RHI AG (Leoben, Austria)

G. Hackl, Head of Modelling and Simulation, e-mail: gernot.hackl@rhi-ag.com
S. Köhler
W. Fellner
U. Marschall, Dr., Modelling and Simulation, Technology center

RHI AG (Vienna, Austria)
R. Pungersek, Product manafer, Primary metallurgy, BOF
B. Tummer, Dr., Head of Product management, Secondary metallurgy concepts

Steelmaking includes several technological stages, and refractories play an important role in this process. The output hole in a basic oxygen converter and electric arc furnace is formed be refractory lining and has essential influence on the coefficient of equipment utilization. CFD simulation of refractories has been conducted in this paper. Turbulence and pressure distribution in the usual cylindric output channel and in the channel optimized via CFD simulation have been compared. The water model in the scale 1:2.5 has been created for verification of results. Ananlysis of different lining concepts was necessary meaning achievement of higher productivity, lowering of specific expenses for refractories and technical maintenance. Inert gas blowing in the ladle is aimed on temperature equalizing and homogeneity of absorption of alloying components added in the melt. Usage of the methods of physical and numerical simulation are considered as the important methods for examination of properties of refractories in steelmaking practice.

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