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A quantitative investigation on consolidation of titanium-containing pellets during roasting process

Journal of Iron and Steel Research International 2023年第1期30卷 40-50页

作者： Yao-zu Wang Jian-liang Zhang Zhi-hui Chen Zheng-jian Liu Chen-yang Xu Yu-meng Li Li-ming Ma Institute of Artificial Intelligence University of Science and Technology BeijingBeijing 100083China School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing 100083China College of Artificial Intelligence North China University of Science and TechnologyTangshan 063210HebeiChina

The measurement method and quantitative indexes of iron ore consolidation characteristic temperature(CCT)during roasting,including consolidation starting temperature,highest consolidation rate temperature,and consolidation termination temperature,were improved based on previous *** mineral properties of v-ti magnetite(Panzhihua)were analyzed,and the CCT of v-ti magnetite was *** investigate the effect of mineral types on CCT,a series of trials were carried out by using various ores,including high-grade magnetite ore,high silicon iron ore,and v-ti magnetite *** greatest shrinkage of v-ti magnetite was 6.7%,the consolidation starting temperature was 991℃,and the termination temperature was 1384℃.The results of X-ray diffraction analysis indicated that the v-ti magnetite ore was composed of titanomagnetite,peridotite,and other minerals,which is more complicated than conventional *** a result,the temperature at the maximum rate of consolidation and the temperature at the termination of consolidation are the ***_(3) and MgFe_(2)O_(4) in v-ti magnetite may inhibit the creation of sinter necks between hematite *** phase occurs inside the pellet when the temperature surpasses 1250℃,which may accelerate particle growth and the formation of a sintering neck within the pellets.

关键词： Consolidation index Iron ore pellet Mineralogical characteristics v-ti magnetite

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