Products Description
Ferrosilicon powder is a powdery substance made of an ferro alloy composed of iron and silicon. 0-5mm means that its size is between 0 and 5 mm.
Production process
1,Raw material preparation: Iron ore, silica and coal are mixed in a certain proportion to provide the required materials for subsequent reactions.
2,High-temperature reduction and alloy smelting: In an electric arc furnace or a submerged arc furnace, the gas produced by the combustion of coal reduces the iron oxide in the iron ore to iron, and silica reacts with carbon monoxide to form silicon. Iron and silicon gradually melt to form liquid ferrosilicon alloy, and are kept in the furnace for a period of time to ensure uniform composition.
3,Cooling after leaving the furnace: The molten ferrosilicon alloy is poured out and cooled to form ferrosilicon ingots.
4,Crushing, grinding and screening: After the ferrosilicon ingots are crushed by a crusher and ground by a grinder, ferrosilicon powder with a size of 0-5mm is obtained by screening.
Chemical Composition
Grade |
Chemical Composition(mass fraction)% | |||||||
| Si | Al | Ca | Mn | Cr | P | S | C | |
|
≥ |
≤ | |||||||
| FeSi90Al1.5 | 87.0~95.0 | 1.5 | 1.5 | 0.4 | 0.2 | 0.04 | 0.02 | 0.2 |
| FeSi9oAl3.0 | 87.0~95.0 | 3 | 1.5 | 0.4 | 0.2 | 0.04 | 0.02 | 0.2 |
| FeSi75Al0.5-A | 74.0~80.0 | 0.5 | 1 | 0.4 | I0.3 | 0.035 | 0.02 | 0.1 |
| FeSi75Al0.5-B | 72.0~80.0 | 0.5 | 1 | 0.5 | 0.5 | 0.04 | 0.02 | 0.2 |
| FeSi75Al1.0-A | 74.0~80.0 | 1 | 1 | 0.4 | 0.3 | 0.035 | 0.02 | 0.1 |
| FeSi75Al1.0-B | 72.0~80.0 | 1 | 1 | 0.5 | 0.5 | 0.04 | 0.02 | 0.2 |
| FeSi75Al1.5-A | 74.0-80.0 | 1.5 | 1 | 0.4 | 0.3 | 0.035 | 0.02 | 0.1 |
| FeSi75Al1.5-B | 72.0~80.0 | 1.5 | 1 | 0.5 | 0.5 | 0.04 | 0.02 | 0.2 |
| FeSi75Al2.0-A | 74.0~80.0 | 2 | 1 | 0.4 | 0.3 | 0.035 | 0.02 | 0.1 |
| FeSi75Al2.0-B | 72.0~80.0 | 2 | 0.5 | 0.5 | 0.04 | 0.02 | 0.2 | |
| FeSi75-A | 74.0~80.0 | 0.4 | 0.3 | 0.035 | 0.02 | 0.1 | ||
| FeSi75-B | 72.0~80.0 | 0.5 | 0.5 | 0.04 | 0.02 | 0.2 | ||
| FeSi65 | 65.0~72.0 | 0.6 | 0.5 | 0.04 | 0.02 |
|
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Products Uses
Steelmaking industry:
It is a commonly used deoxidizer. Silicon has a high chemical affinity with oxygen and can be used for precipitation and diffusion deoxidation. It is also an alloying agent. When smelting structural steel, tool steel, spring steel and silicon steel for transformers, adding silicon can improve the strength, hardness, elasticity and other properties of steel.
Cast iron industry:
It is used as an inoculant and spheroidizer to prevent the formation of carbides in iron, promote the precipitation and spheroidization of graphite, and improve the performance of cast iron.
Ferroalloy production:
High-silicon ferrosilicon powder has a low carbon content and is a commonly used reducing agent in the production of low-carbon ferroalloys.
Other aspects:
Ground or atomized FeSi powder can be used as a suspension phase in the mineral processing industry and as a coating for welding rods in the welding rod manufacturing industry. High-silicon ferrosilicon can be used to manufacture silicone and other products in the chemical industry.
Products Features
High reaction efficiency:
The size range of 0-5mm gives ferrosilicon powder a larger specific surface area, which can better contact with molten steel or other substances, and can improve the efficiency of reactions such as deoxidation and alloying, so as to more effectively play its role in steelmaking, cast iron and other processes.
Good uniformity:
The size of ferrosilicon powder within this size range is relatively uniform. When added to the molten metal, it can be more evenly distributed, which is conducive to ensuring the consistency of the performance of the metal material.
Advantages of 0–5 mm Size
High Reaction Efficiency:
Large surface area and rapid diffusion enable faster and more uniform deoxidation and alloying, resulting in stable yields.
Precise Feeding:
Uniform size facilitates precise weighing and conveying, making it suitable for automated feeding systems and reducing dust and waste.
Wide Applicability:
Optimizing both "fine powder melting" and "coarse size resistance" allows for a wide range of steelmaking and casting process windows.
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