What are the application fields of charcoal?

Author:Suny Group

1.Metallurgical industry

In the past, charcoal was used to smelt iron ore. The pig iron smelted from charcoal and coke had different structures and mechanical properties even though they had the same chemical composition. The pig iron smelted with charcoal generally has a fine-grained structure, compact castings, and no cracks. The pig iron produced with charcoal contains less impurities and is suitable for producing high-quality steel. Because charcoal is reducing, it can be used in the metallurgical industry to reduce ore smelting metals.

In the production of non-ferrous metals, charcoal is often used as a surface flux. When non-ferrous metals melt, the surface flux forms a protective layer on the surface of the molten metal, separating the metal from the gaseous medium, which can reduce the splash loss of the molten metal and reduce the melting The saturation of the gas in the gas.


A large amount of charcoal is also used in the production of crystalline silicon. The charcoal used for the production of crystalline silicon should not contain a green carbon head and excessive ash.

2. Carburizing agent manufacturing

All steel products that require high hardness and wear resistance on the surface and good toughness in the center should be carburized. The carbonaceous mixture used to carburize steel products is called carburizing agent. The carburizing effect of pure charcoal is poor. Therefore, charcoal is often used as a raw material, and a certain amount of contact agent is added to make a carburizing agent.

3. Carbon disulfide production

Charcoal is the best raw material for making carbon disulfide. The charcoal used to make carbon disulfide should be hard, large in volume, small in ash and moisture content, and high in fixed carbon content.

It takes about 0.5 tons of charcoal to produce 1 ton of carbon disulfide.

4.Charcoal Desiccant

It is composed of several kinds of natural minerals. It is non-toxic and harmless and is a degradable and environmentally friendly desiccant. The moisture absorption rate is over 50%.

Related Introduction

Charcoal is a dark brown or black porous solid fuel that remains after wood or wood raw materials have been incompletely burned or pyrolyzed under conditions of isolation from air.

The main component of charcoal is carbon. The ash content is very low. The calorific value is about 27.21 ~ 33.49 MJ / kg. In addition, there are hydrogen, oxygen, nitrogen, and a small amount of other elements. The content of charcoal has little to do with the tree species. Final temperature. Charcoal is a hydrophobic substance, with ash content within 6%, pores occupying more than 7% of the charcoal volume, and the proportion is generally 1.3 to 1.4. The caloric value depends on the carbonization conditions, and is generally around 8000 kcal / kg. The charcoal's reducing capacity is greater than coke . Charcoal has a large number of micropores and transitional pores, which not only has a high specific surface area, but also has good adsorption performance after the tar substances in the pores are eliminated. Complete combustion with oxygen produces carbon dioxide, incomplete combustion produces toxic gas carbon monoxide. More loose.