A Study on Bio-Coke Production—The Influence of Bio-Components Addition on Coke-Making Blend Properties

Michał Rejdak (), Małgorzata Wojtaszek-Kalaitzidi, Grzegorz Gałko, Bartosz Mertas, Tomasz Radko, Robert Baron, Michał Książek, Sten Yngve Larsen, Marcin Sajdak and Stavros Kalaitzidis
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Michał Rejdak: Institute of Energy and Fuel Processing Technology, 1 Zamkowa Street, 41-803 Zabrze, Poland
Małgorzata Wojtaszek-Kalaitzidi: Institute of Energy and Fuel Processing Technology, 1 Zamkowa Street, 41-803 Zabrze, Poland
Grzegorz Gałko: Institute of Energy and Fuel Processing Technology, 1 Zamkowa Street, 41-803 Zabrze, Poland
Bartosz Mertas: Institute of Energy and Fuel Processing Technology, 1 Zamkowa Street, 41-803 Zabrze, Poland
Tomasz Radko: Institute of Energy and Fuel Processing Technology, 1 Zamkowa Street, 41-803 Zabrze, Poland
Robert Baron: Koksownia Częstochowa Nowa, 51 Chłodna Street, 00-867 Warszawa, Poland
Michał Książek: Sintef AS, 3 Richard Birkelands Street, 7034 Trondheim, Norway
Sten Yngve Larsen: Eramet Norway AS, CO/O Sintef Industri, Alfred Getz vei 2 B, 7034 Trondheim, Norway
Marcin Sajdak: Department of Air Protection, Faculty of Energy and Environmental Engineering, Silesian University of Technology in Gliwice, 44-100 Gliwice, Poland
Stavros Kalaitzidis: Department of Geology, School of Natural Sciences, University of Patras, GR-265 04 Rio-Patras, Greece

Energies, 2022, vol. 15, issue 18, 1-27

Abstract: Due to global warming, technologies reducing CO 2 emissions in the metallurgical industry are being sought. One possibility is to use bio-coke as a substitute for classic coke made of 100% fossil coal. Bio-coke can be produced on the basis of coal with the addition of substances of biomass origin. Blends for the production of bio-coke should have appropriate coke-making properties to ensure the appropriate quality of bio-coke. The article presents the results of the research on the influence of the addition (up to 20%) of bio-components of different origins to the coke blend on its coke-making properties, i.e., Gieseler Fluidity, Arnu—Audibert Dilatation and Roga Index. The bio-components used in the research were raw and thermally processed waste biomass of different origins (forestry: beech and alder woodchips; sawmill: pine sawdust; and the food industry: hazelnut shells and olive kernels) and commercial charcoal. Studies have shown that both the amount of additive and the type of additive affect the obtained coking properties. There was a decrease in fluidity, dilatation and Roga Index values, with more favorable results obtained for the addition of carbonized biomass and for additives with a higher apparent density. A regressive mathematical model on the influence of the share of the additive and its properties (oxygen content and apparent density) on the percentage decrease in fluidity was also developed.

Keywords: bio-coke; biomass; coke-making; renewable; bio-components; coke; biomass (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: 2022
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