Simulation on influence of MgO content on liquid phase in CaO-SiO2-Al2O3-MgO slag

LIN Teng-chang; ZHU Rong; WANG Cheng-jie; LI Chao; LI Ming-gang

doi:10.13374/j.issn1001-053x.2014.s1.029

Volume 36 Issue S1

Jul. 2021

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LIN Teng-chang, ZHU Rong, WANG Cheng-jie, LI Chao, LI Ming-gang. Simulation on influence of MgO content on liquid phase in CaO-SiO2-Al2O3-MgO slag[J]. Chinese Journal of Engineering, 2014, 36(S1): 156-161. doi: 10.13374/j.issn1001-053x.2014.s1.029

Citation:

LIN Teng-chang, ZHU Rong, WANG Cheng-jie, LI Chao, LI Ming-gang. Simulation on influence of MgO content on liquid phase in CaO-SiO₂-Al₂O₃-MgO slag[J]. Chinese Journal of Engineering, 2014, 36(S1): 156-161. doi: 10.13374/j.issn1001-053x.2014.s1.029

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Simulation on influence of MgO content on liquid phase in CaO-SiO₂-Al₂O₃-MgO slag

doi: 10.13374/j.issn1001-053x.2014.s1.029

LIN Teng-chang^{1,2
,
,},
ZHU Rong^1,2,
WANG Cheng-jie^1,2,
LI Chao^1,2,
LI Ming-gang^1,2

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

Received Date: 2013-11-20
Available Online: 2021-07-19

Abstract

Abstract

The influence of MgO content on liquid phase in CaO-SiO₂-Al₂O₃-MgO slag system was simulated by Factsage software.The results show that,with increase of MgO content in CaO-SiO₂-Al₂O₃-MgO slag,the low melting point liquid area moves forward ‘low CaO high SiO₂’ area. 1500℃ liquid area ratio of phase diagram rises from 25.05% of 0% MgO(mass fraction) to 52.69% of 9% MgO,and drops to 46.70% of 15% MgO. 1400℃ liquid area ratio of phase diagram rises from 14.41% of 3% MgO to 34.39%of 11% MgO,and drops to 31.04% of 15% MgO. 1300℃ liquid area ratio of phase diagram rises from 5.57% of 5% MgO to 11.02% of 14% MgO,and drops to 10.05% of 15% MgO. 1200℃ liquid area ratio of phase diagram is 0 when MgO content during 0 to 6%,and rises from 0.88% of 7% MgO to 1.22% of 11% MgO,then changes to 0 when MgO content during 13% to 15%.Simulation results provide an effective guidance for composition selection of steelmaking slag with the CaO-SiO₂-Al₂O₃-MgO components as the basic configuration.
- CaO-SiO₂-Al₂O₃-MgO slag,
- MgO,
- liquid region