东北大学学报:自然科学版 ›› 2014, Vol. 35 ›› Issue (8): 1160-1163.DOI: 10.12068/j.issn.1005-3026.2014.08.022

• 材料与冶金 • 上一篇    下一篇

含钛物料中护炉有效钛含量的控制模型

焦克新1,2,张建良1,2,左海滨1,2,刘征建1,2   

  1. (1 北京科技大学 冶金与生态工程学院, 北京100083; 2 北京科技大学 钢铁冶金新技术国家重点实验室, 北京100083)
  • 收稿日期:2013-08-02 修回日期:2013-08-02 出版日期:2014-08-15 发布日期:2014-04-11
  • 通讯作者: 焦克新
  • 作者简介:焦克新(1988-),男,河南信阳人,北京科技大学博士研究生;张建良(1965-),男,天津人,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(51304014).

Control Model of Effective Ti Content for Hearth Protection by TitaniumBearing Material

JIAO Kexin1,2, ZHANG Jianliang1,2, ZUO Haibin1,2, LIU Zhengjian1,2   

  1. 1 School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China; 2 State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, China.
  • Received:2013-08-02 Revised:2013-08-02 Online:2014-08-15 Published:2014-04-11
  • Contact: ZUO Haibin
  • About author:-
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摘要: 研究了含钛炉料在高炉炉缸内的还原行为及其对炉缸的保护机制,在此基础上建立了渣铁中有效钛含量的控制模型.根据高炉的实际生产参数实时计算炉渣中的有效TiO2含量、铁水中TiC析出的临界Ti含量及对应的析出温度,从而指导生产实践,为护炉过程参数的选取提供理论依据.在文中给定的生产参数条件下,计算出炉渣中有效TiO2含量(质量分数)应控制在08%~10%,能达到护炉效果的铁水中Ti含量(质量分数)应控制在011%~014%,并分析了铁水成分对TiC析出的影响.

关键词: 高炉, 炉缸保护, TiO2活度, Ti(C, N), 有效钛含量, 控制模型

Abstract: The titaniumbearing material reduction behavior and the protection mechanism for a hearth were analyzed, based on which, the control model of the effective Ti content was established. The effective TiO2 content, critical Ti content with which TiC precipitated and the corresponding precipitation temperature could be calculated by the model according to the realtime parameters of the BF in the actual production in order to guide the production practice. Given the production parameters, the calculated results showed that the effective TiO2 content should be 08 wt%-10 wt%, and the Ti content in molten iron, in which the hearth could be effectively protected, should be 011 wt%-014 wt%. Furthermore, the influence of hot metal ingredients on the precipitation of TiC was analyzed.

Key words: blast furnace, hearth protection, TiO2 activity, Ti(C, N), effective Ti content, control model

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