Iron Ore Sintering Process Based on Alternative Gaseous Fuels from Steelworks

Abstract:

This paper deals with the numerical simulation of the new technology of gaseous fuel utilization on the sintering process of iron ore. The proposed methodology is to partially replace the solid fuel(coke breeze) by steelworks gases. A multiphase mathematical model based on transport equations of momentum, energy and chemical species coupled with chemical reaction rates and phase transformations is proposed to analyze the inner process parameters. A base case representing the actual industrial operation of a large sintering machine is used with thermocouples inserted into the sintering bed to record the inner bed temperatures and compare with model predictions in order to obtain model validation and parameters adjustment. Good agreement of the temperature pattern was obtained for the base case and thus, the model was used to predict four cases of fuel gas utilization: a) 2% of the wind boxes inflow from N01-N15 wind boxes of natural gas(NG), b) same condition with coke oven gas(COG), c) same condition with blast furnace gas(BFG) and d) mixture of 50% COG and 50% BFG. The model predictions indicated that for all cases, except only BFG, the sintering zone is enlarged and the solid fuel consumption is decreased about 8kg/t of sinter product. In order to maximize the steelworks gas utilization it is recommended the use of mixture of COG and BFG with optimum inner temperature distribution

• Periodical: Advanced Materials Research (Volumes 535-537)
• Pages: 554-560
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.535-537.554
• Online since: June 2012
• Authors: José Adilson de Castro, Vagner Silva Guilherme, Alexandre Boscaro França, Yasushi Sazaki
• Keywords: COG, Fuels, Modeling, Multiphase Flow, NG, Sintering

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