Desulfurization Principle: CaC₂ + S → CaS + C
Deoxidation Principle:CaC₂ + O₂ → CaO + CO₂
Calcium carbide can be introduced into molten steel in the form of blocks, powder, or granules. There are mainly two methods for desulfurizing molten steel: blowing and stirring.
Blowing involves uniformly spraying calcium carbide powder into molten steel using a blowing device. This method excels in desulfurization efficiency and uniform mixing, making it suitable for applications demanding high desulfurization effectiveness.
On the other hand, stirring directly adds calcium carbide material into the molten steel, utilizing mechanical equipment to mix the steel and calcium carbide. This method is simpler and more flexible, suitable for production environments of various scales.
The choice of desulfurization method typically depends on specific production needs, cost considerations, and equipment conditions.