Carbonaceous materials have many advantages and are widely used in steel, non-ferrous metals, and other industries. Carbon has stable chemical properties, high thermal conductivity, good electrical conductivity, low linear expansion coefficient, strong thermal shock resistance, is not wetted by most molten metals, and has good wear resistance and corrosion resistance. It is used for refractory materials with high strength but easy oxidation. Carbon-containing refractories are typical neutral refractories, which can be made into fired carbon bricks, self-fired carbon bricks, silicon carbide bricks, and amorphous carbon ramming materials.

Carbon materials in refractory materials include common graphite, carbon materials, silicon carbide, etc.

1. Graphite

Graphite is the main raw material and an important component of graphite products (such as graphite clay products, and graphite silicon carbide products). China has the largest natural graphite reserves in the world. According to the crystalline form of graphite, it can be divided into flake graphite, block graphite, and unformed graphite.

                                                                                                                                    example：graphite electrode

2. Carbon materials

Carbon accouterments used in refractories include coke, anthracite, etc. Carbon materials are widely used in steelmaking, steelmaking, and non-ferrous smelting.

(1) Coke

Coke is an amorphous carbon. In industrial production, use bituminous coal or some substances with high carbon content (such as petroleum pitch, residual oil, coal tar pitch, etc.) to heat the air adiabatically to make it coke. The product of coal coking is metallurgical coke, the product of petroleum pitch or residual oil painting pitch is petroleum coke, and the product of coal navigator pitch coking is pitch coke.  Metallurgical coke is mainly used as blast furnace fuel and reducing agent for steelmaking, and can also be used to produce various carbon blocks and carbon electrodes; the other two cokes are used relatively less.

(2) Anthracite

Anthracite is an important raw material for the production of carbon bricks, silicon carbide, carbon electrodes, electrode pastes, and bottom pastes.

3. Silicon carbide

Silicon carbide is also a very common refractory material with a wide range of applications. It can be used for refractory bricks and amorphous materials, effectively improving product quality and service life.

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