Ferrous Slag
Ferrous Slag
Iron and steel slag encompasses both blast furnace slag and steelmaking slag, which are the main types of slag produced during the iron and steel production processes.
Blast Furnace Slag
This type of slag is generated during the reduction of iron ore in a blast furnace. It consists of silica and other non-ferrous components of iron ore, ash from coke used as a reducing material, and limestone auxiliary material. Blast furnace slag rises above the molten pig iron due to its lower specific gravity, allowing it to be easily separated and recovered.
Steelmaking Slag
Steelmaking slag is produced during the refining of pig iron into steel. There are two primary types of steelmaking slag: a. Converter Slag: Generated when lime and other auxiliary materials are added to pig iron, and oxygen is blown onto the surface to remove impurities such as carbon, phosphorous, sulfur, and other components. This process refines the pig iron into high-quality steel.
Electric Arc Furnace (EAF) Slag
Formed during the melting and refining of iron scrap in an electric arc furnace. The impurities in the iron scrap are oxidized and removed, resulting in the formation of EAF slag.
Iron and steel slag can have various applications, including as construction aggregates in road construction and asphalt paving, as raw materials for cement production, as soil conditioners in agriculture, and in the manufacturing of concrete and mineral wool. Recycling and reusing iron and steel slag contribute to waste reduction, resource conservation, and energy savings in industrial processes.
Iron and steel slag products and production process
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