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The Potential of Re...
The Potential of Recycling the High-Zinc Fraction of Upgraded BF Sludge to the Desulfurization Plant and Basic Oxygen Furnace
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- Andersson, Anton (författare)
- Luleå tekniska universitet,Mineralteknik och metallurgi
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- Andersson, Mats (författare)
- SSAB Europe, Luleå
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- Mousa, Elsayed (författare)
- Swerim AB, Luleå, Sweden; Central Metallurgical Research and Development Institute, Cairo, Egypt
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- Kullerstedt, Adeline (författare)
- Swerim AB, Luleå, Sweden
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- Ahmed, Hesham (författare)
- Luleå tekniska universitet,Mineralteknik och metallurgi,Central Metallurgical Research and Development Institute, Cairo, Egypt
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- Björkman, Bo (författare)
- Luleå tekniska universitet,Mineralteknik och metallurgi
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- Sundqvist Ökvist, Lena (författare)
- Luleå tekniska universitet,Mineralteknik och metallurgi,Swerim AB, Luleå, Sweden
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(creator_code:org_t)
- 2018-12-12
- 2018
- Engelska.
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Ingår i: Metals. - : MDPI. - 2075-4701. ; 8:12
- Relaterad länk:
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https://ltu.diva-por... (primary) (Raw object)
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https://www.mdpi.com...
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https://urn.kb.se/re...
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https://doi.org/10.3...
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Abstract
Ämnesord
Stäng
- In ore-based steelmaking, blast furnace (BF) dust is generally recycled to the BF via the sinter or cold-bonded briquettes and injection. In order to recycle the BF sludge to the BF, the sludge has to be upgraded, removing zinc. The literature reports cases of recycling the low-zinc fraction of upgraded BF sludge to the BF. However, research towards recycling of the high-zinc fraction of BF sludge within the ore-based steel plant is limited. In the present paper, the high-zinc fraction of tornado-treated BF sludge was incorporated in self-reducing cold-bonded briquettes and pellets. Each type of agglomerate was individually subjected to technical-scale smelting reduction experiments aiming to study the feasibility of recycling in-plant residues to the hot metal (HM) desulfurization (deS) plant. The endothermic reactions within the briquettes decreased the heating and reduction rate leaving the briquettes unreduced and unmelted. The pellets were completely reduced within eight minutes of contact with HM but still showed melt-in problems. Cold-bonded briquettes, without BF sludge, were charged in industrial-scale trials to study the recycling potential to the HM deS plant and basic oxygen furnace (BOF). The trials illustrated a potential for the complete recycling of the high-zinc fraction of BF sludge. However, further studies were identified to be required to verify these results.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Metallurgi och metalliska material (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Metallurgy and Metallic Materials (hsv//eng)
Nyckelord
- recycling
- blast furnace sludge
- smelting reduction
- desulfurization
- basic oxygen furnace
- cold-bonded briquettes
- cold-bonded pellets
- low-sulfur binders
- Process Metallurgy
- Processmetallurgi
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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