Effects of basicity and temperature on mineralogy and reductionbehaviors of high-chromium vanadium-titanium magnetite sinters

来源期刊:中南大学学报(英文版)2019年第1期

论文作者:薛向欣 汤卫东 杨松陶 张立恒 黄壮 杨合

文章页码:132 - 145

Key words:basicity; high-chromium vanadium-titanium magnetite; sintering pot test; mineralogy; reduction behavior

Abstract: The effects of basicity and temperature on the reduction process of Hongge high-chromium vanadium-titanium magnetite (HCVTM) sinter were investigated in this work. The main characterization methods of X-ray fluorescence (XRF), X-ray diffraction (XRD), scanning electron microscope (SEM), and metallographic microscope were employed in this study. In this work, the reduction of HCVTM sinter with different temperature and basicity were experimented. The Fe, FeO, and TiO in reductive samples increase with increasing basicity and temperatures. The increase of basicity and temperature is favorable to the reduction of HCVTM sinter. The Fe phase has out-migration tendency to the surface of sinter while the perovskite and silicate phases have in-migration tendency to the inside of sinter. The reduction degradation index (RDI) decreases while the reduction index (RI) increases with increasing basicity. The RI increases from 67.14% to 82.09% with increasing temperature from 1073 K to 1373 K.

Cite this article as: TANG Wei-dong, YANG Song-tao, ZHANG Li-heng, HUANG Zhuang, YANG He, XUE Xiang-xin. Effects of basicity and temperature on mineralogy and reduction behaviors of high-chromium vanadium- titanium magnetite sinters [J]. Journal of Central South University, 2019, 26(1): 132–145. DOI: https://doi.org/10.1007/ s11771-019-3988-8.

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