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Energy and exergy analyses of direct ironsmelting processes

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  • Ostrovski, Oleg
  • Zhang, Guangqing

Abstract

The paper discusses the concept of exergy, the energy and exergy balances of blast furnace ironmaking and DIOS-type direct ironsmelting processes, and exergy losses in these processes. The overall fuel efficiency of direct ironsmelting strongly depends on the utilisation of off-gas. It is shown that if off-gas is not utilised efficiently, the fuel efficiency of the direct ironsmelting process is enhanced strongly by increasing heat transfer efficiency and post-combustion ratio. Otherwise, when the off-gas is utilised efficiently, post-combustion ratio and heat transfer efficiency are less significant for the overall fuel efficiency.

Suggested Citation

  • Ostrovski, Oleg & Zhang, Guangqing, 2005. "Energy and exergy analyses of direct ironsmelting processes," Energy, Elsevier, vol. 30(15), pages 2772-2783.
    • Handle: RePEc:eee:energy:v:30:y:2005:i:15:p:2772-2783
    DOI: 10.1016/j.energy.2005.01.007
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    References listed on IDEAS

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    1. Bisio, G & Rubatto, G & Martini, R, 2000. "Heat transfer, energy saving and pollution control in UHP electric-arc furnaces," Energy, Elsevier, vol. 25(11), pages 1047-1066.
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    Cited by:

    1. Zhang, Wei & Zhang, Juhua & Xue, Zhengliang, 2017. "Exergy analyses of the oxygen blast furnace with top gas recycling process," Energy, Elsevier, vol. 121(C), pages 135-146.
    2. Domínguez, Adriana & Valero, Alicia & Valero, Antonio, 2013. "Exergy accounting applied to metallurgical systems: The case of nickel processing," Energy, Elsevier, vol. 62(C), pages 37-45.
    3. BoroumandJazi, G. & Rismanchi, B. & Saidur, R., 2013. "A review on exergy analysis of industrial sector," Renewable and Sustainable Energy Reviews, Elsevier, vol. 27(C), pages 198-203.
    4. Mazin Obaidat & Ahmed Al-Ghandoor & Patrick Phelan & Rene Villalobos & Ammar Alkhalidi, 2018. "Energy and Exergy Analyses of Different Aluminum Reduction Technologies," Sustainability, MDPI, vol. 10(4), pages 1-21, April.

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