LAUSR

Steel scrap is an indispensable raw material in the steel industry, and it is a renewable resource that can be recycled indefinitely. With the Chinese government vigorously advocating low-carbon and green development, the electric arc furnace (EAF) steelmaking process with steel scrap as the main raw material has been valued.1) In addition, the Chinese government has vigorously cracked down on substandard steel and promoted the industrialization of steel scrap resources, thereby further promoting the development of EAF steelmaking.2) However, the melting rate of steel scrap is one of the important influencing factors for EAF to improve production efficiency and reduce energy consumption. It is reported that the energy consumed by heating and melting of steel scrap accounts for about 60 pct of the total energy, and more than 50 pct of the time requirement for one heat is used for scrap melting.3,4) The EAF steelmaking has generally adopted large “hot heel” and flat bath operation, which utilized the liquid steel left in the bottom of the furnace to heat and melt the fresh steel scrap. Therefore, several studies have been carried out to investigate the melting of steel bar in the liquid steel Melting Characteristics of Multipiece Steel Scrap in Liquid Steel