Production process and specific application of coal carburizer

Production Process of Coal-based Recarburizer

1. Raw Material Selection:

• Select high-quality anthracite or coal with low ash, low sulfur, and high fixed carbon content as raw material.

2. Crushing and Screening:

• The raw coal is initially crushed and screened into particles of different sizes to ensure uniform particle size distribution.

3. Calcination:

• The crushed coal is calcined in a high-temperature furnace at temperatures ranging from 1200°C to 1400°C. During calcination, the volatile matter in the coal is removed, increasing the carbon content.

4. Cooling and Grinding:

• After calcination, the coal is cooled and then subjected to secondary crushing and grinding to achieve the desired particle size.

5. Screening and Packaging:

• The ground coal-based recarburizer is screened to obtain the required particle size range, then packaged for shipment.

Specific Applications of Coal-based Recarburizer

1. Steelmaking:

• Used as a recarburizer in electric arc furnace (EAF) and basic oxygen furnace (BOF) steelmaking to effectively increase the carbon content in molten steel, adjust the composition, and improve steel quality.

2. Foundry Industry:

• Applied in the production of cast iron parts to enhance the strength and hardness of the castings, improving the quality and surface finish of the castings.

3. Metallurgical Industry:

• Used in the smelting of special alloys and ferroalloys as a reducing agent and recarburizer to increase the carbon content and quality of the products.

4. Other Applications:

• Also applicable in the chemical industry and carbon products as a carbon source or additive to improve product performance.