1.School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China;2.Technological Center, Shijiazhuang Iron Steel Co., Ltd., Shijiazhuang 050031, Hebei, China
Abstract：The chemical composition of high basicity sinter was simulated to investigate the effects of magnesia content on calcium ferrite formation in Fe2O3SiO2CaOAl2O3MgO system in air atmosphere at 1220 ℃ by determining the amount of calcium ferrite formation from XRDQAMS method, by observing the microstructure from optical microscopy, and so on. The experimental results show that the amount of calcium ferrite formation for samples with R=2.0 and noalumina increases markedly with increase of magnesia content, however the amount of calcium ferrite formation for samples at 2.5% alumina and R=2.0 increases smaller with increase of magnesia content, which is considered that effect of magnesia on calcium ferrite formation was changed after adding alumina into the samples. Secondly, with increase of basicity from 1.8 to 2.3 ，the amount of calcium ferrite formation in samples increase, but the effect of magnesia on calcium ferrite formation become smaller. The columnar type transfers to acicular type for the shape of calcium ferrite with increase of magnesia content before addition of alumina, however the effect of magnesia content become smaller after added 2.5% alumina.
郭兴敏;张俊;李春增;朱利;赵金龙. 准化学平衡条件下MgO对多元铁酸钙生成的影响[J]. 钢铁, 2009, 44(4): 16-0.
GUO Xingmin;ZHANG Jun;LI Chunzeng;ZHU Li;ZHAO Jinlong. Effect of Magnesia on Formation of Calcium Ferrites Under the QuasiChemical Equilibrium. Iron and Steel, 2009, 44(4): 16-0.
2009, Vol. 44 
