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Thermal Analysis in Examinations of Reduction of Mixtures of Acidic Pellets and High-basicity Sinters

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Abstract

The aim of this work was to investigate the application of mixtures of high-basicity sinters and acidic pellets in blast furnace charges.

The ratio of high-basicity sinter and pellets depends on the nature and basicity of the latter, and is established in order to secure desired properties of the slag and sufficient reducibility and mechanical strength of the furnace charge. Such a composition of the charge leads to a considerable cost decrease related to coke saving, the elimination of fluxes and a decrease in air pollution.

Examinations of phase composition and physicochemical properties of the sinters and pellets as separate materials were carried out. The effect of the mineral composition of sinters with a basicity of 1.7–2.0 on the reducibility was determined.

Sinters of different basicities (CaO/SiO2=1.7; 2.0) mixed with pellets from Poltawawere reduced in a CO/CO2 gas mixture. The reduction process was followed by thermal analysis.

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References

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Authors and Affiliations

  1. Faculty of Metallurgy and Material Sciences, University of Mining and Metallurgy, 30-059, Cracow, Mickiewicza 30, Poland

    J. Orewczyk, S. Jasieńska, A. Łedzki & S. Iwanczenko

Authors
  1. J. Orewczyk
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  2. S. Jasieńska
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  3. A. Łedzki
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  4. S. Iwanczenko
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Orewczyk, J., Jasieńska, S., Łedzki, A. et al. Thermal Analysis in Examinations of Reduction of Mixtures of Acidic Pellets and High-basicity Sinters. Journal of Thermal Analysis and Calorimetry 55, 531–536 (1999). https://doi.org/10.1023/A:1010150020419

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  • DOI: https://doi.org/10.1023/A:1010150020419

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