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 (9): 1277-1281.DOI: -

• 材料与冶金 • 上一篇    下一篇

褐铁矿的热分解特性及其对烧结过程的影响

潘文1，吴铿1，王文泽1，赵勇1,2   

  1. (1北京科技大学钢铁冶金新技术国家重点实验室，北京100083；2首钢技术研究院，北京100041)
  • 收稿日期:2013-04-01 修回日期:2013-04-01 出版日期:2013-09-15 发布日期:2013-04-22
  • 通讯作者: 潘文
  • 作者简介:潘文(1978-)，男，江苏镇江人，北京科技大学博士研究生；吴铿(1951-)，男，辽宁鞍山人，北京科技大学教授，博士生导师.
  • 基金资助:
    国家自然科学基金资助项目(51274026)；国家高技术研究发展计划项目(2009AA06Z105).

Thermal Decomposition Characteristics of Limonite and Their Influences on the Sintering Process

PAN Wen1， WU Keng1， WANG Wenze1， ZHAO Yong1,2   

  1. 1. State Key Laboratory of Advanced Metallurgy， University of Science and Technology Beijing， Beijing 100083， China; 2. Shougang Research Institute of Technology， Beijing 100041， China.
  • Received:2013-04-01 Revised:2013-04-01 Online:2013-09-15 Published:2013-04-22
  • Contact: WU Keng
  • About author:-
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摘要： 利用热重分析的方法对褐铁矿FMG粉(简称FMGF)在受热升温过程的热分解特性进行了详细的研究.结果表明:FMGF中的结晶水在200~400℃温度区间内即完成了分解挥发，这样可以改善烧结料层透气性，使料层上部热量有效传递到下部；分解其中的结晶水，就能减少褐铁矿中的结晶水分解对烧结固体燃料消耗和烧结热平衡影响.烧结杯试验和工业应用结果验证了热分解特性研究的结论:在高比例褐铁矿条件下，通过提高难熔矿配比，可改善烧结料层透气性，改善料层传热条件，最终降低烧结固体燃耗，提高烧结成品率.

关键词: 烧结, 褐铁矿, 热分解特性, 固体燃耗, 利用系数

Abstract: The thermal decomposition characteristics of FMGF were investigated by the thermolgravimetric analysis. The experimental investigation showed that the decomposition of crystal water in FMGF completed when the temperatures were in the range of 200~400℃， which improved the gas permeability of the sintering layers that the heat from upper layers transferred to the lower layers effectively. The crystal water was decomposed so that the effects of crystal water decomposition in the FMGF on the solid fuel consumption and energy balance were reduced. The conclusion made from the thermal decomposition analysis was verified by the sintering pot tests and industrial application， which indicated that the rate of finial products of the sintering was increased and the solid fuel consumption was reduced under high proportion of limonite through increasing the proportion of iron ore fines with low assimilative capacity to improve the gas permeability of the sintering layers and the heat transfer.

Key words: sinter, limonite, thermal decomposition characteristics, solid fuel consumption, utilization coefficient

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