Types and Composition of Biomass in Biocoke Synthesis with the Coal Blending Method

Erlina Yustanti, Endarto Yudo Wardhono, Anggoro Tri Mursito and Ali Alhamidi
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Erlina Yustanti: Department of Metallurgical Engineering, Faculty of Engineering, Sultan Ageng Tirtayasa University, Jl. Jend. Sudirman KM. 03 Cilegon, Banten 42435, Indonesia
Endarto Yudo Wardhono: Department of Chemical Engineering, Faculty of Engineering, Sultan Ageng Tirtayasa University, Jl. Jend. Sudirman KM. 03 Cilegon, Banten 42435, Indonesia
Anggoro Tri Mursito: Research Center for Geotechnology, National Research and Innovation Agency (BRIN), Jl. Sangkuriang Kampus LIPI Bandung, Gd. 70, Bandung 40135, Indonesia
Ali Alhamidi: Department of Metallurgical Engineering, Faculty of Engineering, Sultan Ageng Tirtayasa University, Jl. Jend. Sudirman KM. 03 Cilegon, Banten 42435, Indonesia

Energies, 2021, vol. 14, issue 20, 1-18

Abstract: The steelmaking industry requires coke as a reducing agent, as an energy source, and for its ability to hold slag in a blast furnace. Coking coal as raw coke material is very limited. Studying the use of biomass as a mixture of coking coal in the synthesis of biocoke is necessary to reduce greenhouse gas coal emissions. This research focuses on biomass and heating temperature through the coal blending method to produce biocoke with optimal mechanical properties for the blast-furnace standard. The heating temperature of biomass to biochar was evaluated at 400, 500, and 600 °C. The blending of coking coal with biochar was in the compositions of 95:5, 85:15, and 75:25 wt.%. A compacting force of 20 MPa was employed to produce biocoke that was 50 mm in diameter and 27 mm thick using a hot cylinder dye. The green sample was heated at 1100 °C for 4 h, followed by quenching with a water medium, resulting in dense samples. Increasing heating temperature is generally directly proportional to an increase in fixed carbon and calorific value. Biocoke that meets several blast-furnace criteria is a coal mixture with coconut-shell charcoal of 85:15 wt.%. Carbonization at 500 °C, yielding fixed carbon, calorific value, and compressive strength, was achieved at 89.02 ± 0.11%; 29.681 ± 0.46 MJ/kg, and 6.53 ± 0.4 MPa, respectively. This product meets several criteria for blast-furnace applications, with CRI 29.8 and CSR 55.1.

Keywords: biomass; biocoke; coke; coal blending (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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