Analysis of a compact iron ore sintering process based on agglomerated biochar and gaseous fuels using a 3D multiphase multicomponent mathematical model

Abstract

One of the most challenging issues of the actual steelmaking industry is the mitigation of CO2 emissions. To cope with this target, the massive use of granulated biomass and fuel gas in the iron ore sintering process are a promising technological solution and can contribute to mitigating the environmental impacts of the steel plant. We focused on the development of a comprehensive computational tool to analyze and suggest new practices for the sintering process, which mitigates CO2 emissions. The modeling approach uses an integrated multiphase and multicomponent theory. New phases, chemical species and rate equations are included. The model predictions were confronted with industrial data showing good adherence. New scenarios for utilizing the combined technologies of granulated biomass and gas fuel injections are investigated. The model predictions indicated that the high performance of the process with suitable sinter quality could be achieved. The conditions for operating the sintering process with fully renewable energy resources are demonstrated and new sustainable practices are proposed. Calculated results indicated that productivity could increase 50% for the best conditions analyzed.