High carbon silicon is mainly composed of silicon and carbon. The silicon content is usually around 50%-65%, the carbon content is generally around 15%, and it also contains a small amount of impurities, such as iron, aluminum, calcium and other elements. The impurity content is relatively low, and the content of harmful impurities such as sulfur and phosphorus is usually strictly controlled within a certain range to avoid adverse effects on the quality of molten steel. The size is between 10-60mm. High carbon ferro silicon in this size range has good fluidity and permeability. During use, it can be more evenly distributed in the reaction system and fully contact with molten steel or other substances, thereby improving the reaction efficiency.

Performance and Advantages

This product achieves deoxidation, silicon addition, and carbon addition in one step, achieving high and stable Si and C yields. It can replace ferrosilicon + silicon carbide + a recarburizer, offering a more cost-effective alternative.

The high silicon activity, rapid deoxidation, and excellent diffusion deoxidation efficiency improve molten steel purity and reduce inclusions and slag.

It offers high density and low dust, enabling convenient charging and uniform furnace reaction, reducing dust and labor intensity.

High Carbon silicon

chemical composition

Chemical Composition %
Grade	Si	C	Al	S	P
Grade	≥		≤
Si68C18	68	18	3	0.1	0.05
Si65C15	65	15	3	0.1	0.05
Si60C10	60	10	3	0.1	0.05
Customized parameters	40-68	12-20

The advantages of high carbon silicon size 10-60mm in the steelmaking process are mainly as follows

Reaction efficiency

Appropriate contact area:

Its size is moderate. After being put into molten steel, it can fully contact with the molten steel. It will not be quickly oxidized or dissolved due to too small particles, resulting in too violent reaction and difficult to control, nor will it be too large to make the reaction contact area too small, affecting the reaction efficiency, so that deoxidation, carburization and other reactions can be carried out stably and efficiently.

Fast reaction speed:

The larger specific surface area allows the silicon and carbon in HC silicon to react quickly with the oxygen in the molten steel, and the generated oxides and carbides can float to the surface of the molten steel in time to form slag, thereby shortening the smelting time and improving steelmaking efficiency.

Composition control

Good deoxidation effect:

The silicon in hc fesi has a strong affinity with the oxygen in the molten steel, and can quickly react with oxygen to form stable oxides, effectively reducing the oxygen content in the molten steel, improving the purity of the steel, reducing the inclusions in the steel, and improving the quality and performance of the steel.

Precise carbon addition:

While deoxidizing, the carbon in high-carbon silicon will dissolve in the molten steel, playing a role in carbon addition. Its size is uniform, and the speed of dissolution and diffusion in the molten steel is relatively stable. The carbon content in the molten steel can be accurately adjusted according to the needs of different steel grades to meet the requirements of the production process, which helps to improve the strength, hardness and toughness of the steel.

Cost and environmental protection

Reduce costs:

It can replace some of the more expensive traditional deoxidizers and carburizers, such as ferrosilicon and silicon carbide, reduce the amount of deoxidizers and carburizers, and reduce steelmaking costs. At the same time, due to its good deoxidation effect, it can reduce the scrap rate caused by incomplete deoxidation, further saving costs.

Environmental protection and energy saving:

While deoxidizing, it also has a certain desulfurization effect, which can effectively reduce the amount of fluorite, reduce the concentration of toxic gas fluorine, and reduce environmental pollution. In addition, the use of high-carbon silicon can also reduce the consumption of raw and auxiliary materials and improve the comprehensive economic benefits of electric furnaces.

Operation and stability

Easy to operate:

High carbon silicon with a size of 10-60mm has good fluidity and air permeability. It is easy to control the amount and speed of addition when adding molten steel. It is easy to operate and can better adapt to different steelmaking processes and equipment.

Stable performance:

High carbon silicon has stable physical and chemical properties, high density, high purity, and is not easy to decompose and volatilize during the steelmaking process. It can stably play its role in deoxidation and carbon addition, ensuring the stability of the production process and the consistency of product quality, and reducing quality fluctuations caused by unstable material properties.

High Carbon silicon