Abstract
A mathematical model simulating flow fields was developed and used in a study of the influences of scaffold and coal injection on gas and liquid distributions in the blast furnace. It was found that the peripheral gas flow in the upper part of the furnace would become more pronounced with scaffold formation in the walls of the bosh. It was also revealed that total pressure drop and the central gas flow at the furnace top would increase at high coal injection rates. The simulation mode is useful for acquiring a deeper understanding of the complex phenomena in the blast furnace and for determination of appropriate operational actions under different production conditions.
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