Ferro Silicon

Ferrosilicon (FeSi) is an alloy of iron and silicon that is principally used in steelmaking for deoxidation and as an alloying component.

In steelmaking, ferrosilicon is used for:

• Product performance – Ferrosilicon is a convenient way of adding silicon as an alloying element, to improve various properties of the final steel.
• Slag reduction – In the manufacture of stainless steels, the presence of silicon reduces chromium oxides in the melt, improving recovery of metallic chromium.
• Deoxidation – Ferrosilicon provides quick-acting removal of oxygen from the melt, so avoiding the presence of inclusion-forming oxides and avoiding loss of desirable elements.
• Fuel – Some steel mills add ferrosilicon to the melt so that it can be burnt off to get heat into the furnace, and so reduce energy costs.

What are the types of ferrosilicon?

• Low-carbon ferrosilicon and ultra-low-carbon ferrosilicon – Used to avoid re-introducing carbon during the manufacture of stainless steel and electrical steel.
• Low-titanium (high-purity) ferrosilicon – Used to avoid TiN and TiC inclusions in electrical steel and some special steels.
• Low-aluminium ferrosilicon – Used to avoid the formation of hard Al₂O₃ and Al₂O₃–CaO inclusions in a range of steel types.
• Special ferrosilicon – A general term that covers a range of tailor-made products containing other alloying elements.

melting point	Bulk density	Special Weight
1240 - 1350	1.6	3.2

 

Grading (mm)

• (10 – 100)
• (60 – 80)
• (10 – 60)
• (3 – 10)
• (0 – 3)

Major applications

• Operating deoxidizer in steel
• That increase in the production of steel and iron alloy of silicon high silica
• Factors modifiers in graphite cast iron (spherical knotted sheets)
• The magnesium ferrosilicon alloys for the production of ferro manganese and silicon
• For the production of graphite electrodes used in welding

 

packing

• 1 MT Big Bag
• Bulk in container
• FeSi (0-3)mm in 10kg bags