The primary raw materials for producing ferro silicon are:
Silica (SiO2): Silica is usually sourced from quartz sand, flint, or other forms of silicon dioxide. It serves as the main source of silicon in the ferro silicon production process.
Iron Source: The iron in ferro silicon typically comes from scrap iron or iron ores such as haematite (Fe2O3) or magnetite (Fe3O4). Scrap iron is often preferred due to its availability and cost-effectiveness in many cases.
Carbon Source: Carbon is used as a reducing agent in the production of ferro silicon. This can come from materials like coke, coal, or charcoal. The carbon reacts with the silica to facilitate the reduction process, producing silicon and carbon monoxide gas.
Fluxing Agents (optional): Sometimes, fluxing agents like lime (CaO) or other materials may be added to help remove impurities and improve the efficiency of the process.
