Ferrosilicon is an iron alloy composed of iron and silicon. Ferrosilicon is an iron silicon alloy made by smelting coke, steel shavings, quartz (or silica) as raw materials in an electric furnace; Silicon iron particles are formed by crushing silicon iron into small pieces in a certain proportion and filtering through a certain number of sieve leaks. Simply put, silicon iron particles are small particles selected by crushing natural and standard silicon iron blocks according to different particle sizes. Currently, they are widely used as inoculants in foundries on the market.
The use of ferrosilicon:
1. Ferrosilicon is a deoxidizer in the steelmaking industry. In steelmaking, ferrosilicon is used for precipitation deoxygenation and diffusion deoxygenation. Brick iron is also used as an alloying agent in steelmaking;
2. Used as an inoculant and spheroidizer in the cast iron industry. In the production of ductile iron, 75 silicon iron is an important inoculant (helping to precipitate graphite) and spheroidizing agent;
3. Used as a reducing agent in ferroalloy production. Not only is the chemical affinity between silicon and oxygen high, but the carbon content of high silicon ferrosilicon is also very low. Therefore, high silicon ferrosilicon (or siliceous alloys) is a commonly used reducing agent in the production of low-carbon ferroalloys in the ferroalloy industry.
Effect of ferrosilicon particles:
Silicon iron particles can not only be used in the steelmaking industry but also as a commonly used metallurgical material in the cast iron industry. This is mainly because silicon iron particles can be used by cast iron manufacturers to replace inoculants and spheroidizers. In the cast iron industry, the price of silicon iron particles is much lower than that of steel, and they are more easily melted, making them an iron alloy product with good casting ability. A good silicon iron particle inoculant with uniform particle size and good inoculation effect during casting can promote the precipitation and spheroidization of graphite, which is a metallurgical material for producing ductile iron.