Mechanism Research on Melting Loss of Coppery Tuyere Small Sleeve in Blast Furnace

The tuyere small sleeve in blast furnace works under poor conditions. The abnormal damage of it will severely affect the performance of the blast furnace, thus it should be replaced during the damping down period. So it is of great significance that we study and reduce the burnout of tuyere small sl...

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Bibliographic Details
Published in:High temperature materials and processes 2016-01, Vol.35 (1), p.73-80
Main Authors: Chai, Yi-Fan, Zhang, Jian-Liang, Ning, Xiao-Jun, Wei, Guang-Yun, Chen, Yu-Ting
Format: Article
Language:English
Subjects:
81.05.Bx
Blast furnaces
Circulating
CONSUMPTION
DAMPING PROPERTIES
Fuel consumption
Furnaces
Limescale
Melting
melting loss
metallurgical bonding
Metallurgy
Sleeves
Steel industry
tuyere small sleeve
TUYERES
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Summary:The tuyere small sleeve in blast furnace works under poor conditions. The abnormal damage of it will severely affect the performance of the blast furnace, thus it should be replaced during the damping down period. So it is of great significance that we study and reduce the burnout of tuyere small sleeve. Melting loss is one case of its burnout. This paper studied the reasons of tuyere small sleeve’s melting loss, through computational simulation and microscopic analysis of the melting section. The research shows that the temperature of coppery tuyere small sleeve is well distributed when there is no limescale in the lumen, and the temperature increases with the thickness of limescale. In addition, the interruption of circulating water does great harm to the tuyere small sleeve. The melting loss of tuyere small sleeve is caused by iron-slag erosion, with the occurrence of the melt metallurgical bonding and diffusion metallurgical combination.
ISSN:0334-6455
2191-0324
DOI:10.1515/htmp-2014-0149