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Preparation of blast furnace burdens by composite agglomeration process: effect of distribution of magnetite and hematite concentrates in pelletized and matrix feed |
Fo‑quan Gu 1, Yuan‑bo Zhang 1, Guang‑hui Li 1, Qiang Zhong 1, Jun Luo 1, Zi‑jian Su 1, Ming‑jun Rao 1, Zhi‑wei Peng 1, Tao Jiang 1 |
1 School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, Hunan, China |
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Abstract Effect of distribution of iron concentrates between pelletized and matrix feed on the preparation of blast furnace burdens from two different kinds of fine iron concentrates (magnetite and hematite) by composite agglomeration process (CAP) was explored. It was found that when the mass ratio of iron concentrate A (magnetite) to iron concentrate B (hematite) in the mixed feed was constant, the proportion of iron concentrate A in the pelletized and matrix feed significantly affected the quality of CAP products. Particularly, as the proportion of iron concentrate A in the pelletized feed increased from 0 to 100%, the yield decreased from 82.11% to 79.19% and the tumbler index decreased from 71.33% to 68.27%. The mineralization characterization results indicated that when 100% iron concentrate A was used as the pelletized feed, the crystallization styles of the outer layer and the inner layer of the pellet were different, and a lot of pores exist around hematite and magnetite phases in the pelletized part, with the weak connection of pelletized and matrix part, resulting in poor strength of agglomeration product.
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Cite this article: |
Fo‑quan Gu,Yuan‑bo Zhang,Guang‑hui Li, et al. Preparation of blast furnace burdens by composite agglomeration process: effect of distribution of magnetite and hematite concentrates in pelletized and matrix feed[J]. Journal of Iron and Steel Research International, 2020, 27(12): 1363-1371.
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Sheng-li Wu, Xiao-bo Zhai, Li-xin Su, Xu-dong Ma. Ore-blending optimization for Canadian iron concentrate during iron ore sintering based on high-temperature characteristics of fines and nuclei[J]. JOURNAL OF IRON AND STEEL RESEARCH,INTERNATIONAL, 2020, 27(7): 755-769. |
[3] |
Xiao-hui Fan, Yan-nan Wang, Min Gan, Zhi-yun Ji, Yang Zhou, Xu-ling Chen. Thermodynamic analysis and reaction behaviors of alkali metal elements during iron ore sintering[J]. JOURNAL OF IRON AND STEEL RESEARCH,INTERNATIONAL, 2019, 26(6): 558-566. |
[4] |
Zheng-wei Yu, Li-xin Qian, Hong-ming Long, Yi-fan Wang, Qing-min Meng, Tie-jun Chun. Determination method of high-temperature characteristics of iron-ore sintering based on n(Fe2O3)/n(CaO)[J]. JOURNAL OF IRON AND STEEL RESEARCH,INTERNATIONAL, 2019, 26(12): 1257-1264. |
[5] |
Hong-ming Long, ? Qi Shi ? Hong-liang Zhang ? Ru-fei Wei ? Tie-jun Chun ? Jia-xin Li. Application status and comparison of dioxin removal technologies for iron ore sintering process[J]. , 2018, 25(4): 357-365. |
[6] |
Yuan-dong Pei,,,Sheng-li Wu,,Shao-guo Chen,Zhi-xing Zhao,Gang An,Zheng-ming Cheng, Yao-sheng Luo. Sintering of solid waste generated in iron and steel manufacturing process in Shougang Jingtang[J]. Chinese Journal of Iron and Steel, 2017, 24(7): 697-704. |
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