Ferrosilicon plays an important role as a common inoculant in the steelmaking industry. Generally, the models of ferrosilicon include ferrosilicon 65, ferrosilicon 79, ferrosilicon 72 and ferrosilicon 75.
There are also some ferrosilicon with low aluminum content(Al:0.1Max) . This article mainly introduces the uses and advantages of low-aluminum ferrosilicon produced by Zhenxin Metallurgy, as well as the current situation of China’s ferrosilicon market.
Specifications of low Al ferrosilicon produced by Zhenxin Metallurgy
| Grade | Chemical Content | ||||
| Si(Max)) | Al(Max) | C(Max) | S(Max) | P(Max) | |
| FeSi75 | 75% | 0.1% | 0.2 | 0.04 | 0.02 |
Common ferrosilicon specifications of Zhenxin Metallurgy
| Ferro silicon code | Chemical composition(%) | |||||
| Si | Mn | Cr | C | P | S | |
| FeSi75A | 74.0-80.0 | ≤0.4 | ≤0.3 | ≤0.1 | ≤0.035 | ≤0.02 |
| FeSi75B | 72.0-80.0 | ≤0.4 | ≤0.3 | ≤0.1 | ≤0.04 | ≤0.02 |
| FeSi75C | 70.0-80.0 | ≤0.5 | ≤0.5 | ≤0.2 | ≤0.04 | ≤0.02 |
| FeSi65 | 65.0-72.0 | ≤0.6 | ≤0.5 | ≤0.2 | ≤0.04 | ≤0.02 |
Particle size supported by low aluminum ferrosilicon
- Ferrosilicon lump
- Ferrosilicon Powder
- Ferrosilicon particles
Applications of low aluminum ferrosilicon
Steelmaking field
Deoxidizer: During the steelmaking process, oxygen will be dissolved in the molten steel, affecting the quality of the steel. Low-aluminum ferrosilicon can react with oxygen in molten steel to generate stable oxides such as silicon dioxide, effectively reducing the oxygen content in molten steel. Due to the low aluminum content, excessive deoxidation of molten steel caused by excessive aluminum content can be avoided, which helps to accurately control the composition and quality of steel and produce high-quality various types of steel, such as construction steel, machinery manufacturing steel, etc. .
Alloying agent: Silicon is an important alloying element in steel. Low aluminum ferrosilicon can add silicon element to steel to improve its strength, hardness, toughness and wear resistance. When manufacturing high-strength alloy steel and spring steel, adding an appropriate amount of low-aluminum ferrosilicon can optimize the performance of the steel and meet the performance requirements of steel in different industrial fields.
Foundry industry
Inoculant: Low aluminum ferrosilicon can be used as an inoculant during the casting process. It can refine the grain structure of castings, significantly improve the mechanical properties of castings, reduce internal defects of castings, such as pores, shrinkage, etc., and improve the quality and yield of castings. Commonly used for casting various mechanical parts, automobile parts, pipe fittings, etc.
Additives to spheroidizing agents: In the production of ductile iron, low aluminum ferrosilicon can be used as an additive to spheroidizing agents. It helps to spheroidize graphite, change the shape of graphite in cast iron from flake to spherical, and improve the mechanical properties of cast iron, especially toughness and ductility, thereby manufacturing high-quality ductile iron products, such as ductile iron pipes and automobile wheels. wait.
Other uses
Ferroalloy production: Low-aluminum ferrosilicon can be used as raw material for the production of other ferroalloys and used to manufacture special ferroalloys with lower silicon and aluminum content to meet the needs of specific industries for ferroalloys with special properties.
Non-ferrous metal industry: In the production of non-ferrous metals (such as aluminum and magnesium alloys), low-aluminum ferrosilicon can be used as an additive to improve certain properties of the alloy, such as improving the high-temperature strength and creep resistance of aluminum alloys.
Price analysis of low aluminum ferrosilicon in the Chinese market
As an alloy with lower aluminum content, the price of low aluminum ferrosilicon is much higher than that of general specifications of ferrosilicon. Of course, it is also specific needs that will require low aluminum ferrosilicon.
The market resumed at the beginning of the week. Ferrosilicon futures opened higher and then adjusted downward slightly. The factory quoted prices in the morning were 72#6000-6200, 75#6700-6800, and 65#5700-5800 yuan/ton in cash. Natural blocks are shipped from the factory. The low prices are mostly from Shaanxi bulk. The source of goods and the listed price are naturally Ningxia 01-280/300 and Qinghai 01-300/350. After the futures market rose last Friday, there was no price advantage for receiving goods at the market price. Some factory quotations moved up slightly following the market. However, some factories did not adjust prices temporarily due to inventory pressure, and mainly shipped shipments and reduced inventory.