留言板

尊敬的读者、作者、审稿人, 关于本刊的投稿、审稿、编辑和出版的任何问题, 您可以本页添加留言。我们将尽快给您答复。谢谢您的支持!

姓名
邮箱
手机号码
标题
留言内容
验证码
Volume 24 Issue 10
Oct.  2017
Turn off MathJax
目录
数据统计

分享

计量
  • 文章访问数:  468
  • HTML全文浏览量:  72
  • PDF下载量:  12
  • 被引次数: 0
文章导航 >  矿物冶金与材料学报（英文）  > 2017  >  24(10): 1087-1095
Yao-zu Wang, Jian-liang Zhang, Zheng-jian Liu, Ya-peng Zhang, Dong-hui Liu,  and Yi-ran Liu, Characteristics of combustion zone and evolution of mineral phases along bed height in ore sintering, Int. J. Miner. Metall. Mater., 24(2017), No. 10, pp. 1087-1095. https://doi.org/10.1007/s12613-017-1499-x
Cite this article as:
Yao-zu Wang, Jian-liang Zhang, Zheng-jian Liu, Ya-peng Zhang, Dong-hui Liu,  and Yi-ran Liu, Characteristics of combustion zone and evolution of mineral phases along bed height in ore sintering, Int. J. Miner. Metall. Mater., 24(2017), No. 10, pp. 1087-1095. https://doi.org/10.1007/s12613-017-1499-x
shu
引用本文 PDF XML SpringerLink
研究论文Open Access

Characteristics of combustion zone and evolution of mineral phases along bed height in ore sintering

  • School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China

  • Quantitative parameters of bed combustion, including the thickness of the combustion zone (TCZ), the maximum temperature of the combustion zone (MTCZ), and the bed shrinkage, were characterized through a series of sinter pot tests in transparent quartz pots. The results showed that TCZ first ascended and then descended as the sintering process proceeded. The sintering process was divided into four stages according to the variation rate of the TCZ. A "relative-coordinate" method was developed to obtain the actual reaction temperature of sinter along the height direction. With increasing the sintering temperature, the reactants transformed and entered into liquid phases. The mineral composition and microstructure of the sinter were characterized through X-ray diffraction and scanning electron microscopy-energy-dispersive X-ray spectroscopy. Liquid phases with greater Fe and Al contents were more likely to form acicular-like silico-ferrite of calcium and aluminum after crystallization because of the outward spread of Al, which led to a better fluidity of the liquid. An evolution mechanism of "solid-state reaction-liquid phases formation-crystallization" of the mineral phases is proposed.
    • Research ArticleOpen Access

    Characteristics of combustion zone and evolution of mineral phases along bed height in ore sintering

