9th International Conference on Modeling and Simulation of Metallurgical Processes in Steelmaking - STEELSIM2021

The burden distribution in the blast furnace has a major impact on the process and its stability. The iron bearing burden consists normally of several components, such as sinter, pellets, lump ore, silica addition and nut coke. Therefore, the exact composition at discrete positions and times in the blast furnace is of great interest. While the charging via a rotating chute is well investigated...

Injecting pulverized coal into the raceway zone of blast furnaces is a stat of the art process to optimize the operation of the furnace. Modeling the thermo chemical conversion of pulverized coal in the raceway zone is commonly used to investigate its effect on the blast furnace process or to optimize the coal injection process. The quality and accurateness of the employed models determine the...

The Direct Reduction (DR) of iron ore pellets with syngas or hydrogen is a promising technology to reduce the emission of iron making. The conversion rate of singe pellets to iron has been extensively investigated. A shrinking core model is commonly employed to reproduce the experimental observations.
Though, this model presents an inherent bias by assuming a sharp separation between a fully...

The thermo-chemical conversion of coke and reduction of iron ore particles both depend on mass transport from the bulk fluid phase towards the reactive sites in the solid phase. Pore diffusion limits this mass transport in porous particles at intermediate temperatures, while chemistry is limiting co
nversion rates at low temperatures. Besides temperature, pore diffusion rates also depend on...

Lowering emissions of pollutants and carbon consumption has become increasingly imperative in our society nowadays. The worldwide growing restrictions of waste gas emissions on integrated steelworks are the focal motivation of this work. The sintering process is a highly energy-intensive, and a vast material-consuming process unit in the hot metal production. Iron ore sintering depends on the...