Ferrosilicon is used as a deoxidizer and alloying agent in the steelmaking industry. Ferrosilicon is used as an inoculant and spheroidizing agent in the foundry industry. Steelmaking and casting are basic heavy industries, so it is very useful to understand the raw material additives used in the heavy industry. necessary.The following ferroalloy manufacturers will share with you what is ferrosilicon and what is the purpose of ferrosilicon?
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Introduction to Ferrosilicon：
Ferrosilicon is an iron alloy composed of silicon and iron.
Ferrosilicon is a ferrosilicon alloy made from coke, steel scraps, and quartz (or silica) smelted in an electric furnace. It is widely used in steel industry, foundry industry and other industrial production.
Ferrosilicon commonly used grades: 65#, 75A#, 75B#, hard 75# (silicon ≥75%)
The commonly used content is shown in the following table (the conventional statement is that the AL content is less than 2.0):
Uses of ferrosilicon：
Used as deoxidizer and alloying agent in steelmaking industry. In order to obtain steel with qualified chemical composition 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 large. 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. Therefore, it is used 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 transformer silicon steel (containing 2.81-4.8% silicon), ferrosilicon is also used as an alloying agent. At the same time, improving the shape of inclusions and reducing the content of gas elements in molten steel is an effective new technology for improving steel quality, reducing costs, and saving iron. It is especially suitable for the deoxidation requirements of continuous casting molten steel. Practice has proved that ferrosilicon not only meets the deoxidation requirements of steelmaking, but also has desulfurization performance and has the advantages of large specificity and strong penetrating power.
Commonly used state of ferrosilicon: 10-50mm, 50-100mm, (whether there are cracks in the appearance, whether the color is faded by hand, whether the knock is crisp, the thickness of the cross section is off-white, with pores)
Commonly used packaging of ferrosilicon: bulk or ton bag packaging.
Precautions for ferrosilicon: Ferrosilicon is afraid of tides, and the natural blocks are easy to pulverize when exposed to water, and the silicon content will decrease accordingly.
Ferrosilicon is an alloy of iron and silicon.Ferrosilicon is coke, steel chips, quartz (or silica) as raw materials, smelted by electric furnace made of iron silicon alloy.Common uses of ferrosilicon are as follows:
(1) ferrosilicon is an essential deoxidizer in steelmaking industry.In steelmaking, ferrosilicate is used for precipitation deoxidation and diffusion deoxidation.Brick iron is also used as an alloying agent in steelmaking.
(2) Used as inoculant and spheroidizer in cast iron industry.In the production of ductile iron, ferrosilicon is an important inoculant (to help precipitate graphite) and spheroidizer.
(3) used as reducing agent in ferroalloy production.Not only is the chemical affinity between silicon and oxygen great, but the carbon content of high silicon ferrosilicon is very low.Therefore, high silicon ferrosilicon (or siliceous alloy) is a commonly used reducing agent in the production of low carbon ferroalloy in the ferroalloy industry.
(4)75 ferrosilicate in Pijiang magnesium smelting is often used in the high temperature smelting process of magnesium, the magnesium replacement in CaO.MgO, each one ton of magnesium will consume about 1.2 tons of ferrosilicate, which plays a great role in the production of magnesium.
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