    + Author Affiliations
      Abstract
    • Quantitative parameters of bed combustion, including the thickness of the combustion zone (TCZ), the maximum temperature of the combustion zone (MTCZ), and the bed shrinkage, were characterized through a series of sinter pot tests in transparent quartz pots. The results showed that TCZ first ascended and then descended as the sintering process proceeded. The sintering process was divided into four stages according to the variation rate of the TCZ. A "relative-coordinate" method was developed to obtain the actual reaction temperature of sinter along the height direction. With increasing the sintering temperature, the reactants transformed and entered into liquid phases. The mineral composition and microstructure of the sinter were characterized through X-ray diffraction and scanning electron microscopy-energy-dispersive X-ray spectroscopy. Liquid phases with greater Fe and Al contents were more likely to form acicular-like silico-ferrite of calcium and aluminum after crystallization because of the outward spread of Al, which led to a better fluidity of the liquid. An evolution mechanism of "solid-state reaction-liquid phases formation-crystallization" of the mineral phases is proposed.
      • FullText(HTML)
    • loading
      • Supplements(0)
      • References(41)
    • [1]
      X. Gao, Development situation and trend analysis of sintering industry in China, Iron Steel, 43(2008), No. 1, p. 85.
      [2]
      H.F. Wang, Y.D. Pei, C.X. Zhang, and Z.X. Zhao, Green development of sintering/pellet procedure in China iron and steel industry, Iron Steel, 51(2016), No. 1, p. 1.
      [3]
      S.L. Wu, D.J. Wang, and L. Li, Technological innovation of the contemporary large-scale sintering, Iron Steel, 47(2012), No. 9, p. 1.
      [4]
      N.V.Y. Scarlett, M.I. Pownceby, I.C. Madsen, and A.N. Christensen, Reaction sequences in the formation of silico-ferrites of calcium and aluminum in iron ore sinter, Metall. Mater. Trans. B, 35(2004), No. 5, p. 929.
      [5]
      F. Patisson, J.P. Bellot, D. Ablitzer, E. Marlière, C. Dulcy, and J.M. Steiler, Mathematical modeling of iron ore sintering process, Ironmaking Steelmaking, 18(1991), No. 2, p. 89.
      [6]
      L.H. Hsieh and J.A. Whiteman, Sintering conditions for simulating the formation of mineral phases in industrial iron ore sinter, ISIJ Int., 29(1989), No. 1, p. 24.
      [7]
      R.R. Lovel, K.R. Vining, and M. Dell'amico, The influence of fuel reactivity on iron ore sintering, ISIJ Int., 49(2009), No. 2, p. 195.
      [8]
      M.I. Pownceby and J.M.F. Clout, Phase relations in the Fe-rich part of the system Fe2O3-(Fe3O4)-CaO-SiO2 at 1240-1300℃ and oxygen partial pressure of 5×10-3 atm:implications for iron ore sinter, Miner. Process. Extr. Metall., 109(2000), No. 1, p. 36.
      [9]
      Y.P. Zhang, J.L. Zhang, C. Zhang, Y.Z. Wang, Z.J. Liu, G.W. Wang, and Z.X. Zhao, Modelling and visual verification of combustion zone transfer in ultra-thick bed sintering process, Ironmaking Steelmaking, 44(2016), No. 4, p. 1.
      [10]
      C.E. Loo and R.D. Dukino, Laboratory iron ore sintering studies. 1. Process simulation and airflow rate, Miner. Process. Extr. Metall., 123(2014), No. 4, p. 191.
      [11]
      C.E. Loo and R.D. Dukino, Laboratory iron ore sintering studies. 2. Quantifying flame front properties, Miner. Process. Extr. Metall., 123(2014), No. 4, p. 197.
      [12]
      C.E. Loo and R.D. Dukino, Laboratory iron ore sintering studies. 3. Critical heat transfer period, Miner. Process. Extr. Metall., 123(2014), No. 4, p. 204.
      [13]
      A.S. Parker and H.C. Hottel, Combustion rate of carbon:Study of gas-film structure by microsampling, Ind. Eng. Chem., 28(1936), No. 11, p. 1334.
      [14]
      K.I. Ohno, K. Noda, K. Nishioka, T. Maeda, and M. Shimizu, Effect of coke combustion rate equation on numerical simulation of temperature distribution in iron ore sintering process, ISIJ Int., 53(2013), No. 9, p. 1642.
      [15]
      R.W. Young, Dynamic mathematical model of sintering process, Ironmaking Steelmaking, 4(1977), No. 5, p. 321.
      [16]
      W. Yang, C. Ryu, S. Choi, E. Choi, D. Lee, and W. Huh, Modeling of combustion and heat transfer in an iron ore sintering bed with considerations of multiple solid phases, ISIJ Int., 44(2004), No. 3, p. 492.
      [17]
      J.A. de Castro, N. Nath, A.B. Franca, V.S. Guilherme, and Y. Sasaki, Analysis by multiphase multicomponent model of iron ore sintering based on alternative steelworks gaseous fuels, Ironmaking Steelmaking, 39(2012), No. 8, p. 605.
      [18]
      B.K. Giri and G.G. Roy, Mathematical modelling of iron ore sintering process using genetic algorithm, Ironmaking Steelmaking, 39(2012), No. 1, p. 59.
