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

Mass transfer between liquid steel and slag is frequently encountered in the steelmaking processes: for composition adjustment such as desulfurization or dephosphorization, but also for lubrication of continuous casting mold, since the slag viscosity has a major effect and is mainly depending on the thermodynamic equilibrium between the phases. To predict the composition of both the slag and...

The behavior of nonmetallic inclusions (NMs) on gas bubble surfaces has received increasing attention due to its importance in clean steel production. Agglomeration of NMs at the gas/steel interface is usually observed because of capillary attractions. The Kralchevsky–Paunov (K-P) model is often employed to calculate this capillary force quantitatively. In the K-P model calculation,...

During slag granulation, after metal separation in the Blast Furnace Main Trough, the contact between water and slag can lead to explosions, due to presence of pig iron in the slag. Aiming to reduce the molten metal passage through the slag port of a main trough in a Brazilian steel mill, in order to avoid explosions during slag granulation, multiphase numerical simulations were performed for...

The formation and removal of exogenous inclusions in a real-size two-strand tundish is simulated by the proposed unsteady 3D comprehensive numerical model of the respective fluid-structure interaction, which takes into account the impacting and washing effects on the refractory wear. A large eddy simulation is employed to describe the molten steel vortex flow. Thus, the thermal profiles of the...

AOD process consists of two main stages: decarburization and reduction of slag. In the decarburization stage, oxygen is injected through nozzles – and also through top lance in combined-blowing vessels – to remove dissolved carbon from the metal bath. The oxygen injection is diluted with nitrogen or argon to avoid excessive oxidation of alloying elements, such as chromium and manganese. After...

Given the sheer volume of resources and energy used in smelters around the world, the optimization potential of simulation and modeling-based efficiency measures is huge.
However, simulations require representative input data in order to work properly. In other words: simulations can only be as good as the data they are built on. In addition to the detailed model the best possible...