Why is crystalline flake graphite a raw material of magnesia carbon brick

Posted by annesheldon on July 4th, 2017

1.The melting point of high temperature resistant graphit is 3850℃±50℃, and boiling point 4250℃, after burnt by ultrahigh temperature arc, the mass loss is small, and the coefficient of linear expansion is small. The strength of graphit will get higher with the increase of temperature, it will be doubled at 2000℃; If you need any refractory products, such as fire brick for sale, refractory raw materials, refractory nozzle and other refractory products. 

2.Electrical conductivity and thermal conductivity. The electrical conductivity of graphit is one time higher than normal nonmetallic ore. Its thermal conductivity is even higher than some metals like steel, iron, lead, etc.. Thermal conductivity goes lower as temperature increase. Graphit can become thermal insulator at superhigh temperature;

3.Lubricating property. The lubricating property of graphit depends on the size of flake, the biger the flake, the smaller the friction coefficient, the better the lubricating property;

4.Chemical stability. Graphit has excellent chemical stability under normal temperature, it is resistant to the erosion of acid, alklai and organic solvent;

5.Plasticity. Graphit has good plasticity, can be grinded very thin;

6.Thermal shock resistance. Graphit is able to endure the drastic changes of temperature, volume change is small and there will be no crack.There have many kinds of refractory products in our factory. Such as fire brick, Magnesia Carbon brick, refractory raw materials, refractory nozzle and other refractory products.

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