      [19]
      J. Mitterlehner, G. Löffler, F. Winter, H. Hofbauer, H. Schmid, E. Zwittag, T.H. Buergler, O. Pammer, and H. Stiasny, Modeling and simulation of heat front propagation in the iron ore sintering process, ISIJ Int., 44(2004), No. 1, p. 11.
      [20]
      M.V. Ramos, E. Kasai, J. Kano, and T. Nakamura, Numerical simulation model of the iron ore sintering process directly describing the agglomeration phenomenon of granules in the packed bed, ISIJ Int., 40(2000), No. 5, p. 448.
      [21]
      P.A. Cundall and O.D.L. Strack, A discrete numerical model for granular assemblies, Géotechnique, 29(1979), No. 1, p. 47.
      [22]
      M.K. Choudhary and B. Nandy, Effect of flame front speed on sinter structure of high alumina iron ores, ISIJ Int., 46(2006), No. 4, p. 611.
      [23]
      P. Hou, S. Choi, E. Choi, and H. Kang, Improved distribution of fuel particles in iron ore sintering process, Ironmaking Steelmaking, 38(2011), No. 5, p. 379.
      [24]
      G.S. Feng, S.L. Wu, and Z.J. Zhao. Research on improving hot permeability of deep bed sintering, Sintering Pelletizing, 36(2011), No. 1, p. 1.
      [25]
      W. Yang, S. Choi, E.S. Choi, D.W. Ri, and S. Kim, Combustion characteristics in an iron ore sintering bed-evaluation of fuel substitution, Combust. Flame, 145(2006), No. 3, p. 447.
      [26]
      T. Kawaguchi, S. Sato, and K. Takata, Development and application of an integrated simulation model for iron ore sintering, Tetsu-to-Hagane, 73(1987), No. 4, p. 1940.
      [27]
      N.V.Y. Scarlett, I.C. Madsen, M.I. Pownceby, and A.N. Christensen, In situ X-ray diffraction analysis of iron ore sinter phases, J. Appl. Crystallogr., 37(2004), No. 3, p. 362.
      [28]
      N. Taguchi, T. Otomo, and K. Tasaka, Effect of SiO2 and Al2O3 additions on the reduction and resultant expansion of synthetic materials in the vicinity of CaO·2Fe2O3 composition, Tetsu-to-Hagane, 73(1987), No. 15, p. 1885.
      [29]
      Y.H. Yang and N. Standish, Fundamental mechanisms of pore formation in iron ore sinter and pellets, ISIJ Int., 31(1991), No. 5, p. 468.
      [30]
      I. Shigaki, M. Sawada, and N. Gennai, Increase in low-temperature reduction degradation of iron ore sinter due to hematite alumina solid solution and columnar calcium ferrite, ISIJ Int., 26(1986), No. 6, p. 503.
      [31]
      I. Shigaki, M. Sawada, M. Maekawa, and K. Narita, Fundamental study of size degradation mechanism of agglomerates during reduction, ISIJ Int., 22(1982), No. 11, p. 838.
      [32]
      M. Asada, M. Shima, and Y. Omori, Measurement of macro strain in the course of reduction of the skeletal hematite in sinter, Tetsu-to-Hagane, 73(1987), No. 15, p. 1901.
      [33]
      L.H. Hsieh and J.A. Whiteman, Effect of raw material composition on the mineral phases in lime-fluxed iron ore sinter, ISIJ Int., 33(1993), No. 4, p. 462.
      [34]
      F. Matsuno and T. Harada, Changes of mineral phases during the sintering of iron ore-lime stone systems, ISIJ Int., 21(1981), No. 5, p. 318.
      [35]
      N.A.S. Webster, M.I. Pownceby, I.C. Madsen, and J.A. Kimpton, Effect of oxygen partial pressure on the formation mechanisms of complex Ca-rich ferrites, ISIJ Int., 53(2013), No. 5, p. 774.
      [36]
      N.A.S. Webster, M.I. Pownceby, and I.C. Madsen, In situ X-ray diffraction investigation of the formation mechanisms of silico-ferrite of calcium and aluminium-I-type (SFCA-I-type) complex calcium ferrites, ISIJ Int., 53(2013), No. 8, p. 1334.
      [37]
      N.A.S. Webster, M.I. Pownceby, I.C. Madsen, and J.A. Kimpton, Silico-ferrite of calcium and aluminum (SFCA) iron ore sinter bonding phases:new insights into their formation during heating and cooling, Metall. Mater. Trans. B, 43(2012), No. 6, p. 1344.
      [38]
      C.E. Loo and W. Leung, Factors influencing the bonding phase structure of iron ore sinters, ISIJ Int., 43(2003), No. 9, p. 1393.
      [39]
      M.K. Choudhary, Evolution of sinter structure along bed height of quenched test pot, ISIJ Int., 47(2007), No. 3, p. 516.
      [40]
      N.A.S. Webster, M.I. Pownceby, I.C. Madsen, A.J. Studer, J.R. Manuel, and J.A. Kimpton, Fundamentals of silico-ferrite of calcium and aluminum (SFCA) and SFCA-I iron ore sinter bonding phase formation:effects of CaO:SiO2 ratio, Metall. Mater. Trans. B, 45(2014), No. 6, p. 2097.
      [41]
      X. Ding and X.M. Guo, The formation process of silico-ferrite of calcium (SFC) from binary calcium ferrite, Metall. Mater. Trans. B, 45(2014), No. 4, p. 1221.
      • Relative Articles
      Cited By

    Catalog


    • /

      返回文章
      返回

      版权所有 ©《矿物冶金与材料学报（英文）》编辑部

      地址：北京市海淀区学院路30号邮政编码：100083

      电子邮箱：journal@ustb.edu.cn电话：+86-10-62332875

      本系统由 北京仁和汇智信息技术有限公司 开发    百度统计