ferrosilicon

Ferrosilicon is an essential deoxidizer in the steelmaking industry. In steelmaking, ferrosilicon is used for precipitation deoxidation and diffusion deoxidation. Brick iron is also used as an alloying agent in steel making. Used as an inoculant and spheroidizing agent in the cast iron industry. In the production of ductile iron, ferrosilicon is an important inoculant (helping to precipitate graphite) and spheroidizing agent. Used as a reducing agent in the production of ferroalloys. Not only is the chemical affinity between silicon and oxygen high, but the high silicon ferrosilicon has a very low carbon content. Therefore, high silicon ferrosilicon (or siliceous alloy) is a commonly used reducing agent in the production of low carbon iron alloys in the iron alloy industry. Specifications: Particle size: 0-1mm, 1-3mm, 3-10mm, 10-50mm, 50-100mm or custom.

(1) Used as a deoxidizer and alloying agent in the steelmaking industry. In order to obtain qualified steel and ensure the quality of steel, deoxidation must be carried out in the final stage of steelmaking. The chemical affinity between silicon and oxygen is very high. Therefore, ferrosilicon is a strong deoxidizer for steelmaking for precipitation and diffusion. Deoxidation. Adding a certain amount of silicon to the steel can significantly improve the strength, hardness and elasticity of the steel, thus smelting the structural steel (containing 40.40% to 75%) and tool steel (including SiO.30-1). 8%), spring steel (including SiO. 40-2.8%) and silicon steel for transformers (containing silicon 2. 81-4.8%), also use ferrosilicon as an alloying agent. In addition, in the steel-making industry, the use of ferrosilicon powder at high temperatures can release a large amount of heat, which is often used as a heating agent for steel ingot caps to improve the quality and recovery of ingots.

(2) Used as an inoculant and spheroidizing agent in the cast iron industry. Cast iron is an important metal material in modern industry. It is cheaper than steel, easy to melt and smelt, has excellent casting properties and much better seismic performance than steel, especially ductile iron, its mechanical properties are close to or close to steel. Mechanical behavior. Adding a certain amount of ferrosilicon to cast iron can prevent the formation of carbides in iron and 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 the chemical affinity between silicon and oxygen high, but the high silicon ferrosilicon has a very low carbon content. Therefore, high silicon ferrosilicon (or siliceous alloy) is a commonly used reducing agent in the production of low carbon iron alloys in the iron alloy industry.

(4) Use in other areas. The finely ground or atomized ferrosilicon powder can be used as a suspension phase in the beneficiation industry. It can be used as a coating for welding rods in the electrode manufacturing industry. High silicon ferrosilicon can be used in the chemical industry to manufacture products such as silicones.

Among these applications, the steelmaking industry, the foundry industry and the ferroalloy industry are large users of ferrosilicon. They consume more than 90% of ferrosilicon. Among the various grades of ferrosilicon, the most widely used is 75% ferrosilicon. In the steelmaking industry, approximately 3-5 kg ​​of 75% ferrosilicon is consumed for every 1 t of steel produced. Ferrosilicon is widely used in the steel industry, foundry industry and other industrial production.

Ferrosilicon is an essential deoxidizer in the steelmaking industry. In torch steel, ferrosilicon is used for precipitation deoxidation and diffusion deoxidation. Brick iron is also used as an alloying agent in steel making. Adding a certain amount of silicon to the steel can significantly improve the strength, hardness and elasticity of the steel, increase the magnetic permeability of the steel, and reduce the hysteresis loss of the transformer steel. Generally, steel contains 0.15%-0.35% silicon, structural steel contains 0.40%-1.75% silicon, tool steel contains 0.30%~1.80% silicon, and spring steel contains 0.40%~2.80% silicon. It is contained in stainless steel. Silicon is 3.40% to 4.00%, heat-resistant steel contains 1.00% to 3.00% of silicon, and silicon steel contains 2% to 3% or more of silicon.

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

In addition, ferrosilicon powder can be used as a suspension phase in the beneficiation industry, as a coating for welding rods in the electrode manufacturing industry; high silicon ferrosilicon can be used in the electrical industry to prepare semiconductor pure silicon, and in the chemical industry, it can be used to manufacture silicone. In the steelmaking industry, about 3 to 5 kg of 75% ferrosilicon is consumed for every ton of steel produced.