menu
Ferrosilicon is a common additive in steel smelting. It has a good deoxidation effect during steel smelting. This is because ferrosilicon reacts with oxygen in the molten steel to form silicon dioxide, which floats on the surface of the molten steel. Good deoxidation effect. The choice of ferrosilicon raw materials also has a great impact on the quality of ferrosilicon. In order to deepen everyone's understanding, we follow the ferrosilicon manufacturers to see how to choose ferrosilicon raw materials.
The main use of ferrosilicon is as a deoxidizer and alloy for steelmaking. Phosphorus osmium P﹚ and sulphur ﹙S 極大 are impurities that have a great impact on the quality of steel. When ferrosilicon contains a lot of phosphorus, ferrosilicon is easily pulverized. Therefore, low phosphorus and sulfur content is required. Phosphorus exists in silica in the state of phosphorus pentoxide﹚ P2O5﹚. Most of the phosphorus pentoxide is reduced by carbon into ferrosilicon during smelting. Therefore, it is required that the phosphorus pentoxide in the silica is not more than 0.02%.
The sulfur content of silica is due to the formation of silicon sulfide by sulfur sulphide and silicon selenium Si during the smelting process, such as SiS, SiS2 and other compounds. These compounds are volatile and run away at high temperatures, so the sulfur content of silica is not required.
The content of calcium oxide ﹙CaO﹚ and magnesium oxide ﹙MgO﹚ in silica is relatively high, which will increase the amount of slag during smelting and erode the iron port. Therefore, the sum of the content of calcium oxide and magnesium oxide in silica is less than 1%.
The selection principle of ferrosilicon raw materials is that they contain less impurities. If the content of impurities is too high, it will easily cause excessive impurities to penetrate into the molten steel in practical applications, thereby affecting the quality of steel. As a ferrosilicon manufacturer, Wanfeng Industrial supplies a wide range of ferrosilicon types and types, such as ferrosilicon powder and ferrosilicon blocks. It can produce different ferrosilicon according to your needs.
