Introduction to the types of refractory materials

Refractory materials are a class of materials that can withstand high temperatures and maintain their physical and chemical properties under extreme conditions. Refractory materials are widely used due to high temperature resistance, and common refractory materials are divided into the following categories.

Classification of refractories

Refractories can be divided into acidic refractory materials, neutral refractories and basic refractories according to their chemical characteristics, and can also be divided into light refractory material and heavy refractory material according to their density. According to the shape, it can be divided into shaped refractory materials and unshaped refractory materials. The shaped products are various refractory brick products, и unshaped products are various огнеупорные бетоны.

Type one refractory material ：огнеупорный кирпич

Shaped refractories can be divided into heavy refractory bricks and легкий изоляционный кирпич.

Heavy refractory bricks are represented by кирпичи с высоким содержанием глинозема, which are formed and calcined from bauxite or other materials with high alumina content. It is often used as a fabric for masonry steelmaking electric furnaces, glass melting furnaces, and cement rotary furnaces.

Lightweight insulation bricks are represented by муллитовые изоляционные кирпичи. Помимо муллита, those with low alumina content also contain a small amount of glass phase and cristobalite. They are mainly used for hot blast stove tops, blast furnace shafts and Furnace bottom, glass melting kiln regenerator, печь для спекания керамики, dead corner lining of petroleum cracking system, и т. д..

Type two refractories: Unshaped refractories

Unshaped refractories refer to various types of refractory отливки, пластмассы, напыление покрытий, и т. д..

Unshaped refractory materials are convenient for construction, strong adaptability, stable performance, and easy maintenance. They are usually used in linings, stockpiles, furnace walls, flues and other parts of high-temperature equipment. Such as blast furnace, converter, электрическая печь, стекольная печь, cement kiln and other fields.