Next Article in Journal
Application of a GTN Damage Model Predicting the Fracture of 5052-O Aluminum Alloy High-Speed Electromagnetic Impaction
Next Article in Special Issue
Scandium Recovery from an Ammonium Fluoride Strip Liquor by Anti-Solvent Crystallization
Previous Article in Journal
Homogenization and Growth Behavior of Second-Phase Particles in a Deformed Zr–Sn–Nb–Fe–Cu–Si–O Alloy
Previous Article in Special Issue
Conditioning of Spent Stripping Solution for the Recovery of Metals
Article Menu
Issue 10 (October) cover image

Export Article

Open AccessArticle
Metals 2018, 8(10), 760; https://doi.org/10.3390/met8100760

A Holistic and Experimentally-Based View on Recycling of Off-Gas Dust within the Integrated Steel Plant

1
Department of Civil, Environmental and Natural Resources Engineering, Luleå University of Technology, 97187 Luleå, Sweden
2
Swerea MEFOS, 97125 Luleå, Sweden
3
SSAB Europe, 97437 Luleå, Sweden
4
Central Metallurgical Research and Development Institute, Cairo 124 22, Egypt
*
Author to whom correspondence should be addressed.
Received: 4 September 2018 / Revised: 20 September 2018 / Accepted: 20 September 2018 / Published: 25 September 2018
  |  
PDF [3304 KB, uploaded 25 September 2018]
  |  

Abstract

Ore-based ironmaking generates a variety of residues, including slags and fines such as dust and sludges. Recycling of these residues within the integrated steel plant or in other applications is essential from a raw-material efficiency perspective. The main recycling route of off-gas dust is to the blast furnace (BF) via sinter, cold-bonded briquettes and tuyere injection. However, solely relying on the BF for recycling implicates that certain residues cannot be recycled in order to avoid build-up of unwanted elements, such as zinc. By introducing a holistic view on recycling where recycling via other process routes, such as the desulfurization (deS) station and the basic oxygen furnace (BOF), landfilling can be avoided. In the present study, process integration analyses were utilized to determine the most efficient recycling routes for off-gas dust that are currently not recycled within the integrated steel plants of Sweden. The feasibility of recycling was studied in experiments conducted in laboratory, pilot, and full-scale trials in the BF, deS station, and BOF. The process integration analyses suggested that recycling to the BF should be maximized before considering the deS station and BOF. The experiments indicated that the amount of residue that are not recycled could be minimized. View Full-Text
Keywords: recycling; cold-bonded briquettes; blast furnace; desulfurization; basic oxygen furnace; dust; sludge; fines recycling; cold-bonded briquettes; blast furnace; desulfurization; basic oxygen furnace; dust; sludge; fines
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Andersson, A.; Gullberg, A.; Kullerstedt, A.; Sandberg, E.; Andersson, M.; Ahmed, H.; Sundqvist-Ökvist, L.; Björkman, B. A Holistic and Experimentally-Based View on Recycling of Off-Gas Dust within the Integrated Steel Plant. Metals 2018, 8, 760.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Metals EISSN 2075-4701 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top