Biochars in Iron Ores Sintering Process: Effect on Sinter Quality and Emission

Marian Niesler, Janusz Stecko, Sławomir Stelmach and Anna Kwiecińska-Mydlak
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Marian Niesler: Łukasiewicz Research Network—Institute for Ferrous Metallurgy, K. Miarki 12-14 St, 44-100 Gliwice, Poland
Janusz Stecko: Łukasiewicz Research Network—Institute for Ferrous Metallurgy, K. Miarki 12-14 St, 44-100 Gliwice, Poland
Sławomir Stelmach: Institute for Chemical Processing of Coal, Zamkowa 1 St, 41-803 Zabrze, Poland
Anna Kwiecińska-Mydlak: Institute for Chemical Processing of Coal, Zamkowa 1 St, 41-803 Zabrze, Poland

Energies, 2021, vol. 14, issue 13, 1-20

Abstract: The article presents results of the research on the use of chars produced during pyrolysis of residual biomass as a substitutional fuel in the iron ore sintering process. Such an approach allows to implement circular economy and industrial symbiosis to the iron and steel branches. The effect of the substitution of conventional coke breeze fuel used in sintering on final sinter quality and emission was examined. With regard to productivity, fuel consumption, and properties of the sinter it was shown that the share of tested biochars in fuel may be kept at 10, and up to 30 wt.%, depending on the biochar type. It was observed that with the use of the biochars, the content of iron oxide in the sinter decreased, which was advantageous. Moreover, the sinter obtained in the presence of biochars was characterized with better strength and abrasion than the sinter obtained with coke breeze-based fuel, improving the final product quality. The presence of biochar influenced the raw exhaust gas composition and resulted in a slight increase of organic and inorganic carbon compounds content, while the amount of sulfur oxides was noticeably decreased. It was concluded that the biochars may be applied in the sintering process at established share in the fuel stream.

Keywords: pyrolysis; residual biomass; biochar; substitutional fuel; environmental effect (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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