Optimization of the refining slag composition of SPHC steel with low silicon low carbon

LIAO Hang; ZHU Li-bin; YANG Shu-feng; LI Jing-she

doi:10.13374/j.issn2095-9389.2016.s1.029

Volume 38 Issue S1

Jul. 2021

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LIAO Hang, ZHU Li-bin, YANG Shu-feng, LI Jing-she. Optimization of the refining slag composition of SPHC steel with low silicon low carbon[J]. Chinese Journal of Engineering, 2016, 38(S1): 175-180. doi: 10.13374/j.issn2095-9389.2016.s1.029

Citation:

LIAO Hang, ZHU Li-bin, YANG Shu-feng, LI Jing-she. Optimization of the refining slag composition of SPHC steel with low silicon low carbon[J]. Chinese Journal of Engineering, 2016, 38(S1): 175-180. doi: 10.13374/j.issn2095-9389.2016.s1.029

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Optimization of the refining slag composition of SPHC steel with low silicon low carbon

doi: 10.13374/j.issn2095-9389.2016.s1.029

LIAO Hang^1,2,
ZHU Li-bin^1,2,
YANG Shu-feng^{1,2
,
,},
LI Jing-she^1,2

1. State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, China;
2. School of Metallurgy and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China

Received Date: 2016-01-12
Available Online: 2021-07-29

Abstract

Abstract

To improve the effect of LF refining on SPHC steel, thermodynamics software FactSage was used to analyze the physi-cochemical properties of the LF refining slag system, and then the corresponding optimization scheme was verified by industrial verifi-cation. Experimental results show that at the end of LF refining, the total oxygen T[O] in steel decreases from 24×10^-6 to 20×10^-6, the total removal rate of micro inclusions increases from 56.67% to 71.54%, and the amount of large inclusions decreases to 42.45 mg/10 kg from 85.42 mg/10 kg by the optimization of the LF refining slag system.
- SPHC steel,
- refining slag,
- optimization,
- non-metallic inclusions