Steel slag mainly comes from the oxidation of elements contained in the molten iron and scrap; metal impurities; the slag agent such as limestone, fluorite, silica, as well as oxidants, desulfurization products and the erosion of lining materials.
The main components of steel slag are calcium, iron, silicon, magnesium, aluminum, manganese and phosphorus oxides. The main use of the slag are as follow. First, it can be instead of lime as a solvent to return the blast furnace or sintering furnace within the company itself. It can also be used for roadbed, railway embankment, and as cement raw material, soil, etc.
The processing technology of steel slag are cold abandoned law, hot pour method, splashing cold plate method and slag water quenching method. Generally a closed loop production process will be used. And we can receive about four high-quality and high value-added products by the process of crushing and screening, vacuum ball milling, dry magnetic separation and classification processes of wind. The four products are respectively high-quality steel scrap, high-grade iron powder, steel slag powder used as cement, the steel slag aggregate used as asphalt cement surface layer in the road. After completion of the entire production process, slag can be achieved zero emissions, and the environment pollution of the slag is completely solved.
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