Product Name: Iron Disilicide (FeSi2) 
Specification: 0.8-10um (D50) 
Appearance: Irregular 
Color: Black Grey 
Characteristics: Stable under normal temperature and pressure 
Application: In the fields of chemical engineering, electronics, and materials, etc

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Iron Silicide 
Chemical formula: FeSi ₂ 
Molecular weight: 119.975 
CAS： 12022-99-0  
Melting point: 1410 ℃ 
Density: 4.79 g/cm ³ 
Performance: Insoluble in water, nitric acid, and hydrochloric acid, soluble in hydrofluoric acid and alkaline solution 
Appearance: Grey powder 
Production method of iron disilicide: 
Mix iron powder and silicon powder in a molar ratio of 1:2, and co crystallize or sinter them in a vacuum or inert atmosphere. 
Iron silicide is an inorganic substance with the chemical formula FeSi ₂, a gray powder, odorless, tetragonal crystal, insoluble in water. It can be used as a catalyst for hydrogen catalytic oxidation and methane formation, specifically as a deoxidizer for welding flux, humidity sensor, FeSi ₂ thermocouple, and thermoelectric solar cell. 
(1) Used as a deoxidizer and alloying agent in the steelmaking industry. In order to obtain steel with qualified chemical composition and ensure its quality, deoxidation must be carried out in the final stage of steelmaking. The chemical affinity between silicon and oxygen is high, so ferrosilicon is a strong deoxidizer for precipitation and diffusion deoxidation in steelmaking. Adding a certain amount of silicon to steel can significantly improve its strength, hardness, and elasticity. Therefore, ferrosilicon is also used as an alloying agent in the smelting of structural steel (containing 0.40-1.75% silicon), tool steel (containing SiO.30-1.8%), spring steel (containing SiO.40-2.8%), and silicon steel for transformers (containing 2.81-4.8% silicon). Simultaneously improving the morphology of inclusions and reducing the gas element content in molten steel is an effective new technology for improving steel quality, reducing costs, and saving iron. Specially suitable for deoxidation requirements of continuous casting molten steel, practice has proven that ferrosilicon not only meets the deoxidation requirements of steelmaking, but also has desulfurization performance and advantages such as high specific gravity and strong penetration. In addition, in the steelmaking industry, silicon iron powder is often used as a heating agent for steel ingot caps to improve the quality and recovery rate of steel ingots due to its ability to release a large amount of heat at high temperatures. 
(2) Used as an inoculant and spheroidizer in the cast iron industry. Cast iron is an important metal material in modern industry. It is cheaper than steel, easier to melt and smelt, and has excellent casting performance and much better seismic resistance than steel. Especially ductile iron, its mechanical properties reach or approach those of steel. Adding a certain amount of ferrosilicon to cast iron can prevent the formation of carbides in iron, promote the precipitation and spheroidization of graphite. Therefore, in the production of ductile iron, ferrosilicon is an important inoculant (helping to precipitate graphite) and spheroidizing agent. 
(3) Used as a reducing agent in the production of ferroalloys. Not only is there a high chemical affinity between silicon and oxygen, but the carbon content of high silicon ferrosilicon is also very low. Therefore, high silicon ferrosilicon (or silicon alloy) is a commonly used reducing agent in the production of low-carbon ferroalloys in the ferroalloy industry. 
(4) Ferrosilicon is commonly used in the high-temperature smelting process of magnesium metal in the Pidgeon process, where CaO is added Replacing magnesium in MgO consumes about 1.2 tons of ferrosilicon for every ton of metallic magnesium produced, which plays a significant role in the production of metallic magnesium. 
(5) For other purposes. Finely ground or atomized silicon iron powder 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.