Steel Desulfurization Process

The world's leading calcium carbide supplier.

Desulfurization

Desulfurization Principle: CaC₂ + S → CaS + C

Deoxidation Principle:CaC₂ + O₂ → CaO + CO₂

Function:

In the steelmaking process, calcium carbide is used to remove sulfur from molten steel, reduce oxygen content, improve the toughness and strength of the steel, and enhance the overall quality of the steel.

Applications:

The amount of calcium carbide used for desulfurization is typically 5-10 kg per ton of steel.

The amount of calcium carbide used for deoxidation is usually 2-6 kg per ton of steel.

Calcium carbide is widely used in electric arc furnaces and converter steelmaking processes, producing various types of carbon steel, alloy steel, special nitrided steel, and other steel grades.

Desulfurization Process

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.

TYWH Solutions

Different calcium carbide particle sizes affect the speed and efficiency of desulfurization reaction

We provide customized calcium carbide particle size services. Through advanced crushing and screening technology, we can customize the calcium carbide particle size that best suits customers' production needs. The optimized calcium carbide particle size can significantly improve the uniformity and efficiency of the desulfurization reaction while reducing the required amount of calcium carbide.

Treatment of by-product CaS

We maintain close cooperation with calcium sulfide curing agent suppliers and can provide customers with customized curing agent options. By mixing calcium sulfide with an appropriate curing agent to form a stable solid block, it can effectively reduce its potential impact on the environment and effectively assist customers in completing the treatment of calcium sulfide by-products.

Unstable supply of calcium carbide

We have established good cooperative relationships with a number of high-quality raw material suppliers to ensure stable supply, reasonable prices and excellent quality. At the same time, our annual production capacity reaches 120,000 tons, which can ensure production capacity and supply stability. With stable raw material supply and high production capacity, we provide customers with reliable calcium carbide supply.

Customer Case

Background

A Japanese steelmaking company faced a significant challenge with the unstable supply of calcium carbide particles smaller than 15mm, leading to production interruptions.

Solution and Results

To address the issue of low output ratio for particles smaller than 15mm, we provided a solution with a 5% higher output ratio compared to industry standards. Leveraging our 8 automated production lines and large-scale manufacturing capacity, we ensured accurate particle size and stable production. This solution achieved 100% production stability for the client and improved desulfurization efficiency by 20%. The client not only stabilized production but also reduced costs and increased benefits. By choosing our professional services and customized solutions, you will gain a reliable partner and achieve mutual success.

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