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Analysis of Vanadium-Bearing Titanomagnetite Sintering Process by dissection of Sintering bed

Journal of Iron and Steel Research International 2011年第6期18卷 8-15,36页

作者： BAI Yong-qiang CHENG Shu-sen BAI Yan-ming School of Metallurgical and Ecological Engineering University of Science and Technology Beijing Beijing100083 Chinas Chenggang Company Hebei Iron and Steel Co Ltd Chengde 062001 Hebei China

Many problems appear in the sintering process of vanadium-bearing titanomagnetite, such as high energy consumption and low productivity; simer quality is also very poor for its low tumble strength and high reduction deg- radation. Sinter productivity and quality are dominated by bed permeability and mineralogy structure, which are highly influenced by the thermal state of sintering bed, so the sintering process of titanomagnetite is researched by bed dissection in this work. Temperature evolution curves of sinter materials were measured, and the results show that melting duration, peak temperature duration and sintering temperature of different layers differ greatly from each other; flame front speed and vertical sintering speed of bed lower region are much smaller than those of bed up- per region. Simultaneously, sinter samples were collected from different layers, and their mineralogy characteristics are analyzed; sinters from bed lower region have poor mineralogy structure, and the amounts of perovskite and dieM- cium silicate increase intensively, which are bad for sinter strength and reduction degradation property. Measures are proposed to improve the quality and productivity of titanomagnetite sinter.

关键词： sintering vanadium hearing titanomagnetite thermal state bed dissection mineralogy characteristic

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