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Pyrometallurgical removal of zinc from basic oxygen steelmaking dust – A review of best available technology

Dan Stewart, Andrew Barron Orcid Logo

Resources, Conservation and Recycling, Volume: 157, Start page: 104746

Swansea University Authors: Dan Stewart, Andrew Barron Orcid Logo

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Abstract

Approximately 20 kg of dust and sludges are produced per ton of liquid steel produced via the blast furnaces (BF)/basic oxygen furnace (BOF) production route. Many of these dusts are recycled through the sinter plant or blast furnace route without issue, but high zinc content dusts are routinely lan...

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Published in: Resources, Conservation and Recycling
ISSN: 0921-3449
Published: Elsevier BV 2020
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URI: https://cronfa.swan.ac.uk/Record/cronfa53823
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spelling 2020-03-16T16:51:04.2299638 v2 53823 2020-03-16 Pyrometallurgical removal of zinc from basic oxygen steelmaking dust – A review of best available technology 804211bb4fb801d3f92cdbec5e12596a Dan Stewart Dan Stewart true false 92e452f20936d688d36f91c78574241d 0000-0002-2018-8288 Andrew Barron Andrew Barron true false 2020-03-16 FGSEN Approximately 20 kg of dust and sludges are produced per ton of liquid steel produced via the blast furnaces (BF)/basic oxygen furnace (BOF) production route. Many of these dusts are recycled through the sinter plant or blast furnace route without issue, but high zinc content dusts are routinely landfilled. Hydrometallurgical techniques, such as alkaline leaching, that are often utilized to remove zinc from electric arc furnace dusts are inappropriate for recovery of material from BOS dust due to the lower zinc concentration present and extra post-processing steps to utilize the separated iron product. Pyrometallurgical treatment through a rotary hearth furnace (RHF), in processes such as FASTMET®, can currently be considered as the most commercially attractive option for the processing and recovery of iron and zinc units when employed as part of an integrated steelworks. The crude zinc oxide produced is suitable for sale to zinc smelters, and the direct reduced iron produced provides process benefits through use, such as reduced blast furnace coking rates and increased productivity. The advantages and disadvantages of variations and alternatives are reviewed with regard to future developments. Journal Article Resources, Conservation and Recycling 157 104746 Elsevier BV 0921-3449 Basic oxygen steelmaking, Dust, Iron, Pyrometallurgy, Zinc 1 6 2020 2020-06-01 10.1016/j.resconrec.2020.104746 COLLEGE NANME Science and Engineering - Faculty COLLEGE CODE FGSEN Swansea University 2020-03-16T16:51:04.2299638 2020-03-16T16:51:04.2299638 Dan Stewart 1 Andrew Barron 0000-0002-2018-8288 2 53823__16874__193b24187c6f496a8d2dab48cf1231e0.pdf 53823.pdf 2020-03-19T11:15:41.2630330 Output 4975413 application/pdf Accepted Manuscript true 2021-03-05T00:00:00.0000000 Released under the terms of a Creative Commons Attribution Non-Commercial No Derivatives License (CC-BY-NC-ND). true eng
title Pyrometallurgical removal of zinc from basic oxygen steelmaking dust – A review of best available technology
spellingShingle Pyrometallurgical removal of zinc from basic oxygen steelmaking dust – A review of best available technology
Dan Stewart
Andrew Barron
title_short Pyrometallurgical removal of zinc from basic oxygen steelmaking dust – A review of best available technology
title_full Pyrometallurgical removal of zinc from basic oxygen steelmaking dust – A review of best available technology
title_fullStr Pyrometallurgical removal of zinc from basic oxygen steelmaking dust – A review of best available technology
title_full_unstemmed Pyrometallurgical removal of zinc from basic oxygen steelmaking dust – A review of best available technology
title_sort Pyrometallurgical removal of zinc from basic oxygen steelmaking dust – A review of best available technology
author_id_str_mv 804211bb4fb801d3f92cdbec5e12596a
92e452f20936d688d36f91c78574241d
author_id_fullname_str_mv 804211bb4fb801d3f92cdbec5e12596a_***_Dan Stewart
92e452f20936d688d36f91c78574241d_***_Andrew Barron
author Dan Stewart
Andrew Barron
author2 Dan Stewart
Andrew Barron
format Journal article
container_title Resources, Conservation and Recycling
container_volume 157
container_start_page 104746
publishDate 2020
institution Swansea University
issn 0921-3449
doi_str_mv 10.1016/j.resconrec.2020.104746
publisher Elsevier BV
document_store_str 1
active_str 0
description Approximately 20 kg of dust and sludges are produced per ton of liquid steel produced via the blast furnaces (BF)/basic oxygen furnace (BOF) production route. Many of these dusts are recycled through the sinter plant or blast furnace route without issue, but high zinc content dusts are routinely landfilled. Hydrometallurgical techniques, such as alkaline leaching, that are often utilized to remove zinc from electric arc furnace dusts are inappropriate for recovery of material from BOS dust due to the lower zinc concentration present and extra post-processing steps to utilize the separated iron product. Pyrometallurgical treatment through a rotary hearth furnace (RHF), in processes such as FASTMET®, can currently be considered as the most commercially attractive option for the processing and recovery of iron and zinc units when employed as part of an integrated steelworks. The crude zinc oxide produced is suitable for sale to zinc smelters, and the direct reduced iron produced provides process benefits through use, such as reduced blast furnace coking rates and increased productivity. The advantages and disadvantages of variations and alternatives are reviewed with regard to future developments.
published_date 2020-06-01T04:24:53Z
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