wanhaorefractory

Magnesia carbon brick is made from high melting point alkaline oxide and high melting point carbon material that is difficult to be infiltrated by slag and various non-oxide additives are added. Magnesia carbon bricks is mainly used for converter, ac arc furnace, dc arc furnace lining, ladle slag line and so on. As a composite refractory , magnesia carbon brick has been used to effectively utilize the slag resistance of magnesia and high thermal conductivity and low expansibility of carbon. Wanhao is a manufacturer who is specialized in designing various kinds of furnace and making refractory products for electric furnace, ladle, tundish, blast furnace, AOD furnace, IF furnace, etc.

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 ar...

Magnesite is the main refractory raw material for magnesia carbon brick , normally there are two kinds, sintered magnesite and fused magnesite. Bu comparing this two kinds, fused magnesite has the advantages of lager periclase crystal, bigger bulk density, etc.it is the priority raw material for producing magnesia carbon bricks . When producing normal magnesia based refractory material, the requirements on megnesite are high temperature resistance and erosion resistance, thus the purity of magnesite, C/S ratio and B2O3 content are important. With the development of metallurgy industry, the smelting condition is becoming harder, the requirement of megnesite used for producing magnesia carbon brick used in smelting equipment(such as Converter, EAF, Ladle) is not only on the chemical composition, but also on structure like high density and large crystal. There have many kinds of refractory products in our factory. Such as fire brick for sale, refractory raw material,  ...