Ferrosilicon is also a well-known alloying element among industry professionals
But do you really have that much understanding of the characteristics of ferrosilicon?
Ferrosilicon is an indispensable element in steelmaking,Poor steelmaking effect,Maybe it’s just useless for ferrosilicon!
What are the special features of ferrosilicon
Is it unknown?
One sentence summary
A widely used ferroalloy variety in the ferrosilicon market. It is a silicon iron alloy composed of silicon and iron in a certain proportion, and is an indispensable material for steelmaking, such as FeSi75, FeSi65, and FeSi45.
Status: Natural block, gray white, with a thickness of about 100mm. (Whether there are cracks on the appearance and whether the knocking sound is clear when touched by hand) Raw material composition: Ferrosilicon is made by smelting coke, steel filings (iron oxide scale), quartz (or silica) in an electric furnace. Main production areas: Ningxia, Inner Mongolia, Qinghai, Gansu, Sichuan, and Henan Commonly used brands:FeSi75
Why is ferrosilicon essential in steelmaking?
Due to the strong affinity between silicon and oxygen, the addition of ferrosilicon in steelmaking results in the following deoxidation reaction:
2FeO+Si=2Fe+SiO ₂
Silicon dioxide is a product of deoxidation, which is lighter than molten steel. It floats on the surface of steel and enters the slag, thereby removing oxygen from the steel. It can significantly improve the strength, hardness, and elasticity of steel, increase its magnetic permeability, and reduce the hysteresis loss of transformer steel.
Silicon content of different types of steel
What are the other uses of ferrosilicon?
1. Used as an inoculant and spheroidizer in the cast iron industry;
2. Adding ferrosilicon as a reducing agent when smelting certain ferroalloy products;
3. Due to its important physical properties of low conductivity, poor thermal conductivity, and strong magnetic conductivity, silicon iron is also used as an alloying agent in the production of silicon steel.
4. Ferrosilicon is commonly used in the high-temperature smelting process of metallic magnesium in the Pijiang process for magnesium smelting
5. Other uses. Silicon iron powder that has been finely ground or atomized can be used as a suspended phase in the mineral processing industry. It can be used as a coating for welding rods in the welding rod manufacturing industry. High silicon ferrosilicon can be used in the chemical industry to manufacture products such as silicone.
