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Developments in iron ore sintering using a laboratory scaled development platform / TARIQ AL-HAJI

Swansea University Author: TARIQ AL-HAJI

DOI (Published version): 10.23889/SUthesis.62668.oa

Abstract

Iron ore sintering is the pre-treatment process of agglomerating fine grained iron ores into a coarse grained solid porous burden, suitable for the blast furnace. Iron ore sinter is the primary source of a blast furnace’s burden and as such plays a critical role in the steel making process. A small-s...

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Published: Swansea 2023
Institution: Swansea University
Degree level: Doctoral
Degree name: EngD
Supervisor: Pleydell-Pearce, Cameron ; Barnes, Peter ; Penney, David
URI: https://cronfa.swan.ac.uk/Record/cronfa62668
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first_indexed 2023-02-15T13:56:26Z
last_indexed 2023-02-16T04:21:06Z
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spelling 2023-02-15T14:52:11.6454047 v2 62668 2023-02-15 Developments in iron ore sintering using a laboratory scaled development platform ed243dbda459c2a7f7fca107088d24fa TARIQ AL-HAJI TARIQ AL-HAJI true false 2023-02-15 Iron ore sintering is the pre-treatment process of agglomerating fine grained iron ores into a coarse grained solid porous burden, suitable for the blast furnace. Iron ore sinter is the primary source of a blast furnace’s burden and as such plays a critical role in the steel making process. A small-scale pilot line sinter pot was commissioned and validated for the proposed research. Findings suggested that altering blend chemical composition, granulation properties, bed permeability and flame front characteristics were the most important parameters in optimising the process. Research conducted in this paper suggested that varying these parameters impacted the iron ore sintering process and quality of the sinter produced. Thus, this work package focused on how these parameters could be varied in order to maximise productivity and quality. The work package also focused on various fuel particle size distributions as well as ratios and found that this also plays a critical role in influencing process parameters as well as the quality of sinter produced. It was found that by controlling the particle size of fuel, process stability increased. This paper also focused on novel additions to a sintering blend, which could be up-scaled and implemented to industry, ensuring the iron and steel making industry is heading towards a more circular economy. It was found that by micro-pelletizing fine iron ores, permeability was increased and thus pro-ductivity improved. It was also found that the chemical composition of by-products such as used Mag-C refractory brick used in lining vessels at the BOS plant could be utilised by crushing and incorporating into raw sinter blends, offsetting purchased materials. Quality parameters of the produced sinter during investigations included sinter strength, reducibility, chemical composition, optical microscopy and phase min-eralogy. Process parameters such as sintering time, temperature, flow rates, cooling rates and flame front characteristics were also monitored through out to make precise and accurate conclusions. E-Thesis Swansea Iron ore sintering, Flame-front, Granulation 10 2 2023 2023-02-10 10.23889/SUthesis.62668.oa COLLEGE NANME COLLEGE CODE Swansea University Pleydell-Pearce, Cameron ; Barnes, Peter ; Penney, David Doctoral EngD M2A, EPSRC doctoral training grant 2023-02-15T14:52:11.6454047 2023-02-15T11:51:27.4021517 Faculty of Science and Engineering School of Engineering and Applied Sciences - Materials Science and Engineering TARIQ AL-HAJI 1 62668__26590__791b963597c348508b1d693bf58ba35c.pdf Al_Haji_Tariq_EngD_Thesis_Final_Cronfa.pdf 2023-02-15T14:07:40.2703387 Output 63690210 application/pdf E-Thesis – open access true Copyright: The author, Tariq Al-Haji, 2023. true eng
title Developments in iron ore sintering using a laboratory scaled development platform
spellingShingle Developments in iron ore sintering using a laboratory scaled development platform
TARIQ AL-HAJI
title_short Developments in iron ore sintering using a laboratory scaled development platform
title_full Developments in iron ore sintering using a laboratory scaled development platform
title_fullStr Developments in iron ore sintering using a laboratory scaled development platform
title_full_unstemmed Developments in iron ore sintering using a laboratory scaled development platform
title_sort Developments in iron ore sintering using a laboratory scaled development platform
author_id_str_mv ed243dbda459c2a7f7fca107088d24fa
author_id_fullname_str_mv ed243dbda459c2a7f7fca107088d24fa_***_TARIQ AL-HAJI
author TARIQ AL-HAJI
author2 TARIQ AL-HAJI
format E-Thesis
publishDate 2023
institution Swansea University
doi_str_mv 10.23889/SUthesis.62668.oa
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Engineering and Applied Sciences - Materials Science and Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Materials Science and Engineering
document_store_str 1
active_str 0
description Iron ore sintering is the pre-treatment process of agglomerating fine grained iron ores into a coarse grained solid porous burden, suitable for the blast furnace. Iron ore sinter is the primary source of a blast furnace’s burden and as such plays a critical role in the steel making process. A small-scale pilot line sinter pot was commissioned and validated for the proposed research. Findings suggested that altering blend chemical composition, granulation properties, bed permeability and flame front characteristics were the most important parameters in optimising the process. Research conducted in this paper suggested that varying these parameters impacted the iron ore sintering process and quality of the sinter produced. Thus, this work package focused on how these parameters could be varied in order to maximise productivity and quality. The work package also focused on various fuel particle size distributions as well as ratios and found that this also plays a critical role in influencing process parameters as well as the quality of sinter produced. It was found that by controlling the particle size of fuel, process stability increased. This paper also focused on novel additions to a sintering blend, which could be up-scaled and implemented to industry, ensuring the iron and steel making industry is heading towards a more circular economy. It was found that by micro-pelletizing fine iron ores, permeability was increased and thus pro-ductivity improved. It was also found that the chemical composition of by-products such as used Mag-C refractory brick used in lining vessels at the BOS plant could be utilised by crushing and incorporating into raw sinter blends, offsetting purchased materials. Quality parameters of the produced sinter during investigations included sinter strength, reducibility, chemical composition, optical microscopy and phase min-eralogy. Process parameters such as sintering time, temperature, flow rates, cooling rates and flame front characteristics were also monitored through out to make precise and accurate conclusions.
published_date 2023-02-10T04:22:28Z
_version_ 1763754480336109568
score 11.012678

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