Abstract
ThyssenKrupp Steel AG has developed a numerical model to study the combustion of coal particles which are fed into the blast furnace through the tuyeres. The basic aim is to evaluate various coal lance / tuyere configurations and assess their advantages or drawbacks for successful operation. In the ULCOS project, this model was used to check the feasibility of some tuyere configurations for the Top Gas Recycling Blast Furnace process, which is especially challenging regarding tuyere design, combustion kinetics and raceway size.
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