东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2009, Vol. 30 ›› Issue (1): 86-89.DOI: -

• 论著 • 上一篇    下一篇

铁矿石粉矿成分对烧结强度的影响

金明芳;朱道飞;郑忠;沈峰满;   

  1. 东北大学材料与冶金学院;重庆大学材料科学与工程学院;
  • 收稿日期:2013-06-22 修回日期:2013-06-22 出版日期:2009-01-15 发布日期:2013-06-22
  • 通讯作者: Jin, M.-F.
  • 作者简介:-
  • 基金资助:
    教育部博士生访学东北大学项目(28820038)

Effect of composition of powdered iron ore on sinter strength

Jin, Ming-Fang (1); Zhu, Dao-Fei (2); Zheng, Zhong (2); Shen, Feng-Man (1)   

  1. (1) School of Materials and Metallurgy, Northeastern University, Shenyang 110004, China; (2) College of Materials Science and Engineering, Chongqing University, Chongqing 400030, China
  • Received:2013-06-22 Revised:2013-06-22 Online:2009-01-15 Published:2013-06-22
  • Contact: Jin, M.-F.
  • About author:-
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摘要： 在铁矿石烧结过程中,熔体性质决定了烧结矿粘结相的结构.采用小型试验来考察铁矿石粉矿的化学成分(SiO2,Al2O3,MgO和碱度)对烧结强度的影响.并通过化学成分对熔体的黏度和表面张力的影响来对烧结强度的变化加以解释.试验结果表明,随着粉矿中配加CaO与矿石的质量比的变化(0.08~0.15),在CaO与矿石质量比为0.12时获得最大烧结强度;而碱度R=2时获得最大的烧结强度;随着MgO含量的增加其烧结强度逐渐降低;而烧结原料中Al2O3质量分数不宜超过2.5%.

关键词: 铁矿石, 烧结, 化学成分, 强度

Abstract: The structure of the bonding phases of sinter depends on the properties of melts formed during iron ore hematite sintering. A bench-scale test was therefore carried out to investigate the effect of powdered iron ore composition (SiO2, Al2O3, MgO and bacisity) on the sinter strength, of which the change was further explained by the effect of the composition on the viscosity and surface tension of the melt. The results showed that the mass ration of additive CaO to the powdered ore changes in the range from 0.08 to 0.15 and the max compression and rupture strength of sinter are obtained at the ration=0.12 and, with respect to the changing basicity during sintering, the max strengths are obtained at the basicity R=2.0. The strengths decrease gradually with the increasing MgO content in hematite, and it is unfavorable if the Al2O3 content exceeds 2.5wt%.

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