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The recycling and reuse of steelmaking slags — A review

Lucy V. Fisher, Andrew Barron

Resources, Conservation and Recycling, Volume: 146, Pages: 244 - 255

Swansea University Author: Andrew Barron

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DOI (Published version): 10.1016/j.resconrec.2019.03.010

Abstract

Large volumes of slags are formed as by-products during the refinement of pig iron by basic oxygen steelmaking or electric arc furnace steelmaking. In order to lower the environmental impact of the steel industry and ensure its economic sustainability, there have been significant studies finding the...

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Published in: Resources, Conservation and Recycling
ISSN: 0921-3449
Published: 2019
Online Access: Check full text

URI: https://cronfa.swan.ac.uk/Record/cronfa49937
first_indexed 2019-04-09T13:04:50Z
last_indexed 2019-07-17T15:33:54Z
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spelling 2019-07-17T10:59:05.7537792 v2 49937 2019-04-08 The recycling and reuse of steelmaking slags — A review 92e452f20936d688d36f91c78574241d Andrew Barron Andrew Barron true false 2019-04-08 Large volumes of slags are formed as by-products during the refinement of pig iron by basic oxygen steelmaking or electric arc furnace steelmaking. In order to lower the environmental impact of the steel industry and ensure its economic sustainability, there have been significant studies finding the ways to recycle by-products. The formation, composition and physical properties of steel making slag are discussed with regard to the problems associated with its reuse. The volume instability caused by free lime exposure to moisture means that the reuse of steelmaking slag is often limited as many potential applications, and the leaching behavior of steelmaking slag is important for environmental considerations. Land-based applications that have been demonstrated include replacing natural sand as aggregate in cement, which may be combined with the CO2 sequestration properties. Steel slag shows use as a liming material (when spread over acidic soils to help to raise the pH to a more neutral level) and to enhance the physical properties of soft soils. Potential benefits to the marine environment is due to high porosity and large surface area, making slags ideal for coral reef repair (e.g., overcoming coral bleaching) and replacement (e.g., artificial reef to promote growth of green marine plants and seagrass), as well as a growth promoter for seaweed and phytoplankton that are microscopic organisms that are an essential component of ecosystems in oceans around the world. The chemistry of steelmaking slag also makes it a contender for adsorption of H2S and metalloids from marine environments. Journal Article Resources, Conservation and Recycling 146 244 255 0921-3449 Steelmaking slag; Cement; Coral reef; CO2 sequestration; Seaweed; Phytoplankton 31 12 2019 2019-12-31 10.1016/j.resconrec.2019.03.010 COLLEGE NANME COLLEGE CODE Swansea University 2019-07-17T10:59:05.7537792 2019-04-08T13:29:04.3835732 Faculty of Science and Engineering School of Engineering and Applied Sciences - Chemical Engineering Lucy V. Fisher 1 Andrew Barron 2 0049937-09042019090306.pdf fisher2019.pdf 2019-04-09T09:03:06.5400000 Output 15754654 application/pdf Accepted Manuscript true 2020-04-04T00:00:00.0000000 true eng
title The recycling and reuse of steelmaking slags — A review
spellingShingle The recycling and reuse of steelmaking slags — A review
Andrew Barron
title_short The recycling and reuse of steelmaking slags — A review
title_full The recycling and reuse of steelmaking slags — A review
title_fullStr The recycling and reuse of steelmaking slags — A review
title_full_unstemmed The recycling and reuse of steelmaking slags — A review
title_sort The recycling and reuse of steelmaking slags — A review
author_id_str_mv 92e452f20936d688d36f91c78574241d
author_id_fullname_str_mv 92e452f20936d688d36f91c78574241d_***_Andrew Barron
author Andrew Barron
author2 Lucy V. Fisher
Andrew Barron
format Journal article
container_title Resources, Conservation and Recycling
container_volume 146
container_start_page 244
publishDate 2019
institution Swansea University
issn 0921-3449
doi_str_mv 10.1016/j.resconrec.2019.03.010
college_str Faculty of Science and Engineering
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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
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description Large volumes of slags are formed as by-products during the refinement of pig iron by basic oxygen steelmaking or electric arc furnace steelmaking. In order to lower the environmental impact of the steel industry and ensure its economic sustainability, there have been significant studies finding the ways to recycle by-products. The formation, composition and physical properties of steel making slag are discussed with regard to the problems associated with its reuse. The volume instability caused by free lime exposure to moisture means that the reuse of steelmaking slag is often limited as many potential applications, and the leaching behavior of steelmaking slag is important for environmental considerations. Land-based applications that have been demonstrated include replacing natural sand as aggregate in cement, which may be combined with the CO2 sequestration properties. Steel slag shows use as a liming material (when spread over acidic soils to help to raise the pH to a more neutral level) and to enhance the physical properties of soft soils. Potential benefits to the marine environment is due to high porosity and large surface area, making slags ideal for coral reef repair (e.g., overcoming coral bleaching) and replacement (e.g., artificial reef to promote growth of green marine plants and seagrass), as well as a growth promoter for seaweed and phytoplankton that are microscopic organisms that are an essential component of ecosystems in oceans around the world. The chemistry of steelmaking slag also makes it a contender for adsorption of H2S and metalloids from marine environments.
published_date 2019-12-31T10:20:24Z
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score 11.059337

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