What Kind Of Steel Is Suitable For Smelting Ferrosilicon

Iron in ferrosilicon comes from steel scraps in the charge. According to the quality requirements of ferrosilicon, only waste carbon steel is allowed to be used in smelting, and waste alloy steel such as stainless steel with high chromium content, high manganese steel with high manganese content, etc., cannot be used. Therefore, the use of waste alloy steel to smelt ferrosilicon will lead to the generation of waste. Cast iron sawdust also cannot be used due to its high phosphorus content. Waste non-ferrous metals, such as copper and aluminum, cannot be used to smelt ferrosilicon. Therefore, in order to ensure the quality of ferrosilicon, only steel waste made of ordinary carbon steel is allowed to be used in smelting.

Heavily rusted steel waste cannot be used, as it contains a lot of impurities and the iron content is difficult to control during smelting. At the same time, heavily rusted steel waste has low strength and a large amount of powder, which affects the air permeability of the surface of the material when added to the furnace. Therefore, it is necessary that the iron content in the steel scraps used is more than 95% and the surface is clean, without obvious contamination.

The length of the steel scraps should not be too long to prevent uneven mixing and clogging of the feed pipe. Steel trimmings that are too long will also result in uneven charge loading and affect unbalanced three-phase loading. For this reason, it is advisable to provide that the length of steel scraps should not exceed 100 mm.