Steel mill boiler iron slag What is it?

Steel slag is mainly from the oxides formed after oxidation of the elements contained in the iron and steel scrap, impurities brought in by the metal charge, slagging agents such as limestone, fluorite, silica, etc., as well as oxidizing agents, desulphurization products and furnace lining materials that have been eroded. The main components of steel slag is composed of calcium, iron, silicon, magnesium, aluminum, manganese, phosphorus and other oxides. China's steel slag is mainly utilized in the steel company's internal recycling, instead of lime as a solvent, return to the blast furnace or sintering furnace as raw materials for ironmaking, but also can be used for highway roadbed, railroad beds, and as a raw material for cement, soil improvement and so on. The treatment process of steel slag mainly includes cold discard method, hot splash method, disk splash water-cooled method and steel slag water quenching method. Can be used as metallurgical raw materials: as a sintering solvent, as a blast furnace or iron furnace solvent, as a return slag for steelmaking, the use of magnetic separation process to recover scrap iron. Can be used as building materials: because steel slag contains and cement similar to the tricalcium silicate, dicalcium silicate and ferroaluminate and other active minerals, with water-hardening cementitious, so it can be used as a raw material for the production of clinker-free or clinker-poor cement and mixing agent, while steel slag crushed stone has a high density, high strength, surface roughness, good stability, good abrasion and durability, and asphalt combination of solid and so on, thus it is widely used in railroads, highways, and engineering backfill, especially suitable for the use of magnetic separation process to recover scrap iron. Therefore, it is widely used in railroads, highways and engineering backfill, especially suitable for marsh and beach road construction. Can be used in agriculture: used as steel slag phosphate fertilizer, steel slag contains trace elements such as zinc, manganese, iron, copper, etc., the lack of this trace element of different soils and different crops, but also different degrees of fertilizer effect at the same time. Used as silicon fertilizer