Determining the impact of different types of biofuels on the quality of iron ore pellets

Authors

DOI:

https://doi.org/10.15587/1729-4061.2024.313633

Keywords:

pellet roasting, wheat straw, sunflower husk, charcoal

Abstract

The object of this study is the process of roasting iron ore pellets. The study solves the task of replacing fossil fuel with plant-based fuel in order to reduce environmental load and ensure the stable quality of pellets, which is necessary for use in blast furnaces.

The influence of biofuel content at a given temperature and air speed on the strength of pellets after roasting was studied. As a result of the research, it was established that the fuel content has a decisive effect on the strength of pellets. Among all types of fuel that were investigated, pellets with the addition of sunflower husks and wood had the highest strength that meets the requirements for blast furnace melting of 200 kilograms. The use of wheat straw and charcoal does not make it possible to completely replace solid fuel in the layer of pellets.

The results show that the use of up to 0.36 % of sunflower husk makes it possible to increase the strength of burned pellets compared to samples without biofuel content. Adding all other considered types of fuel reduced the strength of the pellets.

These results are explained by the different content of lignin, cellulose, and hemicellulose, which determines the characteristics of the biomass. The high content of cellulose and hemicellulose allows for high hydrophilicity due to the high number of OH groups and positively affects the formation of raw pellets. Volatile substances released during the combustion of biofuel contribute to the formation of spherical pores, as well as their uniform distribution, which prevents the propagation of cracks under load.

Research results make it possible to establish the optimal roasting mode, decrease harmful emissions, and bring down costs by reducing fossil fuel consumption

Author Biographies

Vadym Yefimenko, Ukrainian State University of Science and Technologies

PhD Student

Department of Iron and Steel Metallurgy

Maxim Boyko, Technical University “Metinvest Polytechnic” LLC

PhD, Associate Professor

Department of Metallurgy and Production Organization

Svitlana Zhuravlova, Ukrainian State University of Science and Technologies

PhD, Associate Professor

Department of Iron and Steel Metallurgy

Anatolii Marko, Boiler and Mechanical Plant LLC

Director

Oleksandr Tanchev, Ukrainian State University of Science and Technologies

PhD Student

Department of Iron and Steel Metallurgy

Ruslan Dutniy, Ukrainian State University of Science and Technologies

PhD Student

Department of Iron and Steel Metallurgy

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Determining the impact of different types of biofuels on the quality of iron ore pellets

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Published

2024-10-30

How to Cite

Yefimenko, V., Boyko, M., Zhuravlova, S., Marko, A., Tanchev, O., & Dutniy, R. (2024). Determining the impact of different types of biofuels on the quality of iron ore pellets. Eastern-European Journal of Enterprise Technologies, 5(6 (131), 55–63. https://doi.org/10.15587/1729-4061.2024.313633

Issue

Vol. 5 No. 6 (131) (2024): Technology organic and inorganic substances

Section

Technology organic and inorganic substances

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Copyright (c) 2024 Vadym Yefimenko, Maxim Boyko, Svitlana Zhuravlova, Anatolii Marko, Oleksandr Tanchev, Ruslan Dutniy

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