Development on sintering technologies with high proportion of magnetite concentrates
ZHOU Ming-shun1, WANG Yi-dong2, ZHAO Dong-ming3, HAN Hong-liang4,LI Xian-chun5, LU Li-ming4
1. Iron and Steel Research Institute, Ansteel Group Corporation, Anshan 114009, Liaoning, China;
2. Ansteel Group Corporation, Anshan 114021, Liaoning, China;
3. Iron-making Plant, Angang SteelCo., Ltd., Anshan 114009, Liaoning, China;
4. CSIRO Mineral Resources, Queensland 4069, Australia;
5. School of Chemical Engineering, University of Science and Technology, Anshan 114051, Liaoning, China
Abstract:Due to the depletion of reserves of traditional high-grade iron ore,the ore resources have changed drastically from hematite to complicated and comprehensive ore types. However,the level of impurities and the loss on ignition in some kinds of iron ores are relatively higher,and more iron ore fines in the ores,which have significant impacts on the sinter quality and sintering performance,including Fe-grade,sinter strength,and solid fuel consumption. Magnetite concentrate is typically high in Fe grade and releases extra heat when oxidized to hematite. This will not only improve the sinter quality but also have a beneficial impact on the fuel consumption of the sintering process. But,most of the concentrates available are very fine,which will negatively impact the green bed permeability and consequently the productivity of the sintering process. The sintering characteristics of magnetite concentrates was discussed firstly,and then reviews and comments on the recent technological advances in sintering with high proportions of magnetite concentrate,including additive technology,pre-treatment technology,multi-sintering technology,gas fuel injection technology,double layers of pre-sintering technology,etc. In order to obtain the full advantage of magnetite,the permeability and chemical reactions in the sintering bed were reviewed,which can give theoretical guidance and technology support for the application of 100% and high proportion magnetite in the sintering process.
周明顺, 王义栋, 赵东明, 韩宏亮, 李先春, 陆利明. 高配比磁铁精矿烧结技术的研究进展[J]. 钢铁, 2020, 55(5): 1-9.
ZHOU Ming-shun, WANG Yi-dong, ZHAO Dong-ming, HAN Hong-liang,LI Xian-chun, LU Li-ming. Development on sintering technologies with high proportion of magnetite concentrates. Iron and Steel, 2020, 55(5): 1-9.
[1] 孙正汉,黄晓丽,丁跃华,等. B2O3对含钛高炉渣中钙钛矿相及渣铁分离的影响[J]. 钢铁,2018,53(2):73. (SUN Zheng-han,HUANG Xiao-li,DING Yue-hua,et al. Effect of B2O3 on separation of perovskite and slag in Ti-bearing blast furnace slag[J]. Iron and Steel,2018,53(2):73.) [2] 刘承鑫,余俊杰,张泽强,等. 润磨对人工磁铁精矿球团性能的影响[J]. 钢铁,2018,53(1):17. (LIU Cheng-xin,YU Jun-jie,ZHANG Ze-qiang,et al. Influence of damp milling on properties of artificial magnetite pellets[J]. Iron and Steel,2018,53(1):17.) [3] 周明顺,王义栋,赵东明,等. 高硫铁精矿配比对球团工艺参数及性能的影响[J]. 钢铁,2018,53(5):11. (ZHOU Ming-shun,WANG Yi-dong,ZHAO Dong-ming,et al. Effects of adding high-sulfur magnetite concentrate on pelletizing parameters and performance[J]. Iron and Steel,2018,53(5):11.) [4] 宋鹤锴,吴胜利,周恒. 铁矿烧结黏结相气孔率影响因素分析[J]. 中国冶金,2019,29(5):15. (SONG He-kai,WU Sheng-li,ZHOU Heng. Analysis of influence factors of porosity of sintered bonding phase in iron ore[J]. China Metallurgy,2019,29(5):15.) [5] 朱苗勇.现代冶金工艺学——钢铁冶金卷[M].北京:冶金工业出版社,2016.(ZHU Miao-yong. Modern Metallurgical Technology—Ferrous Metallurgical [M]. Beijing:Metallurgical Industry Press,2016.) [6] 姜涛.铁矿造块学[M].长沙:中南大学出版社,2016.(JIANG Tao. Principle and Technology of Agglomeration of Iron Ores[M]. Changsha:Central South University Press,2016.) [7] 韩志国.细磨磁铁精矿烧结成矿机理研究及应用[D].长沙:中南大学,2005.(HAN Zhi-guo. Study and Application of Sintering Mineralization Mechanism of Fine Grinding Magnetite[D]. Changsha:Central South University,2005.) [8] 张建良,刘东辉,刘浩,等.核矿石对低钛型钒钛磁铁精粉烧结制粒的影响[J].钢铁,2017,52(9):16.(ZHANG Jian-liang,LIU Dong-hui,LIU Hao,et al. Effects of nuclei ores on granulation behavior of low-titanium magnetite concentrate[J]. Iron and Steel,2017,52(9):16.) [9] YANG L X. Sintering fundamentals of magnetite alone and blended with hematite and hematite/goethite ores[J]. ISIJ International,2005,45(4):469. [10] Yang L X,Matthews E. Oxidation and sintering of magnetite ore under oxidising conditions[J]. ISIJ International,1997,37(9):854. [11] Ooi T C,Hardwick S C,Zhu D Q,et al. Sintering performance of magnetite-hematite-goethite and hematite-goethite iron ore blends and microstructure of products of sintering[J]. Mineral Processing and Extractive Metallurgy Review,2014,35:266. [12] Yang L X,Witcha D. Sintering of blends containing magnetite concentrate and hematite ore or/and goethite ores[J]. ISIJ International,1998,38(10):1069. [13] 蒋大军.