Three classification of refractory material according to temperature

Refractory material is a class of inorganic non metallic materials which the fire degree not lower than 1580 ℃. Refractoriness is refractory cone specimen under no load condition, resistance to high temperature without melting temperature in Celsius. Here we introduce three classification index of refractory material:

Can be divided into the ordinary refractory material: 1580 ~ 1770 ℃ refractoriness, refractoriness 1580 ~ 1770 ℃ is equivalent to Al2O315% ~ SiO2-Al2O3 two yuan in 45% refractory products, the main mineral composition of raw materials are the kaolinite.

Can be divided into high-grade  refractory materials:refractoriness 1770 ~ 2000 ℃, high aluminum bricks, magnesia brick, Mo to ordinary products, magnesia brick, of common magnesia chrome brick, brick belongs to this class of olive.

Can be divided into super refractory material: Refractory degree is higher than 2000 ℃, pure oxide products, casting products, high purity magnesia chrome brick, magnesia spinel brick, non oxide products belonging to this class.