Pan Xiangyang, Long Yue, Li Shenzi, Ma Baoliang, Du Peipei. Effect of MgO/Al2O3 on Metallurgical Properties of Sinter[J]. IRON STEEL VANADIUM TITANIUM, 2019, 40(4): 100-105. doi: 10.7513/j.issn.1004-7638.2019.04.019
Citation:
Pan Xiangyang, Long Yue, Li Shenzi, Ma Baoliang, Du Peipei. Effect of MgO/Al2O3 on Metallurgical Properties of Sinter[J]. IRON STEEL VANADIUM TITANIUM, 2019, 40(4): 100-105. doi: 10.7513/j.issn.1004-7638.2019.04.019
Pan Xiangyang, Long Yue, Li Shenzi, Ma Baoliang, Du Peipei. Effect of MgO/Al2O3 on Metallurgical Properties of Sinter[J]. IRON STEEL VANADIUM TITANIUM, 2019, 40(4): 100-105. doi: 10.7513/j.issn.1004-7638.2019.04.019
Citation:
Pan Xiangyang, Long Yue, Li Shenzi, Ma Baoliang, Du Peipei. Effect of MgO/Al2O3 on Metallurgical Properties of Sinter[J]. IRON STEEL VANADIUM TITANIUM, 2019, 40(4): 100-105. doi: 10.7513/j.issn.1004-7638.2019.04.019
1. School of Metallurgy and Energy, North China University of Science and Technology, Tangshan 063210, Hebei, China;
2. Modern Metallurgical Technique Key Laboratory of Ministry of Education, North China University of Science and Technology, Tangshan 063210, Hebei, China;
3. Xingtai Iron and Steel Co., Ltd., Xingtai 054027, Hebei, China
The effect of MgO/Al2O3 on the metallurgical properties of sinter was studied by laboratory sintering cup test device.The effects of MgO/Al2O3 on sinter strength,particle size composition,RDI and RI were studied in the range of 0.8 to 1.2.Microstructure and mineral composition of sinter were analyzed by metallographic microscope and X-ray diffraction.With the increase of MgO/Al2O3,the strength of sinter increases first and then decreases.When MgO/Al2O3 is 1.0,the strength is the best,and the proportion of 10 to 40 mm particle size is 58.85%.With the increase of MgO/Al2O3 from 0.8 to 1.2,the RDI of sinter is improved and the reducibility is worse.When MgO/Al2O3 is in the range of 0.9 to 1.0,the micro-morphology and mineral composition of pellets are better.Within this range,hematite and composite calcium ferrite have more quantity and better strength.When sintering with imported ore and local magnetite,MgO/Al2O3 is controlled in the range of 0.9 to 1.0 in order to obtain better micro-morphology and metallurgical properties.
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