东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2013, Vol. 34 ›› Issue (4): 545-549.DOI: -

• 材料与冶金 • 上一篇    下一篇

以高铬型钒钛磁铁矿制备氧化球团

唐珏，张勇，储满生，薛向欣   

  1. (东北大学材料与冶金学院，辽宁沈阳110819)
  • 收稿日期:2012-01-20 修回日期:2012-01-20 出版日期:2013-04-15 发布日期:2013-06-19
  • 通讯作者: 唐珏
  • 作者简介:唐珏(1988-)，女，湖南永州人，东北大学博士研究生；储满生(1973-)，男，安徽岳西人，东北大学教授，博士生导师；薛向欣(1954-)，男，河北唐山人，东北大学教授，博士生导师.
  • 基金资助:
    国家自然科学重大基金资助项目(51090384)；国家高技术研究发展计划项目(2012AA062302，2012AA062304)；中央高校基本科研业务费专项资金资助项目(N110202001).

Preparation of Oxidized Pellets with High Chromium VanadiumTitanium Magnetite

TANG Jue， ZHANG Yong， CHU Mansheng， XUE Xiangxin   

  1. School of Materials ＆ Metallurgy， Northeastern University， Shenyang 110819， China.
  • Received:2012-01-20 Revised:2012-01-20 Online:2013-04-15 Published:2013-06-19
  • Contact: CHU Mansheng
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摘要： 研究了高铬型钒钛磁铁矿的基础特性，在此基础上考察了该矿对氧化球团制备工艺和冶金性能的影响规律，探索了获得优质氧化球团的高铬型钒钛磁铁矿的最大质量分数.结果表明:高铬型钒钛磁铁矿主要由磁铁矿、镁铁矿、铬铁矿、镁钛矿、钒磁铁矿、钛磁铁矿等组成，其粒度粗，连晶强度较差；随球团原料中高铬型钒钛磁铁矿质量分数的增加，生球性能无显著变化，成品球团抗压强度降低，当其质量分数高于20%时，不能满足高炉生产要求.增大高铬型钒钛磁铁矿的质量分数有助于降低球团矿的还原膨胀率，当其质量分数由0增加到20%时，球团的还原膨胀率由321%降低到211%.

关键词: 高铬型钒钛磁铁矿, 基础特性, 氧化球团, 抗压强度, 还原膨胀

Abstract: The effects of the high chromium vanadiumtitanium magnetite ores on the oxidized pellet preparation process and metallurgy properties were investigated and its largest mass fraction for superior quality of the oxidized pellets was also explored according to the research on fundamental characteristics of the ores. The results showed that the high chromium vanadiumtitanium magnetite mainly composed of magnetite， magnesioferrite， chromite， geikielite， coulsonite and titanomagnetite etc.， of which the particle size was large， and crystal stock strength was low. With the increase of the mass fraction of high chromium vanadiumtitanium magnetite in the raw materials of the pellets， the properties of green pellets had no significant changes， but the compressive strength of the finished oxidized pellets decreased， when the mass fraction of the ores was greater than 20%， the compressive strength couldn’t meet the requirement of the blast furnace production. On the other hand， increasing the mass fraction of high chromium vanadiumtitanium magnetite was conducive to reduce the reduction swelling rate of the pellets. When its mass fraction increased from 0 to 20%， the reduction swelling rate decreased from 321% to 211% accordingly.

Key words: high chromium vanadiumtitanium magnetite, fundamental characteristics, oxidized pellets, compressive strength, reduction swelling rate

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