Therefore, no more than 1% alumina is required in silicon dioxide. The initial grain of ferrosilicon powder is fine, resulting in the initial reaction being too drastic, the specimen is overburned, resulting in incomplete nitride, but the nititride effect is better than that of coarse ferrosilicon powder. For coarse ferro silicon powder, the nitrogen seepage effect can be achieved by extending the insulation time appropriately. However, with the extension of the heat keeping time, the nitrogen seepage effect of fine ferro silicon powder is not as obvious as that of coarse ferrosilicon powder.
Alumina is commonly found in silicon dioxide topsoil. Therefore, silicon should be cleaned with water before being placed in the furnace to reduce the amount of slag in the smelting process. ferrosilicon manufacturers point out that ferro silicon is mainly used as a deoxygenator and alloy for steelmaking. Phosphorus (P) and sulfur (S) are impurities that have a significant impact on the quality of steel. Phosphorus is in the state of silicon phosphorus, and most of it is reduced to ferrosiliocon during smelting.
Therefore, the content of phosphorus and sulfur is very low. Due to the appearance of sulfur (S) and the appearance of silicon (Si) in the smelting process to form silicon sulfide, such as SiS, SiS2 and other compounds, the demand for silica phosphorus pentoxide does not exceed 0.02%. The sulfur content of silicon, these compounds are volatile at high temperatures, so the sulfur content of silicon is not required. Calcium oxide (calcium oxide) and magnesium oxide (magnesium oxide) in silicon dioxide content is high, smelting will increase the amount of slag, and erode the iron mouth, which requires the content of calcium oxide and magnesium oxide in silicon dioxide less than 1%.
The above content is the silicon manganese powder manufacturer for you to introduce the silicon stone requirements suitable for smelting ferrosilicon, but also according to the choice of ferrosilicon furnace to decide. The slag steel interface is diffused deoxygenation, and the ferrosilicon plant makes the deoxygenation product smelt not easily pollute the steel liquid and reduce the content of the inclusions in the steel. The higher the content of silicon in ferrosilicon, the lighter it is. 15. ferrosilicon contains 75 per cent silicon, a ratio of 3. 5. The ferrosilicon powder rolled by silicon iron is heavier. After addition, quickly into the steel liquid, precipitation deoxygenation, increase the content of silicon in the steel liquid.
The ferrosilicon powder made from high silicon iron is lighter, which is conducive to diffusion deoxygenation, and its high silicon content, the deoxygenation effect is strong, so it is generally rolled with high ferrosilicon.
Star metallurgy is a high-quality manufacturer of ferrosilicon, the main ferro silicon block 65, 70, 72, 75. ferrosilicon powder,ferrosilicon grain. Welcome to the consultation.
.jpg)
