Resumo

BRUZUAL, Cristobal Feliciano  e  MATHEWS, John A. Economic assessment of charcoal injection in the ironmaking process (bio-pci): methodology and data. uct [online]. 2014, vol.18, n.70, pp.31-53. ISSN 1316-4821.

There is a growing awareness of the necessity to reduce the utilization of fossil fuels in the ironmaking process, in this respect, the injection of small particles of charcoal (Bio-PCI) has been regarded as a feasible and practical way to reduce the in 25% the CO2 emission of hot metal production. Despite the positive outlook, there is a significant price difference between charcoal and coal that may deter the prospects of Bio-PCI deployment. This contribution builds on the methodology proposed to assess the economic impact of charcoal injection, based on a blast furnace simulation and a cost objective function. For the simulation, actual processing parameters of 9 fuel-efficient Blast Furnaces were used and current pricing data for the economic assessment. The work begins defining the advantages and limitations of charcoal use in ironmaking, continues with an analysis of diverse frameworks proposed in the literature for the prediction of the impact of Bio-PCI over the economy of the ironmaking in BF. Results show that prices of residual biomass (107-133 USD/t) are substantially more economical than primary biomass (310-400 USD/t), thus the use of residual biomass would help to significantly reduce the cost of charcoal production.

Palavras-chave : Bio-Pulverized Coal Injection (Bio-PCI); Charcoal; Sustainable Iron Production.

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