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›› 2012, Vol. 12 ›› Issue (5): 816-821.

• 过程与工艺 • 上一篇    下一篇

高铁赤泥直接还原制备珠铁

王洪 佘雪峰 赵晴晴 薛庆国 王静松   

  1. 北京科技大学冶金与生态工程学院, 北京科技大学冶金与生态工程学院, 北京科技大学钢铁冶金新技术国家重点实验室 北京科技大学钢铁冶金新技术国家重点实验室 北京科技大学冶金与生态工程学院,
  • 收稿日期:2012-11-01 修回日期:1900-01-01 出版日期:2012-10-20 发布日期:2012-10-20
  • 通讯作者: 王静松

Production of Iron Nuggets Using Iron-rich Red Mud by Direct Reduction

WANG Hong SHE Xue-feng ZHAO Qing-qing XUE Qing-guo WANG Jing-song   

  1. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing State Key Laboratory of Advanced Metallurgy, School of Metallurgical and Ecological Engineering, University of Science and Technology Beijin State Key Laboratory of Advanced Metallurgy, School of Metallurgical and Ecological Engineering, University of Science and Technology Beijin School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing
  • Received:2012-11-01 Revised:1900-01-01 Online:2012-10-20 Published:2012-10-20
  • Contact: WANG Jing-song

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被引次数

23

摘要： 以高铁赤泥、煤粉为主要原料制成含碳球团，通过高温直接还原熔分工艺制备珠铁，考察了温度、碳氧比、氟化钙含量对还原和熔分的影响，并对不同温度下的实验结果进行了动力学分析. 结果表明，温度和氟化钙含量为球团还原熔分的关键影响因素，在1400℃、碳氧比为1.2、氟化钙含量为2%时加热14 min渣铁实现较好分离，所得珠铁中碳、硫含量分别为2.72%(w)和0.48%(w). 动力学分析表明，高铁赤泥直接还原由碳的气化和气相扩散混合控速. 所得珠铁可作为一种炼钢原料，熔分渣是一种优质的提钪原料.

关键词: 含碳球团, 直接还原, 高铁红泥, 珠铁

Abstract: The experiments were conducted to study the production of iron nuggets with iron-rich red mud by direct reduction and melting, and the impacts of temperature, C/O and CaF2 content on the reduction and melting investigated. And kinetic analysis of the experimental results obtained at different temperatures was carried out. The results showed that temperature and CaF2 content were critical influential factors on the reduction and melting. Iron nuggets and slag can be separated well under the conditions of 1400℃, C/O=1.2, 2% CaF2 addition and 14 min heating time. The carbon and sulfur contents of nuggets were 2.72% and 0.48%. The kinetic analysis result showed that carbon gasification and gas diffusion were both the rate-controlling steps for the reduction of iron-rich red mud. The obtained iron nuggets were a kind of steelmaking feed, and the slag could be used to extract scandium.

Key words: carbon-containing pellet, direct reduction, iron-rich red mud, iron nugget

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