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THE STRUCTURAL AND PHASE COMPOSITION OF THE SINTER PRODUCED WITH BIOMASS AND WITH COKE BREEZE

Mária Fröhlichová

Abstract

The energy security, the energy market and the climate change strategy characterize the current times. This forces us to seek new technologies and to modernize and intensify old technologies. The current strategy also significantly affects the blast furnace iron production and subsequently the production of agglomerate. Agglomerate production is closely related, from the ecological and energy points of view, with the production of coke, which is the basic fuel component of the agglomeration batch. That is coke breeze, which forms as an undersize by-product of the production of metallurgical coke. Coke is the most expensive and the most deficit raw material in the process of pig iron production. This is the reason for seeking alternative, substitute fuels that would reduce coke consumption and improve the quality of the environment by reducing emissions, especially CO2. Biomass is currently considered the most promising. Based on the above statements, the paper focuses on biomass, which can be considered as an alternative fuel in the partial replacement of coke breeze in the sintering process, i.e. iron ore agglomerate production. The study explores the impact of the substitution of coke breeze with wood biomass on the microstructure and the phase composition of the agglomerate.

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DOI resolver: doi.org/10.5593/sgem2018/1.4/s04.026

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