| Basic characteristics of Australian iron ore concentrate and its effects on sinter properties during the high-limonite sintering process |
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| 作者姓名： | Dong-hui Liu Hao Liu Jian-liang Zhang Zheng-jian Liu Xun Xue Guang-wei Wang Qing-feng Kang |
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| 作者单位： | School of Metallurgy and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China |
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| 基金项目： | This work was financially supported by the National Basic Research Program of China;the National Natural Science Foundation of China |
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| 摘 要： | The basic characteristics of Australian iron ore concentrate (Ore-A) and its effects on sinter properties during a high-limonite sintering process were studied using micro-sinter and sinter pot methods. The results show that the Ore-A exhibits good granulation properties, strong liquid flow capability, high bonding phase strength and crystal strength, but poor assimilability. With increasing Ore-A ratio, the tumbler index and the reduction index (RI) of the sinter first increase and then decrease, whereas the softening interval (?T) and the softening start temperature (T10%) of the sinter exhibit the opposite behavior; the reduction degradation index (RDI+3.15) of the sinter increases linearly, but the sinter yield exhibits no obvious effects. With increasing Ore-A ratio, the distribution and crystallization of the minerals are improved, the main bonding phase first changes from silico-ferrite of calcium and aluminum (SFCA) to kirschsteinite, silicate, and SFCA and then transforms to 2CaO·SiO2 and SFCA. Given the utilization of Ore-A and the improvement of the sinter properties, the Ore-A ratio in the high-limonite sintering process is suggested to be controlled at approximately 6wt%.
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| 关 键 词： | iron ore concentrate limonite basic characteristics sinter properties sintering process |
Basic characteristics of Australian iron ore concentrate and its effects on sinter properties during the high-limonite sintering process |
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| Dong-hui Liu,Hao Liu,Jian-liang Zhang,Zheng-jian Liu,Xun Xue,Guang-wei Wang,Qing-feng Kang.Basic characteristics of Australian iron ore concentrate and its effects on sinter properties during the high-limonite sintering process[J].International Journal of Minerals,Metallurgy and Materials,2017,24(9):991-998. |
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| Authors: | Dong-hui Liu Hao Liu Jian-liang Zhang Zheng-jian Liu Xun Xue Guang-wei Wang Qing-feng Kang |
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| Affiliation: | 1.School of Metallurgy and Ecological Engineering,University of Science and Technology Beijing,Beijing,China;2.Xuanhua Iron & Steel Group Co. Ltd.,Xuanhua,China;3.Beijing Shenwu Environment & Energy Technology Co., Ltd.,Beijing,China |
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| Abstract: | The basic characteristics of Australian iron ore concentrate (Ore-A) and its effects on sinter properties during a high-limonite sintering process were studied using micro-sinter and sinter pot methods. The results show that the Ore-A exhibits good granulation properties, strong liquid flow capability, high bonding phase strength and crystal strength, but poor assimilability. With increasing Ore-A ratio, the tumbler index and the reduction index (RI) of the sinter first increase and then decrease, whereas the softening interval (ΔT) and the softening start temperature (T 10%) of the sinter exhibit the opposite behavior; the reduction degradation index (RDI+3.15) of the sinter increases linearly, but the sinter yield exhibits no obvious effects. With increasing Ore-A ratio, the distribution and crystallization of the minerals are improved, the main bonding phase first changes from silico-ferrite of calcium and aluminum (SFCA) to kirschsteinite, silicate, and SFCA and then transforms to 2CaO·SiO2 and SFCA. Given the utilization of Ore-A and the improvement of the sinter properties, the Ore-A ratio in the high-limonite sintering process is suggested to be controlled at approximately 6wt%. |
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