东北大学学报（自然科学版）

东北大学学报:自然科学版 ›› 2018, Vol. 39 ›› Issue (9): 1248-1253.DOI: 10.12068/j.issn.1005-3026.2018.09.007

• 材料与冶金 • 上一篇    下一篇

富氧高炉综合模型

郁肖兵， 倪文杰， 邹宗树   

  1. (东北大学 冶金学院， 辽宁 沈阳110819)
  • 收稿日期:2017-05-24 修回日期:2017-05-24 出版日期:2018-09-15 发布日期:2018-09-12
  • 通讯作者: 郁肖兵
  • 作者简介:郁肖兵(1988-)，男，山东宁阳人，东北大学博士研究生； 邹宗树(1958-)，男，山东章丘人，东北大学教授，博士生导师.冯明杰(1971-)， 男， 河南禹州人， 东北大学副教授; 王恩刚(1962-)， 男， 辽宁沈阳人， 东北大学教授，博士生导师.
  • 基金资助:
    国家自然科学基金资助项目(51574064).国家自然科学基金资助项目(51171041).

Integrated Model of Oxygen-Enriched Blast Furnace

YU Xiao-bing， NI Wen-jie， ZOU Zong-shu   

  1. School of Metallurgy， Northeastern University， Shenyang 110819， China.
  • Received:2017-05-24 Revised:2017-05-24 Online:2018-09-15 Published:2018-09-12
  • Contact: ZOU Zong-shu
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摘要： 针对高富氧操作中出现的“上冷下热”问题，考虑高炉正常冶炼所需的必要条件，建立了对高温区和低温区分别计算物料和热量平衡的数学模型，用于研究高炉内热状态随富氧率的变化和相应的对策.本文描述了模型的建立过程，并通过与生产数据的对比证明了模型的有效性.基准算例条件下的计算结果表明:富氧提高1%，炉顶煤气温度下降约14℃;对于富氧率为1.7%的高炉操作，在不采取额外措施时仍能确保高温区和低温区的热量平衡.另外，计算得到的理论最低直接还原度与实际生产直接还原度的差异表明当前高炉冶炼仍具有继续降低燃料比的可能性.

关键词: 高炉, 富氧, 数学模型, 炉顶煤气温度, 软熔带

Abstract: Aiming to solve the problem of “hot lower part and cool upper part” in blast furnace with oxygen enrichment blowing， this work has developed a model considering necessary conditions in practice to calculate the heat balances of both the high- and low-temperature zones respectively. The model is expected to study the variation of thermal state of blast furnace and the possible corresponding countermeasures in oxygen enrichment blowing operation. This paper describes the process of model development and validation through comparing with practical production data. The result under conditions of the base case shows that， when oxygen enrichment ratio increases by 1%， the top gas temperature decreases by 14℃. For the operation with an oxygen enrichment rate of 1.7%， the heat balances of both high-and low-temperature zones can be ensured with no additional countermeasures. Besides， the difference between the theoretical minimum direct reduction degree calculated by this model and the reduction degree acquired in practice proves that there is still some room to further reduce the fuel rate in blast furnace ironmaking.

Key words: blast furnace, oxygen enrichment, mathematical model, top gas temperature, cohesive zone

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