The recarburizer is becoming more and more popular now, mainly because of its low price, good quality and wide application. At present, various recarburizer products on the ferroalloy market are dazzling. Therefore, as a purchasing manufacturer, it is necessary to understand what elements are contained in the recarburizer in order to better select the appropriate recarburizer products and make better use of the recarburizer.
During the smelting process, due to improper materials or preparations, excessive decarburization and other reasons, the carbon content of steel sometimes does not meet the requirements of normal standards, so it is necessary to add carbon to the steel. Commonly used recarburizers include recarburizing pig iron, electrode powder, petroleum charcoal powder, charcoal powder, and coke powder. When smelting medium and high-carbon steel in a converter, petroleum coke recarburizers with less impurities are used. The requirements of the recarburizer for top-blowing steelmaking are high fixed carbon, low ash, volatile, sulfur, phosphorus, nitrogen and other impurities, dry, clean, and moderate particle size.
The particle size is too fine, easy to burn, too thick, floating on the surface of the precipitation, not easily absorbed by the precipitation. High-carbon steel requires low nitrogen, with a grain size of 0.5-5mm and so on. It needs to be judged and selected according to the specific situation of the specific furnace type smelting workpiece.