What is ferrosilicon? What is the use of ...

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.

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The above is what hensfate shared for you about the use of ferrosilicon, I hope it can be helpful to you&#;

Topics Covered

Introduction
Chemical Composition
Physical Properties
Applications

Introduction

Ferrosilicon is a ferroalloy - an alloy of iron and silicon. Its CAS number is -17-0. The average silicon content varies between 15 and 90 wt%. It contains a high proportion of iron silicides. Ferrosilicon is produced by reduction of silica or sand with coke in presence of iron.

Ferrosilicon is known to possess good resistance to abrasion, good resistance to corrosion, high specific gravity, and high magnetism, which allows easy magnetic recovery. The melting point and density of ferrosilicon depends on its silicon content and it is available at a low cost.

The following sections will discuss the various properties of ferrosilicon in detail.

Chemical Composition

The following table shows the chemical composition of Elkem FeSi low Al ferrosilicon.

Element Content (%) Silicon, Si 74 - 78 Iron, Fe &#; 21.32 Aluminum, Al &#; 0.50 Carbon, C &#; 0.050 Sulfur, S &#; 0. Phosphorous, P &#; 0.020

Physical Properties

The following table discusses the physical properties of ferrosilicon.

Properties Metric Imperial Density 3.20 g/cm3 0.116 lb/in3 Melting point -°C -°F Boiling point °C °F

Applications

The following are the common application areas of ferrosilicon:

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• As a source of silicon to reduce metals from their oxides and to deoxidize steel and other ferrous alloys
• Manufacture of other ferroalloys
• Manufacture of silicon, corrosion-resistant and high-temperature resistant ferrous silicon alloys, and silicon steel for electromotors and transformer cores
• Manufacture of cast iron, ferrosilicon is used for inoculation of the iron to accelerate graphitization
• Manufacture of prealloys like magnesium ferrosilicon, used for modification of melted malleable iron.
• As an additive to cast irons for controlling the initial content of silicon
• In steel melting, casting, mineral processing and melting rod industry
• Used in the Pidgeon process to make magnesium from dolomite
• For heavy media separation and atomization
• Used in casting, melting and related metallurgy industry
• For production of semiconductor pure silicon in electric industry and silicon copper in chemistry industry