engleski

Three-dimensional mathematical model of fusion of steel scrap in the converter melt

Three-dimensional mathematical model of fusion of cubical steel scrap in converter melt was developed. The model was solved using modified implicit Brian`s method. The obtained algorithm was programmed in ASCII FORTRAN for the computer SPERRY 1106. In the model temperature dependent thermophysical properties of material were incorporated. That gives to the model a nonlinearity. On the basis of the model it was concluded that addition of 1% of low-carbon steel scrap decreases the temperature of a middle carbon steel melt for cca 23 °C. This is in good agreement with experimental data from literature. At the same time a new formula for the fusion time of steel scrap was developed, which enables to calculate the fusion time on basis of the volume of the steel scrap in the converter melt.

mathematical model; fusion; steel scrap; converter

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