There are many types of inoculants, which can be divided into the following according to different methods. First, according to the composition of components: silicon inoculant, which mainly refers to ferro silicon 72 grains, carbon inoculant, rare earth inoculant. Second, according to the function of inoculant, it is divided into: ink inoculant, stabilized inoculant, compound inoculant. Third, according to the scope of use, it is divided into: inoculant for gray cast iron, inoculant for ductile iron, inoculant for as-cast ductile iron, inoculant for cast iron. Ferrosilicon inoculants are one of the most common types.
Ferrosilicon inoculant is an ferro alloy, made of coke, steel scrap, quartz (or silica) and smelted in an electric furnace. It is mainly composed of silicon and iron. Silicon and oxygen are easy to synthesize silica, so ferrosilicon is often used as a deoxidizer in steelmaking. At the same time, a large amount of heat is released during the formation of SiO2, which can increase the temperature of molten steel and reduce energy consumption while deoxidizing. Ferrosilicon can also be used as an alloying element additive, widely used in low alloy structural steel, spring steel, bearing steel, heat resistant steel and electrical silicon steel. Ferrosilicon is often used as a reducing agent in iron alloy production and chemical industry. Ferrosilicon inoculant conventional sizes are 0.2-0.8mm, 1-3mm, 3-8mm.