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http://dx.doi.org/10.7844/kirr.2013.22.1.36

A Study on the Recycling of Molten Ladle Slag Residue into LF Process  

Kim, Young-Hwan (Steel Making Research Team in R&D center of Dongkuk Steel mill co.)
Yoo, Jung-Min (Steel Making Research Team in R&D center of Dongkuk Steel mill co.)
Kim, Dong-Sik (Steel Making Research Team in R&D center of Dongkuk Steel mill co.)
Lim, Jong-Hoon (Steel Making Team in Dongkuk Steel mill co., Incheon works)
Yang, Sung-Ho (Steel Making Team in Dongkuk Steel mill co., Incheon works)
Publication Information
Resources Recycling / v.22, no.1, 2013 , pp. 36-41 More about this Journal
Abstract
LF slag is formed by EAF carryover slag and slag former(such as lime, dolomite) put into the ladle during the tapping molten metal. After LF process, continuous casting is started when molten steel is sent from ladle to tundish through bottom nozzle of ladle. Conventionally, remained molten slag and steel in ladle are poured into a slag port and they are transferred to a slag yard and then recycled. In this study, we investigated about recycling of molten LF slag residue(including Fe residue to reuse) which is made in steelmaking process. As a result, lime usage was decreased about 2.2~3.2 kg/steel-ton and also molten steel yield rate was increased about 0.3 ~ 0.5 percent point.
Keywords
LF slag; Molten slag; Fe recovery; Slag recycling;
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  • Reference
1 A. Dahlin, A. Tilliander, J. Eriksson and P. G. Jonsson, 2012 : Influence of ladle slag additions on BOF process performance, Ironmaking & Steelmaking, Vol. 39, No. 5, pp. 378-385.   DOI
2 Korean Patent, 2002 : "Sulfur reduction method of molten slag in electirc arc furnace steelmaking process", Pat. No. 2002-0047574.
3 Jong Yeong Hyun, Hyung Suk Kim, Kang Ho Shin, Dong Sung Cho, 1994 : A Study on the recovery of a metal from the steelmaking E.A.F slag, Proceedings of the International Symposium on Resource Conservation and Environmental Technologies in Metallurgical Industries, pp. 526-532.
4 Ho-Snag Sohn, Jeong-Sik Kim and Zhao-Ping Chen, 1999 : Effect of Iron Compositions on Reduction Kinetics of Manganese Oxide in CaO-$SiO_{2}$-MgOsat.-FeO-MnO Slag, Vol. 37, No. 7, pp. 872-877.
5 Yoshio Shimokawa, 1948 : Desulfurization of Basic Open- Hearth Steel, The Iron and Steel Institute of Japan, pp. 46-51.