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Effect of MgO Doping on Phase Composition and Structure of Molten Mixture of Steel Slag and Blast Furnace Slag
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Shuai HAO, Guoping LUO, Yinsheng CHEN, Yifan CHAI, Shengli AN, Wei SONG
Mining and Metallurgical Engineering | 2023, 43(1) : 95 - 98
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Mining and Metallurgical Engineering | 2023, 43(1): 95-98
• METALLURGY •
Effect of MgO Doping on Phase Composition and Structure of Molten Mixture of Steel Slag and Blast Furnace Slag
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Shuai HAO, Guoping LUO, Yinsheng CHEN, Yifan CHAI, Shengli AN, Wei SONG
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  • School of Materials and Metallurgy(School of Rare Earth), Inner Mongolia University of Science and Technology, Baotou 014010, Inner Mongolia, China
Published: 2023-02-01 doi: 10.3969/j.issn.0253-6099.2023.01.021
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The phase composition and morphology of a molten mixture of steel slag and furnace slag prepared at a high temperature was analyzed by X-ray diffraction and SEM-EDS scanning electron microscope to investigate the effect of MgO doping. The results show that MgO doping can effectively inhibit the formation of MgFe2O4 phase and non-gel Ca2Al2SiO7 phase, and promote the formation of MgFeAlO4 phase, thus increasing the melting point of the mixed slag. It is found that the mixed slag after doping 2% MgO presents a layered structure on its cross section. The inner layer has an increased proportion of MgFeAlO4 phase, with uniform and fine pores; and the MgFeAlO4 phase is wrapped by MgFe2O4 spinel with layered structure in the middle part; and the outer layer has Ca2Al2SiO7 phase with uniform pores and moderate density. The mixed slag with such kind of structure is suitable to be used as the filter material for removing heavy metal ions.

steel slag  /  blast furnace slag  /  MgO  /  mixture of blast furnace slag and steel slag molten at high temperature  /  mixed slag  /  preparation at high temperature  /  filter material
Shuai HAO, Guoping LUO, Yinsheng CHEN, Yifan CHAI, Shengli AN, Wei SONG. Effect of MgO Doping on Phase Composition and Structure of Molten Mixture of Steel Slag and Blast Furnace Slag[J]. Mining and Metallurgical Engineering, 2023 , 43 (1) : 95 -98 . DOI: 10.3969/j.issn.0253-6099.2023.01.021
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doi: 10.3969/j.issn.0253-6099.2023.01.021
  • Receive Date：2022-08-02
  • Online Date：2026-03-05
  • Published：2023-02-01
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  • Received：2022-08-02
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    School of Materials and Metallurgy(School of Rare Earth), Inner Mongolia University of Science and Technology, Baotou 014010, Inner Mongolia, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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