesia carbon brick, as a kind of composite refractory materials, takes advantage of the strong slag erosion resistance ability of magnesia and the high thermal conductivity as well as low expansibility of carbon, which effectively makes up for the spalling resistance, which is the biggest disadvantage of the poor magnesia.
In conclusion, because mag carbon bricks belong to mgo c refractories, so such products have good high temperature performances, such as good thermal shock resistance, corrosion resistance, spalling resistance, and low high temperature creep rate, becoming the ideal materials used on the furnace.
Zhengzhou Rongsheng Kiln Refractory Co. Ltd, established in the early 90s of twenty century, located in the foot of Mount Song, a place of Xinmi city, which is in the middle of Zhengshao Expressway. The abundant high quality materials and convenient transportation, neighboring the Longhai and Jingguang railway lines, provide favorable conditions for the production of the refractory materials. After 20 years of hardworking and development, it has become a comprehensive enterprise producing refractory materials in metallurgy, building materials, electric power and chemical industry, etc.
There are about 1262 employees, including senior technical personnel 65, high-tech workers 80 and complete physical and chemical testing equipment and advanced detection methods. The credit rating is AAA grade, and the economic indicators and the enterprise technical force, namely the scale keep the leading position in the domestic industry.
Refractory bricks: high alumina bricks, carbon bricks, fireclay bricks, silicon bricks and magnesia bricks, etc.
Unshaped refractory materials:refractory castable, high alumina cement, and calcined bauxite aggregate, etc.
Strict quality management system: it works according to the standard of ISO9001 from the materials, producing to the testing. Professionals strictly check at every process. In addition, Rongsheng has established cooperative relations with multiple scientific research institutes, so we ensure you the superior quality of magnesia carbon bricks.
Professional sales and after-sales service team: they offer consumers the best all-round services in applications, construction and installation, operation and technical training, etc. Rongsheng has exported such magnesia carbon bricks to Ireland, Banglagdesh, Indonesia, Vietnam, etc.
