Composition and formation mechanism of adhesive in blast furnace cooling stave

被引：0
|
作者：
Ma H. [1 ]
Zhang J. [1 ]
Jiao K. [1 ]
Zhou Y. [2 ]
Dan J. [2 ]
机构：
[1] School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing
[2] Hunan Hualing Xiangtan Iron and Steel Co. Ltd., Xiangtan
来源：
Zhongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Central South University (Science and Technology) | 2019年 / 50卷 / 06期
基金：
中国国家自然科学基金;
关键词：
Adhesive; Blast furnace(BF); Cooling stave; Long campaign technology;
D O I：
10.11817/j.issn.1672-7207.2019.06.009
中图分类号：
学科分类号：
摘要：
Based on the damage investigation of No. 3 blast furanc(BF) in Xiangtan Iron and Steel Co., the adhesive of the blast furnace belly, bosh and the lower part of furnace shaft were sampled. Through X-ray diffraction(XRD) and scanning electron microscope-energy dispersive spectrometer (SEM-EDS) analysis, the chemical composition and microstructure of the adhesive at different positions of BF were systematically studied, and the phase composition and formation mechanism of the adhesive were investigated. The results show that the phase composition and deposition behavior of the adhesive at different heights of the BF body are significantly different. The main phase of the adhesive is zinc oxide-C and slag-iron mixture. Combined with the thermodynamic conditions of the deposition behavior of zinc oxide on the hot surface of the cooling stave, analysis is made and it is found that the zinc oxide-C adhesive is frequently collapsed due to zinc oxide reduction, which is not conducive to the longevity of the BF body. The formed slag-iron adhesive can effectively isolate the direct contact between high-temperature materials, gas and cooling stave, delay the erosion of cooling stave, thereby ensure the long campaign of the BF cooling stave. © 2019, Central South University Press. All right reserved.
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页码：1326 / 1333
页数：7
相关论文
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