东北大学学报:自然科学版 ›› 2015, Vol. 36 ›› Issue (4): 498-502.DOI: 10.12068/j.issn.1005-3026.2015.04.010

• 材料与冶金 • 上一篇    下一篇

基础特性对含铬型钒钛烧结矿粉化性能的影响

杨松陶, 周密, 姜涛, 薛向欣   

  1. (东北大学 材料与冶金学院, 辽宁 沈阳110819)
  • 收稿日期:2014-05-16 修回日期:2014-05-16 出版日期:2015-04-15 发布日期:2014-11-07
  • 通讯作者: 杨松陶
  • 作者简介:杨松陶(1984-),男,重庆人,东北大学博士研究生; 姜涛(1973-),男,辽宁本溪人,东北大学教授,博士生导师; 薛向欣(1954-),男,辽宁沈阳人,东北大学教授,博士生导师.
  • 基金资助:
    国家高技术研究发展计划项目(2012AA062302,2012AA062304); 国家自然科学基金重大项目(51090384); 中央高校基本科研业务费专项资金资助项目(N110202001); 科技部重大国际合作项目(2012DFR60210).

Effect of Sintering Basic Characteristics on Reduction Degradation Index for Cr-Bearing Vanadium and Titanium Magnetite

YANG Song-tao, ZHOU Mi, JIANG Tao, XUE Xiang-xin   

  1. School of Materials & Metallurgy, Northeastern University, Shenyang 110819, China.
  • Received:2014-05-16 Revised:2014-05-16 Online:2015-04-15 Published:2014-11-07
  • Contact: XUE Xiang-xin
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摘要: 承德地区含铬型钒钛烧结矿的黏结相不充分、强度差、低温还原粉化指数低,严重影响烧结矿的质量.研究了4种不同成分的含铬型钒钛磁铁精矿粉的烧结基础特性:连晶强度、黏结相强度、液相流动性、同化温度,并与4种铁精矿粉的单烧实验结果进行比较分析,探究含铬型钒钛磁铁精矿粉基础特性对烧结矿低温还原粉化指数RDI+3.15的影响规律.结果表明:含铬型钒钛磁铁烧结矿的RDI+3.15随铁精矿粉同化温度的上升而降低,随黏结相强度的上升而升高,液相流动性和连晶强度对其影响很小.

关键词: 含铬型钒钛磁铁矿, 烧结矿, 基础特性, 低温还原粉化指数, 优化配矿

Abstract: The content of binding phase in Cr-bearing vanadium and titanium magnetite is insufficient, which makes the sintering strength and low temperature reduction degradation index (RDI) bad. The sintering basic characteristics, i.e., crystal intensity, self-intensity of adhere phase, fluidity of liquid phase, assimilation temperature, were studied in four kinds of Cr-bearing vanadium and titanium magnetites, which were compared with the single burning test results of four kinds of iron ore concentrate, to explore the effect of the sintering basic characteristics on RDI+3.15. The results showed that the RDI+3.15 of sinter decreases with increasing the assimilation temperature, and increases with increasing the strength of binding phase, but the fluidity of liquid phase and crystal intensity have little influence on it.

Key words: Cr-bearing vanadium and titanium magnetite, sinter, basic characteristics, RDI(reduction degradation index); optimization ore matching

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