| 有机结合剂对硬质磁铁矿球团活化及性能的影响 |
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| 作者姓名： | Cui Wang Chen-yang Xu Zheng-jian Liu Yao-zu Wang Rong-rong Wang Li-ming Ma |
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| 作者单位： | State Key Laboratory of Advanced Metallurgy,University of Science and Technology Beijing,Beijing 100083,China;School of Metallurgical and Ecological Engineering,University of Science and Technology Beijing,Beijing 100083,China;Department of Ferrous Metallurgy,RWTH Aachen University,Intzestra?e 1,52072 Aachen,Germany |
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| 摘 要： | In the ironmaking process, the addition of an organic binder to replace a portion of bentonite has the potential to improve the performance of pellets. The interaction between original bentonite (OB) and organic binder was investigated. Results indicated that the micromorphology of organic composite bentonite (OCB) became porous and the infrared difference spectrum exhibited a curved shape. In addition, the residual burning rates of OB and organic binder were determined to be 82.72% and 2.30%, respectively. Finally, the influence of OCB on the properties of pellets was investigated. The compressive strength of OCB-added green pellets (14.7 N per pellet) was better than that of OB-added pellets (10.3 N per pellet). Moreover, the range of melting temperature of OCB-added green pellets (173°C) was narrower than that of OB-added pellets (198°C). The compressive strength of OCB-added green pellets increased from 2156 to 3156 N per pellet with the increase in roasting temperature from 1200 to 1250°C.
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| 关 键 词： | ,,,,, |
Effect of organic binders on the activation and properties of indurated magnetite pellets |
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| Cui Wang,Chen-yang Xu,Zheng-jian Liu,Yao-zu Wang,Rong-rong Wang,Li-ming Ma.Effect of organic binders on the activation and properties of indurated magnetite pellets[J].International Journal of Minerals,Metallurgy and Materials,2021,28(7):1145-1152. |
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| Authors: | Cui Wang Chen-yang Xu Zheng-jian Liu Yao-zu Wang Rong-rong Wang Li-ming Ma |
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| Abstract: | In the ironmaking process, the addition of an organic binder to replace a portion of bentonite has the potential to improve the per-formance of pellets. The interaction between original bentonite (OB) and organic binder was investigated. Results indicated that the micromor-phology of organic composite bentonite (OCB) became porous and the infrared difference spectrum exhibited a curved shape. In addition, the residual burning rates of OB and organic binder were determined to be 82.72％ and 2.30％, respectively. Finally, the influence of OCB on the properties of pellets was investigated. The compressive strength of OCB-added green pellets (14.7 N per pellet) was better than that of OB-ad-ded pellets (10.3 N per pellet). Moreover, the range of melting temperature of OCB-added green pellets (173℃) was narrower than that of OB-added pellets (198℃). The compressive strength of OCB-added green pellets increased from 2156 to 3156 N per pellet with the increase in roasting temperature from 1200 to 1250℃. |
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| Keywords: | pellets organic composite bentonite softening-melting property interaction behavior |
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