Ferro Silicon
ZhenAn is a corporation that integrates production, processing, sales, import, and export operations. Covering a 30,000 square meter footprint, it produces and sells more than 150,000 tonnes of goods annually, and is equipped with all the latest production tools. With thirty years of expertise, we are a top producer and supplier of metallurgical raw materials, dedicated to providing high-quality Ferro Alloys, Silicon Metal and Silicon Metal Powders, Ferro Silicon,Ferro Vanadium, Ferro Titanium, and other items. We always provide products with good quality and low price.
Why Choose Us
Professional Team
We have 26 senior technical engineers who have many years of experience in metallurgy production and application and can provide customized solutions for different customer needs. Our sales team is familiar with industry dynamics and market trends and can provide customers with professional advice and support.
High Quality
With a deep understanding of the metallurgical sector, our team is adept at handling every aspect of production and quality control. Our quality inspectors strictly control the quality of each link to ensure that each batch of products meets international standards.
Advanced Equipment
We Have 4 sets of production lines for ferroalloy of 20,000 TPY; 4 sets of production lines for Alloy cored wire of 30,000 TPY; 6 sets of vacuum furnaces; and 10+ sets of furnaces for other purposes.
Wide Market
We not only meet the needs of China steel companies but also export our products to 150 countries and regions including Japan, South Korea, India, Europe, and the United States.
Perfect Service
All after-sale requests will be responded to in 24 hours. Close follow-up of all orders by special person and keep customers informed timely. We provide you with quick and warm service throughout the whole process.
Fast Delivery
We have a dedicated and efficient export department that specializes in documentation, packaging, and shipping services to provide reliable services to customers around the world, ensuring timely delivery and on-time shipping to the destination.
What Is Ferro Silicon?
Ferrosilicon is a kind of ferroalloy made by smelting in an electric furnace with coke, steel scraps, and quartz (or silica) as raw materials. Ferrosilicon is classified according to the silicon content, such as FeSi45, FeSi75, FeSi65, etc.
We are a ferro silicon manufacturer & supplier in China, we can provide ferro silicon 45, ferro silicon 65, ferro silicon 70, ferro silicon 72, and ferro silicon 75.
| Grade | ≥ | (Chemical composition)≤ % | ||||||
| Si | Al | Ca | Mn | Cr | P | S | C | |
| FeSi75 | 75 | 1.5 | 1 | 0.5 | 0.5 | 0.04 | 0.02 | 0.2 |
| FeSi72 | 72 | 2 | 1 | 0.5 | 0.5 | 0.04 | 0.02 | 0.2 |
| FeSi70 | 70 | 2 | 1 | 0.6 | 0.5 | 0.04 | 0.02 | 0.2 |
| FeSi65 | 65 | 2 | 1 | 0.8 | 0.5 | 0.04 | 0.02 | 0.2 |
| FeSi45 | 45-47 | 2 | 1 | 0.8 | 0.5 | 0.04 | 0.02 | 0.2 |
| Size | 10-50mm, 0-3mm, 1-3mm, 0-10mm or as your requirement or according to customers' requirements | |||||||
Ferro Silicon Powder
Ferro silicon powder is a powder material ground from ferro silicon. It is a ferrosilicon alloy composed in a certain proportion and plays a very important role in steelmaking. Ferro silicon powder is used as a suspension in the mineral processing industry and can be used as a reducing agent in smelting molybdenum, titanium, tungsten, and other alloys. The specification is generally between 60-200 mesh. Ferro silicon powder can be used as welding rod coating in the welding material industry.
Ferro Silicon Lumps
FeSi Lumps are an essential deoxidizer in the steelmaking industry. In steelmaking, Iron Silicon is used for precipitation and diffusion deoxidation. Brickiron is also used as an alloying agent in steelmaking. Adding a certain amount of silicon to steel can significantly improve the strength, hardness, and elasticity of steel, improve the permeability of steel, and reduce the hysteresis loss of transformer steel.
Ferro Silicon 45
Ferrosilicon 45 is mainly used to adjust the silicon content in steel and as a deoxidizer. In the steelmaking process, the silicon element in ferrosilicon can also alloy steel and improve the performance of steel. Ferrosilicon can also react with the oxygen in the steel to generate silica, thus playing the role of deoxidation, reducing the oxygen content in the steel and improving the purity of steel.
Ferro Silicon 75
Ferrosilicon 75 is an alloy of iron and silicon. It finds extensive applications in steel production, as its addition enhances its properties. Ferrosilicon exhibits high oxidation resistance, increased strength, and improved magnetic properties. It is also used in the production of cast alloys, abrasive materials, and other metallurgical products.
