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The Use of Steelmaking Slags in Land and Marine Applications / LUCY FISHER

Swansea University Author: LUCY FISHER

DOI (Published version): 10.23889/SUthesis.64999

Abstract

Iron and steel are essential components of the world’s infrastructure and have applications across all industries. Demand for steel across the world has lead to 1900 million tons being produced annually, with this number expected to keep increasing. This means that the waste coming from the steelmak...

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Published: Swansea, Wales, UK 2023
Institution: Swansea University
Degree level: Doctoral
Degree name: Ph.D
Supervisor: Andreoli, Enrico.
URI: https://cronfa.swan.ac.uk/Record/cronfa64999
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first_indexed 2023-11-16T14:58:58Z
last_indexed 2023-11-16T14:58:58Z
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spelling v2 64999 2023-11-16 The Use of Steelmaking Slags in Land and Marine Applications f3eaf5932f8b12f284ca627bb75b8202 LUCY FISHER LUCY FISHER true false 2023-11-16 Iron and steel are essential components of the world’s infrastructure and have applications across all industries. Demand for steel across the world has lead to 1900 million tons being produced annually, with this number expected to keep increasing. This means that the waste coming from the steelmaking process will most likely also keep increasing. Basic oxygen steelmaking (BOS) slag is a waste product from the secondary steelmaking process. However much of the BOS slag goes to landfill and does not get utilised as well as it could be. This thesis explores several different ways BOS slag can be utilised and looks at how effective it is in each application. The first application tested is the ability for the BOS slag to capture CO2 and how this then makes it suitable for applications within the concrete industry. The slag’s reaction to sea water was then assessed and what harmful effects it could possibly have on the environment. Slag is well known for being a good fertiliser for plants due to its desirable composition made up of Calcium, Silicon, Iron and others. The slag was tested to see if this specific kind of slag could provide fertiliser properties. It was also explored if the slag could be functionalised with carboxylic acids in order to become hydrophobic or hydrophilic meaning that when the slag is used as fertiliser for plants, water can be channelled towards the seed and not be absorbed before it reaches the seed. E-Thesis Swansea, Wales, UK Steelmaking Slag, Reutilisation, Recycling 26 9 2023 2023-09-26 10.23889/SUthesis.64999 COLLEGE NANME COLLEGE CODE Swansea University Andreoli, Enrico. Doctoral Ph.D ESRI ESRI 2023-11-16T15:10:06.6935055 2023-11-16T14:54:27.5194590 Faculty of Science and Engineering School of Engineering and Applied Sciences - Chemical Engineering LUCY FISHER 1 64999__29041__bc101a170a7e4a5d814dbf57fa820266.pdf 2023_Fisher_LV.final.64999.pdf 2023-11-16T14:59:21.3550203 Output 22247718 application/pdf E-Thesis – open access true Copyright: The Author, Lucy V. Fisher, 2023. true eng
title The Use of Steelmaking Slags in Land and Marine Applications
spellingShingle The Use of Steelmaking Slags in Land and Marine Applications
LUCY FISHER
title_short The Use of Steelmaking Slags in Land and Marine Applications
title_full The Use of Steelmaking Slags in Land and Marine Applications
title_fullStr The Use of Steelmaking Slags in Land and Marine Applications
title_full_unstemmed The Use of Steelmaking Slags in Land and Marine Applications
title_sort The Use of Steelmaking Slags in Land and Marine Applications
author_id_str_mv f3eaf5932f8b12f284ca627bb75b8202
author_id_fullname_str_mv f3eaf5932f8b12f284ca627bb75b8202_***_LUCY FISHER
author LUCY FISHER
author2 LUCY FISHER
format E-Thesis
publishDate 2023
institution Swansea University
doi_str_mv 10.23889/SUthesis.64999
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 - Chemical Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Chemical Engineering
document_store_str 1
active_str 0
description Iron and steel are essential components of the world’s infrastructure and have applications across all industries. Demand for steel across the world has lead to 1900 million tons being produced annually, with this number expected to keep increasing. This means that the waste coming from the steelmaking process will most likely also keep increasing. Basic oxygen steelmaking (BOS) slag is a waste product from the secondary steelmaking process. However much of the BOS slag goes to landfill and does not get utilised as well as it could be. This thesis explores several different ways BOS slag can be utilised and looks at how effective it is in each application. The first application tested is the ability for the BOS slag to capture CO2 and how this then makes it suitable for applications within the concrete industry. The slag’s reaction to sea water was then assessed and what harmful effects it could possibly have on the environment. Slag is well known for being a good fertiliser for plants due to its desirable composition made up of Calcium, Silicon, Iron and others. The slag was tested to see if this specific kind of slag could provide fertiliser properties. It was also explored if the slag could be functionalised with carboxylic acids in order to become hydrophobic or hydrophilic meaning that when the slag is used as fertiliser for plants, water can be channelled towards the seed and not be absorbed before it reaches the seed.
published_date 2023-09-26T15:10:04Z
_version_ 1782733765172264960
score 11.014067

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