Use of Ferrosilicon

         (1) Used as a deoxidizer and a gold alloy in the steelmaking industry. In order to obtain chemical composition of qualified steel and to ensure the quality of steel, in the final stage of steelmaking must be deoxidized, silicon and oxygen between the chemical affinity is large, so ferrosilicon is a strong steel oxide for precipitation and diffusion deoxidation. In the steel to add a certain amount of silicon, can significantly improve the strength of steel, hardness and flexibility, and thus in the smelting of structural steel (containing 300 ~ 70%), tool steel (containing SiO.30-1.8%), spring Steel (containing SiO00-2.8%) and silicon steel for transformers (2.81-4.8% silicon), ferrosilicon is also used as a gold alloy. In addition, in the steel industry, the use of ferrosilicon powder at high temperature olefins can release a lot of heat this feature, often used as a steel ingot heating agent to improve the quality and recovery of ingots.

         (2) Used as inoculants and nodulizers in the cast iron industry. Cast iron is an important metal material in modern industry, it is cheaper than steel, easy to melt smelting, with excellent casting performance and much better than the steel engage in seismic capacity, especially ductile iron, its mechanical properties to reach or close to the steel Mechanical behavior. The addition of a certain amount of ferrosilicon in the cast iron can prevent the formation of carbides in the iron and promote the precipitation and spheroidization of graphite. Thus, in the production of ductile iron, ferrosilicon is an important inoculant (to help the precipitation of graphite) and nodular The

         (3) Ferrous alloy production as a reducing agent. Not only between the silicon and oxygen chemical affinity is very large, and high silicon ferrosilicon carbon content is very low. Therefore, high silicon ferrosilicon (or siliceous alloy) is a ferroalloy industry in the production of low-carbon ferroalloy is more commonly used as a reducing agent.

         (4) The use of other aspects. Milled or atomized treated ferrosilicon powder can be used as a suspension phase in the beneficiation industry. In the electrode manufacturing industry can be used as electrode coating. High silicon ferrosilicon in the chemical industry can be used to manufacture silicone and other products.

          In these applications, the steelmaking industry, the foundry industry and the ferroalloy industry are the largest users of ferrosilicon. They consume about 90% more ferrosilicon. Among the various grades of ferrosilicon, the most widely used is 75% ferrosilicon. In the steel industry, each production of 1t steel consumption of about 3-5kg75% ferrosilicon. Silica grades and chemical composition

          Chemical grade SiAlCaMnCrPSC

          The range is not greater than

          FeSi75AI1.0-b72.0-80.0110.50.50.040.020.2

           FeSi75AI1.5-b72.0-80.01.510.50.50.040.020.2

           Ferrosilicon is widely used in steel industry, foundry industry and other industrial production.

          Ferrosilicon is an indispensable deoxidizer in the steelmaking industry. In the torch, ferrosilicon is used for precipitation deoxidation and diffusion deoxidation. Brick iron is also used as a cement for steelmaking. The addition of a certain amount of silicon in the steel can significantly improve the strength, hardness and elasticity of the steel, improve the permeability of the steel and reduce the hysteresis loss of the transformer steel. 0.30% to 1.80% silicon in silicon and 0.40% to 2.80% of silicon steel in spring steel, and the content of silicon in the steel is 0.40% ~ 1.75% Silicon 3.40% ~ 4.00%, heat-resistant steel containing 1.00% to 3.00% silicon, silicon steel containing 2% to 3% or more.

          High silicon ferrosilicon or siliceous alloys are used in the ferroalloy industry as reducing agents for the production of low carbon ferroalloys. Ferrosilicon can be added to cast iron for nodular cast iron inoculants, and can prevent the formation of carbides, promote the precipitation of graphite and spheroidization, improve the performance of cast iron.

          In addition, ferrosilicon powder in the mineral processing industry can be used as a suspension phase, in the electrode manufacturing industry for the electrode coating; high silicon ferrosilicon in the electrical industry can be used to prepare semiconductor pure silicon, in the chemical industry can be used to manufacture silicone and so on. In the steel industry, each production of one ton of steel consumption is about 3 ~ 5kg 75% ferrosilicon.