Ferro Silicon 72
Ferro silicon 72 lumps are an iron-silicon alloy made from coke, steel shavings, and should time (or silica), smelted by an electric furnace.
Ferro Silicon 65
Ferro Silicon 65 is a kind of inoculant that promotes graphitizing, reduces the tendency of white mouth, improves the graphite morphology and distribution, and increases the number of eutectic clusters, which has a good effect in a short period of time after the inoculation treatment (about 5-8 minutes).
Physical and Chemical Properties of Ferro Silicon
Appearance
The shape of the ferrosilicon powder particles may be spherical or irregular. Such as block, crush, or grind.
Color
The color of ferro silicon varies between silver grey and dark gray.
Odor
Odorless; dangerous when inhaled.
Specific Gravity
The specific gravity of ferro silicon varies with the ratio of the two chemicals mixed. For FeSi 75, the specific gravity was 3.01.
Flammability
The dust particles of ferro silicon are flammable.
Solubility
Ferro silicon can react with water to form hydrogen.
Boiling Point
The boiling point of this material is 2355 °C.
Molecular Weight
The molecular weight of the alloy was 28.0855 g / mol.
Corrosive
Corrosion resistance and wear resistance.
Density
The density of ferro silicon is different for different proportions of alloy composition.
- The density of FeSi 45 is 5.1 g / cm³.
- The density of FeSi 75 was 2.8 g / cm³.
- The density of FeSi 90 is 2.4 g / cm³.
Melting Point
Ferro silicon has a relatively high melting point compared to other common metals and alloys. The melting point of ferro silicon varies depending on its silicon content. The more the silicon content, the higher the melting point. Generally, the melting point of ferro silicon ranges from 1200°C to 1414°C (2192°F to 2577°F).
- Ferro silicon with a silicon content of 15% to 30% has a melting point of around 1200°C to 1250°C (2192°F to 2282°F).
- Ferro silicon with a silicon content of 50% to 60% has a melting point of around 1300°C to 1350°C (2372°F to 2462°F).
- Ferro silicon with a silicon content of 90% has a melting point of around 1414°C (2577°F).
Factors Affecting the Melting Point of Ferro Silicon
Impurities
The presence of impurities such as sulfur, phosphorus, and carbon can lower the melting point of ferro silicon.
Pressure
High pressure can increase the melting point of ferro silicon.
Silicon Content
The silicon content of ferro silicon has a direct impact on its melting point. The higher the silicon content, the higher the melting point.
Heating Rate
The heating rate also affects the melting point of ferro silicon. A slow heating rate can result in a lower melting point.
- Ferro silicon is an essential deoxidizer in the steelmaking industry. In steelmaking, ferrosilicon is used for precipitation deoxidation and diffusion deoxidation. Brickiron is also used as an alloying agent in steelmaking.
- Used as an inoculant and spheroidizer in cast iron industry. In the production of ductile iron, ferrosilicon is an important inoculant (to help precipitate graphite) and spheroidizer.
- 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 ferro silicon is very low. Therefore, high silicon ferro silicon (or siliceous alloy) is a commonly used reducing agent in the production of low carbon ferroalloy in the ferroalloy industry.
- 75 ferro silicon 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 ferro silicon, which plays a great role in the production of magnesium.
- Ferro silicon products are widely used in Diamond Processing plants, in the dense media separation process. Ferro silicon powders in combined with a liquid base to form a pulp of the desired density. Diamond-bearing material is submerged into the pulp, which will ultimately separate the diamonds from other materials via gravity.
- Ferro silicon is widely used in the metallurgical industry for the processes of atomisation, melting and heavy media separation reactions.
Product Performance
Ferro silicon is a convenient way of adding silicon as an alloying element, to improve various properties of the final steel.
Slag Reduction
In the manufacture of stainless steels, the presence of silicon reduces chromium oxides in the melt, improving the recovery of metallic chromium.
Deoxidation
Ferro silicon provides quick-acting removal of oxygen from the melt, thus avoiding the presence of inclusion-forming oxides and avoiding loss of desirable elements.
Fuel
Some steel mills add ferro silicon to the melt so that it can be burnt off to get heat into the furnace, and so reduce energy costs.
What Is The Difference Between Ferro Silicon And Silicon Metal?
Composition
- Ferro silicon is an alloy of iron and silicon. It typically contains between 15% and 90% silicon and small amounts of other elements such as carbon, phosphorus, and sulfur. The amount of silicon in ferro silicon determines its properties, such as its melting point, density, and hardness. The composition of ferro silicon can vary depending on the specific application it is intended for.
