Steel slag mainly arises from the oxidation of elements included in the molten iron and scrap; metal impurities; the slag agent like limestone, fluorite, silica, and also oxidants, desulfurization products and also the erosion of lining materials.
The principle pieces of steel slag are calcium, iron, silicon, magnesium, aluminum, manganese and phosphorus oxides. The key standby time with the slag are as follow. First, it is usually rather than lime like a solvent to go back the blast furnace or sintering furnace within the company itself. It is also utilized for roadbed, railway embankment, so when 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 now we will get about four high-quality and also value-added products through the technique of crushing and screening, vacuum ball milling, dry magnetic separation and classification processes of wind. The 4 products are respectively high-quality steel scrap, high-grade iron powder, steel slag powder used as cement, the steel slag aggregate used as asphalt concrete surface layer within the road. After completion of the whole production process, slag can be achieved zero emissions, and the environment pollution in the slag is totally solved.
Many engineering machinery companies are experts in producing ultra-fine grinding and screening equipment for steel slag processing. As an illustration, the eu version jaw crusher, hydraulic cone crusher, Symons cone crusher, impact crusher, LM vertical milling machines as well as other equipments. In China, one company has built an effective steel slag crushing magnetic line which could handle A million tons of slag. To get the targets of having all of the slag processed, recycling, circular economy, emissions-reduction, another company invested 8 million yuan (about $123,0000) with a steel slag crushing magnetic line. And they purchased jaw crusher, cone crusher and Symons cone crusher from engineering machinery company. New production line was created and installed by them.