中钛型磁铁精矿对烧结性能影响的试验[J].钢铁,2018,53(5):18.(JIANG Da-jun. Experiment on influence of sintering properties with a medium titanium magnetite concentrate[J]. Iron and Steel,2018,53(5):18.) [14] 李建,毛晓明,彭新.微观性能对烧结矿低温还原粉化的影响[J].钢铁,2018,53(8):15.(LI Jian,MAO Xiao-ming,PENG Xin. Effect of micro-characteristics on reduction degradation index of sinter[J]. Iron and Steel,2018,53(8):15.) [15] Clout J M F,Manuel J R. Fundamental investigations of differences in bonding mechanisms in iron ore sinter formed from magnetite concentrates and hematite ores[J]. Powder Technology,2003,130:393. [16] Jeon J W,Kim S W,Jung S M. Utilization of magnetite concentrate as an additive in adhering fines of quasi-particle and its effect on assimilation behaviour[J]. ISIJ International,2015,55(3):513. [17] Yang L X,Matthews E. Sintering reactions of magnetite concentrates under various atmospheres[J]. ISIJ International,1997,37(11):1057. [18] Okada T,Okazaki J,Nakano M,et al. Influence of polymer dispersant on the granulation of raw materials for sintering process[J]. Tetsu-to-Hagané,2006,12:735. [19] Kawachi S,Kasama S. Quantitative effect of micro-particles in iron ore on the optimum granulation moisture[J]. ISIJ International,2009,49(5):637. [20] Kawachi S,Kasama S. Effect of micro-particles in iron ore on the granule growth and strength[J]. ISIJ International,2011,51(7):1057. [21] 朱德庆,王志远,潘建,等.润磨强化镜铁精粉烧结特性的研究[J].钢铁,2007,42(1):12.(ZHU De-qing,WANG Zhi-yuan,PAN Jiang,et al. Improvement of sintering behaviors of Brazilian specularite concentrate by damp milling[J]. Iron and Steel,2007,42(1):12.) [22] FAN J J,QIU G Z,JIANG T,et al. Improvement of sinter properties with ultra fine-sized iron concentrate by HPRG[J]. Journal of Iron and Steel Research,International,2013,20(9):47. [23] Mousa E A,Babich A,Senk D. A novel approach for utilization of ultra-fines iron ore in sintering process[J]. Steel Research International,2015,86(11):1350. [24] Umadevi T,Deodhar A V,Mahapatra P C,et al. Influence of coating granulation process on iron ore sinter quality and productivity[J]. Steel Research International,2010,81(9):716. [25] Haga T,Ohshio A,Nakamura K,et al. Control technique of the melting reaction in sintering process by the fine part selective granulation of clayish iron ores[J]. Tetsu-to-Hagan,1997,83:103. [26] JIANG T,LI G H,WANG H T,et al. Composite agglomeration process (CAP) for preparing blast furnace burden [J]. Ironmaking and Steelmaking,2010,37(1):1. [27] LU L M. Iron Ore:Mineralogy,Processing and Environmental Sustainability[M]. Cambridge:Woodhead Publishing,2015. [28] Kamijo C,Hara M,Yamaguchi Y,et al. Technology for productivity improvement of sintering based on designing of composite granulation and bed structure of sinter mixture[J]. ISIJ International,2013,53(9):1497. [29] HAN H L,WU S L,MA L W,et al. Fundamental research on sintering technology with super deep bed achieving energy saving and reduction of emissions[J]. Revue de Metallurgie,2012,109:249. [30] 李文琦.优化烧结料层透气性和温度场的研究[D].长沙:中南大学,2012.(LI Wen-qi. Study on Optimizing Permeability and Temperature Profile of Sintering Bed[D]. Changsha:Central South University,2012.) [31] Iwami Y,Yamamoto T,Higuchi T,et al. Effect of oxygen enrichment on mineral texture in sintered ore with gaseous fuel injection[J]. ISIJ International,2015,55(11):2350. [32] 翟立委,周明顺,唐复平,等.一种采用预烧结的超厚料层复合式配料方法:中国,ZL 201610815437. X[P].2017-01-18.(ZHAI Li-wei,ZHOU Ming-shun,TANG Fu-ping,et al. The Invention Relates to a Superthick Material Layer Compound Batching Method Using Presintering:China,ZL 201610815437.X[P].2017-01-18.) [33] 唐复平,周明顺,王义栋,等.一种采用预烧结的超厚层烧结方法:中国,ZL 201610144762.8[P].2017-01-18.(TANG Fu-ping,ZHOU Ming-shun,WANG Yi-dong,et al. The Invention Relates to an Ultra-Thick Layer Sintering Method Using Presintering:China,ZL 201610144762.8[P].2017-01-18.)