- Silicon metal, on the other hand, is a pure form of silicon. It is produced by heating quartz and carbon in an electric furnace at very high temperatures. The resulting material is a crystalline structure that is nearly 100% silicon. Silicon metal is often used as a raw material for the production of other silicon-based materials such as silicones, silanes, and semiconductors.
Properties
- Ferro silicon is a hard and brittle material that is resistant to corrosion and oxidation. It has a high melting point and density, making it suitable for use in steelmaking, cast iron production, and other industrial applications. Ferro silicon is also a good source of silicon for the production of silicon-based alloys.
- Silicon metal, on the other hand, is a shiny, silver-gray material that is extremely pure and has a high melting point. It is an excellent conductor of heat and electricity and is often used in the production of electronic components such as computer chips, solar cells, and semiconductors. Silicon metal is also used as an alloying agent in the production of aluminum and steel.
Uses
- Ferro silicon is primarily used as an additive in steelmaking and cast iron production. It is added to molten iron to improve its properties such as strength, hardness, and resistance to corrosion. Ferro silicon is also used in the production of other alloys such as silicon manganese, silicon aluminum, and silicon bronze.
- Silicon metal is used in a wide range of applications. Its excellent electrical conductivity makes it a key material in the production of electronic components such as computer chips, solar cells, and semiconductors. Silicon metal is also used in the production of aluminum alloys, which are used in the automotive and aerospace industries. Additionally, it is used as a raw material for the production of silicones, silanes, and other silicon-based materials.
Silicon Content
The heart of ferro silicon lies in its silicon content. The higher the silicon content, the greater the alloy's ability to deoxidize and desulfurize molten steel, enhancing its quality and durability. Opting for ferro silicon with an optimal silicon percentage can significantly impact the final product's performance.
Aluminum and Calcium Content
The presence of aluminum and calcium in ferro silicon can greatly influence its behavior during the steelmaking process. These elements play a crucial role in controlling the alloy's reaction with oxygen and sulfur, ensuring smoother operations and improved steel quality.
Particle Size Distribution
The particle size distribution of ferro silicon particles affects their dissolution rate and reaction kinetics. By selecting ferro silicon with a well-defined particle size distribution, manufacturers can ensure consistent and efficient alloying, leading to uniform steel properties.
Impurity Levels
Impurities might be inevitable, but minimizing their presence is key. Unwanted impurities can adversely affect the alloy's performance, leading to unpredictable outcomes in the steel production process. Opting for ferro silicon with low impurity levels guarantees a smoother and more controlled manufacturing process.
Manufacturer Reputation
Trustworthy sourcing is the backbone of quality assurance. Choosing a reputable ferro silicon manufacturer with a proven track record of producing high-quality alloys is a strategic move. A reliable supplier can provide consistent product quality, technical support, and tailored solutions to meet specific production needs.
Our Factory

150,000+
Annual Production

30000+
Square Meters Built

30+
Years
Our Team
Customer Centered
- We have a dedicated and efficient export department that specializes in documentation, packaging, and shipping services to provide reliable services to customers around the world.
Reputation For Development
1. We offer the most competitive prices.
2. We provide relevant professional product consulting.
3. We are willing to help customers find any potential products and merchandise.
4. You can visit our factory by yourself.


200+ Enterprise Employees
- Our engineers can provide customized solutions for different customers' needs.
- Our sales team can provide professional advice and support to our customers.
- Our quality inspectors ensure that each batch of products meets international standards.
100+ Cooperating Partner
- We not only meet the needs of China steel companies
- But also export our products to 150 countries and regions including Japan, South Korea, India, Europe, and the United States.
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FAQ
Q: How is ferro silicon produced?
Q: What are the specifications and grades of ferro silicon?
Q: Is ferro silicon toxic?
Q: How should you store ferro silicon?
Q: How is ferro silicon used in diamond processing plants?
Q: What is the percentage of silicon in ferro silicon?
Q: What is the composition of ferro silicon slag?
Q: What is ferro silicon?
Q: What is the purpose of ferro silicon?
Q: Is ferro silicon used in semiconductor?
Q: What are the raw materials for ferro silicon production?
Q: Why does the ferro silicon smelting process need stoking?
Q: What are the applications of ferro silicon in the field of environmental protection?
Q: What are the applications of ferro silicon in electrical materials?
Q: Is ferro silicon flammable?

