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Ferro Silicon FeSi 75 72% Al 2.0%
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Shape: Lump Powder Particles
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Chemical Composition:Si Fe Al Ca Mn Cr P S C
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Size:0~1mm 1~3mm 10mm~50mm 10~60mm 10~100mm .etc
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Package: Ton bag or customized according to customer requirements
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Product Introduction
Silicon is the main element in ferrosilicon. The silicon content in ferrosilicon 72 is not less than 72%, and the silicon content in ferrosilicon 75 is not less than 75%. Silicon plays an important role in steelmaking and casting, and can improve the strength, hardness and elasticity of steel and cast iron. The aluminum content is about 2.0%. A proper amount of aluminum helps to refine the grains and improve the mechanical properties of steel and cast iron, but if the aluminum content is too high, it may cause the melting point of ferrosilicon to decrease, affecting its performance in high temperature environments.
In addition to silicon and aluminum, ferrosilicon may also contain a small amount of other elements, such as phosphorus, sulfur, calcium, manganese, etc. The content of these impurities is usually strictly limited to ensure the quality and performance of ferrosilicon. Generally, the phosphorus content is below 0.04% and the sulfur content is below 0.02%.
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 | |||
Difference in usage cost between ferrosilicon 72 and ferrosilicon 75
Under the same steelmaking conditions, the cost difference between ferrosilicon 72 and ferrosilicon 75 is affected by many factors. The following is a specific analysis:
Raw material cost
1
Difference in purchase price:
Usually, the purchase price of ferrosilicon 75 in the market is higher than that of ferrosilicon 72 due to its higher silicon content and better quality. The price difference will vary according to factors such as market supply and demand, raw material price fluctuations, and regions. For example, when the market supply is relatively sufficient and the demand is stable, the price of ferrosilicon 75 may be several hundred yuan per ton higher than that of ferrosilicon 72; but when the market demand for high-quality ferrosilicon is strong and the supply is tight, This price difference is likely to widen further.
2
Impact of raw material cost proportion:
When steelmaking companies purchase ferrosilicon, the proportion of its cost in the entire steelmaking cost also needs to be considered. If the amount of ferrosilicon is larger, the price difference between ferrosilicon 75 and ferrosilicon 72 will have a more significant impact on the total cost; conversely, if ferrosilicon is just one of many additives in the steelmaking process, the dosage will be relatively If it is less, the impact of the price difference on the total cost will be relatively small.
Differences in usage efficiency and dosage
1
The deoxidation and alloying effects affect the dosage:
Ferrosilicon 75 has a higher silicon content and stronger deoxidation and alloying capabilities. When achieving the same deoxidation and alloying target requirements, the required dosage may be less than that of Ferrosilicon 72. . For example, to reduce the oxygen content of molten steel to a specific standard and increase the silicon content in the steel to the desired level, if you use ferrosilicon 72, you may need to invest more, while ferrosilicon 75, with its higher silicon content and Stronger reactivity, the same effect can be achieved with a relatively smaller amount. From this perspective, although the unit price of ferrosilicon 75 is high, when the dosage is small, the overall cost is not necessarily much higher than that of ferrosilicon 72, and may even be lower, depending on the price difference between the two and the actual use. quantity difference.
2
Process adaptability affects costs:
In some steelmaking processes, there are specific requirements for the reactivity and impurity content of ferrosilicon. If ferrosilicon 75 is more suitable for process needs in these aspects, it can reduce the risk of insufficient reaction and impurity content. In case of additional processing costs, etc., even if its purchase price is high, considering the comprehensive cost of the entire steelmaking process, it may be a better choice; on the contrary, if the process is suitable for ferrosilicon 72 and ferrosilicon 75 The difference is not big, and the cost mainly depends on the balance between purchase price and actual usage.
Market situation
Fesi 72 and fesi 75 are two common ferrosilicon products on the market, and their market demand and prices are affected by many factors. Generally speaking, the price of ferrosilicon 75 is relatively high because it has a higher silicon content and better quality, and is suitable for the production of some special steels and alloys with high silicon content requirements; while the price of ferrosilicon 72 is relatively low, but its market demand is large, and it is widely used in the production of ordinary steel and some fields that do not require particularly strict silicon content.
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