Liu Chaoqing, Liu Ran, Lü Qing, Liu Xiaojie, Zhang Xinyuan. Study on Mineralogical Structure of Jidong Magnetite Pellets[J]. IRON STEEL VANADIUM TITANIUM, 2014, 35(6): 124-129. doi: 10.7513/j.issn.1004-7638.2014.06.024
Citation:
Liu Chaoqing, Liu Ran, Lü Qing, Liu Xiaojie, Zhang Xinyuan. Study on Mineralogical Structure of Jidong Magnetite Pellets[J]. IRON STEEL VANADIUM TITANIUM, 2014, 35(6): 124-129. doi: 10.7513/j.issn.1004-7638.2014.06.024
Liu Chaoqing, Liu Ran, Lü Qing, Liu Xiaojie, Zhang Xinyuan. Study on Mineralogical Structure of Jidong Magnetite Pellets[J]. IRON STEEL VANADIUM TITANIUM, 2014, 35(6): 124-129. doi: 10.7513/j.issn.1004-7638.2014.06.024
Citation:
Liu Chaoqing, Liu Ran, Lü Qing, Liu Xiaojie, Zhang Xinyuan. Study on Mineralogical Structure of Jidong Magnetite Pellets[J]. IRON STEEL VANADIUM TITANIUM, 2014, 35(6): 124-129. doi: 10.7513/j.issn.1004-7638.2014.06.024
1. College of Metallurgy & Energy, Hebei United University, Key Laboratory for Advanced Metallurgy Technology, Ministry of Education, Tangshan 063009, Hebei, China;
2. School of Materials & Metallurgy, Northeastern University, Shenyang 110819, Liaoning, China
The mineralogical structure of Jidong magnetite pellets was systematically studied.The results indicated that main crystal phase of Jidong magnetite pellets was hematite,and both roasting and prehea-ting process imposed effect on the microscopic characteristics of the pellets.When preheat temperature is between 950℃ to 1 000℃ and the preheating time is 20 min,Fe3O4 in pellets has been substantially oxidized,and Fe2O3 significantly recrystallized and grain begun to gather.When the roasting temperature excesses 1 300℃ Fe3O4 in pellets began decomposition.,which implies suitable roasting temperature lower than 1 300℃.The combination of roasting temperature at 1 250~1 275℃ and roasting time longer than 20 min.produce Jidong pellets with compressive strength greater than 2 000 N per.pellet.
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