Ferro silicon is a ferroalloy composed of iron and silicon. Ferrosilicon is a ferrosilicon alloy made of coke, steel chips, quartz (or silica) as raw materials and smelted in an electric furnace. As silicon and oxygen are easy to synthesize silicon dioxide, ferrosilicon is often used as deoxidizer in steelmaking. At the same time, since a large amount of heat is released when SiO2 is generated, it is also beneficial to increase the temperature of molten steel while deoxidizing. At the same time, ferrosilicon can also be used as an alloying element additive, which is widely used in low alloy structural steel, spring steel, bearing steel, heat-resistant steel and electrical silicon steel. Ferrosilicon is commonly used as a reducing agent in ferroalloy production and chemical industry.
Ferro silicon specification:
|
Si |
72% Min |
75% Min |
|
P |
0.04% |
0.04% |
|
C |
0.2% |
0.2% |
|
S |
0.02% |
0.02% |
|
Al |
2.0% |
2.0% |
Ferrosilicon is made of coke, steel chips, quartz (or silica) as raw materials by electric furnace smelting. In traditional smelting of ferrosilicon, silicon is reduced from silica containing SiO2. Metallurgical coke is mostly used as reductant in smelting ferrosilicon, and steel chips are the regulator of ferrosilicon.
Raw materials and electric energy consumption for producing one ton of ferrosilicon are:
Silica: 1780-1850kg
Coke: 890-930kg
Steel chips: 220-230kg
Electrode paste: 45-55kg
Power consumption: 8400-9000kwh/t
