东北大学学报:自然科学版 ›› 2015, Vol. 36 ›› Issue (4): 508-512.DOI: 10.12068/j.issn.1005-3026.2015.04.012

• 材料与冶金 • 上一篇    下一篇

DMF铁矿粉在含铬型钒钛混合料烧结中的应用

周密, 杨松陶, 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:2014-03-17 修回日期:2014-03-17 出版日期:2015-04-15 发布日期:2014-11-07
  • 通讯作者: 周密
  • 作者简介:周密(1987-),男,安徽马鞍山人,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); 国家自然科学基金资助项目(51090384,51174051); 科技部重大国际合作项目(2012DFR60210).

Application of DMF Ore for Sintering of Cr-Bearing Vanadium and Titanium Magnetite

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

  1. School of Materials & Metallurgy, Northeastern University, Shenyang 110819, China.
  • Received:2014-03-17 Revised:2014-03-17 Online:2015-04-15 Published:2014-11-07
  • Contact: XUE Xiang-xin
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摘要: 对一种低品位廉价赤铁粉 (DMF粉) 配加在含铬型钒钛混合料中烧结的可行性进行了研究.通过微型烧结装置和熔点测定仪对DMF粉的液相流动性和溶化特性进行了分析.结果表明,DMF粉液相流动性好,液相开始生成温度ts及有效液相终止温度t f较低,溶化区间t较宽,溶化时间τm充分,安全液相量的生成速度较小(0.125mm/min),可弥补含铬型钒钛烧结矿液相量的不足,实现优化配矿.烧结杯实验结果表明,配加10%DMF粉的含铬型钒钛烧结矿各项指标均较好,且有利于高炉的稳定顺行.

关键词: 含铬型钒钛矿, 优化配矿, 高炉, 烧结, 溶化特性

Abstract: Low grade and cheap hematite ore (DMF) was researched for sintering of Cr-bearing vanadium and titanium magnetite (V-Ti-Cr) via sessile drop measuring setup, miniature sintering setup and sintering pot tests. The results showed that DMF has a good fluidity with a wide melting range, a long melting time, and the beginning and ending temperature that liquid generated are low along with a small value of security liquid velocity (0.125mm/min). Therefore, DMF can be used as a matching ore in V-Ti-Cr mixture to make up the disadvantage that V-Ti-Cr sinter owns an insufficient liquid content. Sinter pot tests showed that the optimal additive ratio of DMF is 10%, which is helpful to stabilize the blast furnace operation.

Key words: Cr-bearing vanadium and titanium magnetite, optimization of matching ores, blast furnace, sinter, melting characteristics

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