A Review on Stabilization of Ladle Furnace Slag-Powdering Issue

Ladle furnace (LF) slag plays an important role in modern steel making in terms of quality and productivity. The major challenge of using LF slag is its dusting problem. The polymorphic transformation of β-dicalcium silicate (monoclinic) to γ-dicalcium silicate (Orthorhombic) at about 450 °C is the...

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Bibliographic Details
Published in:Journal of sustainable metallurgy 2022-12, Vol.8 (4), p.1435-1449
Main Authors: Dash, Abinash, Chanda, Prasenjit, Tripathy, P. K., Kumar, Nikhil
Format: Article
Language:English
Subjects:
Dicalcium silicate
Disintegration
Earth and Environmental Science
Environment
Iron and steel industry
Ladle metallurgy
Ladles
Metallic Materials
Powdering
Review Article
Slag
Steel making
Sustainable Development
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Summary:Ladle furnace (LF) slag plays an important role in modern steel making in terms of quality and productivity. The major challenge of using LF slag is its dusting problem. The polymorphic transformation of β-dicalcium silicate (monoclinic) to γ-dicalcium silicate (Orthorhombic) at about 450 °C is the leading cause of its disintegration. Hydration of slag, thermal shrinkage, and slower cooling are other reasons which are mainly responsible for slag powdering. The presence of dust particles due to disintegration not only creates a problem for its valorization but at the same time causes environmental issues. It becomes necessary for the steel makers to find out possible solutions to prevent such disintegration of slag. This review paper represents a detailed analysis of possible industrial solutions available for preventing of disintegration of LF slag and also will assist the steel operators for its effective utilization in major applications. Graphical Abstract
ISSN:2199-3823
2199-3831
DOI:10.1007/s40831-022-00597-7