Effect of blast furnace sludge (BFS) characteristics on suitable recycling process determining |
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Author: | Omran, Mamdouh1,2; Fabritius, Timo1; Paananen, Timo3 |
Organizations: |
1Process Metallurgy Research Group, Faculty of Technology, University of Oulu, Oulu, Finland 2Mineral Processing and Agglomeration Lab, Central Metallurgical Research and Development Institute, Cairo, Egypt 3SSAB Europe, Raahe, Finland |
Format: | article |
Version: | published version |
Access: | open |
Online Access: | PDF Full Text (PDF, 2.4 MB) |
Persistent link: | http://urn.fi/urn:nbn:fi-fe2020040710682 |
Language: | English |
Published: |
Scientific Research Publishing,
2017
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Publish Date: | 2020-04-07 |
Description: |
AbstractThe present study aims to give a detailed characterization of blast furnace sludge (BFS) by using different techniques, in order to determine the most effective recycling method to recover valuable metals from this waste. BFS is composed mainly of hematite, as its iron-bearing phase, and carbon, in addition to fractions of silicate and carbonate materials. The studied BFS shows relatively high contents of iron (Fe) (390 g.kg⁻¹), and carbon (C) (290 g.kg⁻¹), due to abundance of hematite and coke, while the concentration of zinc (Zn) (2.5 g.kg⁻¹) is low. The XRD analyses indicated that, hematite is more concentrated in the fine fraction (<20 μm), while the coarser fraction (90–250 μm) is dominated by calcite, quartz and X-ray amorphous coke. SEM-EDX analyses confirmed that particles rich in iron and zinc were detected in the fine fraction (<20 μm) of the sludge. Due to high Fe and C content in BFS, it can be utilized as self-reducing material and briquetting represent a potential method for recycling of blast furnace sludge. see all
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Series: |
Journal of minerals and materials characterization and engineering |
ISSN: | 2327-4077 |
ISSN-E: | 2327-4085 |
ISSN-L: | 2327-4077 |
Volume: | 5 |
Issue: | 4 |
Pages: | 185 - 197 |
DOI: | 10.4236/jmmce.2017.54016 |
OADOI: | https://oadoi.org/10.4236/jmmce.2017.54016 |
Type of Publication: |
A1 Journal article – refereed |
Field of Science: |
218 Environmental engineering |
Subjects: | |
Copyright information: |
© 2017 by authors andScientific Research Publishing Inc.This work is licensed under the CreativeCommons Attribution InternationalLicense (CC BY 4.0). |
https://creativecommons.org/licenses/by/4.0/ |