Zhang Qi, Liu Ran, Liu Chaoqing, Li Yanjiang, Li Jianpeng, Lü Qing. Effect of Hydrogen-rich on Reduction of Low Titanium Pellets in the Lumpy Zone[J]. IRON STEEL VANADIUM TITANIUM, 2016, 37(5): 96-101. doi: 10.7513/j.issn.1004-7638.2016.05.018
Citation:
Zhang Qi, Liu Ran, Liu Chaoqing, Li Yanjiang, Li Jianpeng, Lü Qing. Effect of Hydrogen-rich on Reduction of Low Titanium Pellets in the Lumpy Zone[J]. IRON STEEL VANADIUM TITANIUM, 2016, 37(5): 96-101. doi: 10.7513/j.issn.1004-7638.2016.05.018
Zhang Qi, Liu Ran, Liu Chaoqing, Li Yanjiang, Li Jianpeng, Lü Qing. Effect of Hydrogen-rich on Reduction of Low Titanium Pellets in the Lumpy Zone[J]. IRON STEEL VANADIUM TITANIUM, 2016, 37(5): 96-101. doi: 10.7513/j.issn.1004-7638.2016.05.018
Citation:
Zhang Qi, Liu Ran, Liu Chaoqing, Li Yanjiang, Li Jianpeng, Lü Qing. Effect of Hydrogen-rich on Reduction of Low Titanium Pellets in the Lumpy Zone[J]. IRON STEEL VANADIUM TITANIUM, 2016, 37(5): 96-101. doi: 10.7513/j.issn.1004-7638.2016.05.018
College of Metallurgy & Energy, Ministry of Education Key Laboratory of Modern Metallurgy Technology, North China University of Science and Technology, Tangshan 063009, Hebei, China
Based on the blast furnace gas-injection,the effects of different H2 contents and temperatures on the reduction of ore in the low temperature lumpy zone are studied.The result shows that,when the temperature of reduction is 900℃,the reduction rate increases with an increase in the H2 content.When H2 content is fixed,the reduction rate increases with temperature.The main phases are Fe and small amount of(Mg,Fe)(Fe,Ti)O3,(MgAl2O4),(Mg2SiO4) after reduction.With increasing temperature,the(Mg,Fe)(Fe,Ti)O3 disappears firstly,then the(MgAl2O4) and(Mg2SiO4) decreases,and reducing capacity of H2 significantly improves,the oxygen loss rate of iron ore increases,the resulted iron aggregates and some small pores would appear in the pellets.
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