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http://dx.doi.org/10.3365/KJMM.2012.50.10.753

Study on the Reduction of Molten EAF Slag  

Joo, Seong-Woong (Division of Material Science and Engineering, Inha University)
Shin, Jong-Dae (Division of Material Science and Engineering, Inha University)
Shin, Dong-Kyung (Division of Material Science and Engineering, Inha University)
Hong, Seong-Hun (Division of Material Science and Engineering, Inha University)
Ki, Jun-Sung (Production Engineering Team, Hyundai Steel)
Hwang, Jin-Il (Production Engineering Team, Hyundai Steel)
You, Byung-Don (Division of Material Science and Engineering, Inha University)
Publication Information
Korean Journal of Metals and Materials / v.50, no.10, 2012 , pp. 753-761 More about this Journal
Abstract
The reduction behavior of low level oxides such as (T.Fe), (MnO) and ($P_2O_5$) in molten EAF slag was investigated using commercial reductants. In an air atmosphere, the slag volume increased and the reduction rate of the slag was very low due to the oxidation loss of reductants by oxygen in the air. The reduction rate of the slag was also low when a commercial reductant was used alone in an Ar gas atmosphere. The reason is probably because the material transfer through the interface between the slag and reductant is difficult due to the formation of high melting point oxide. When reductants were mixed with burnt lime in order to form low melting point reaction products, the reduction rate of the slag increased up to the range of 45-70%. By using the mixtures of reductants and burnt lime so as to form a low melting point slag at the reaction end, the reduction rate of the slag was improved up to 60-85%.
Keywords
slag; oxides; reduction; reduction rate; reductant;
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  • Reference
1 R. Y. Ryu, J. I. Kim, B. D. You, and J. J. Pak, ISS Steelmaking Proc., 79 (1995).
2 S. H. Seok and D. J. Min, J. Kor. Inst. Met. & Mater. 45, 360 (2007).
3 H. S. Na, Y. W. Yoon, and G. L. Yoon, Korea Geo- Environmental Society fall Conference, 544 (2010).
4 D. J. Min, W. S. Chung, and J. M. Baek, J. Kor. Inst. Met. & Mater. 35, 237 (1997).
5 C. H. Wi, S. M. Kim, K. W. Yoon, B. D. You, D. S. Kim, and H. J. Choi, J. Kor. Inst. Met. & Mater. 45, 368 (2007).
6 K. C. Mills, Slag Atlas, 2nd Edition, pp.362-376, Verlag Stahleisen GmbH (1995).
7 Y. J. Cha, T. H. Kim, B. D. You, J. W. Han, E. S. Choi, and D. W. Lee, J. Kor. Inst. Met. & Mater. 40, 237 (2002).
8 M. Kowalski, P. J. Spencer, and D. Neuschutz, Slag Atlas, 2nd Edition, pp.99-154, Verlag Stahleisen GmbH (1995).