| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Steels in Extreme Environments
|
| Presentation Title |
Research on Failure of Offline Cooling Staves in 5500 m3 Blast Furnace |
| Author(s) |
Zefei Zhang, Yanbo Chen, Jianlong Wu, Kexin Jiao, Songjian Shan, Long Chen, Kunpeng Huang, Hongwei Li, Yong Zhang, Jian Sun |
| On-Site Speaker (Planned) |
Zefei Zhang |
| Abstract Scope |
The cooling stave faces extreme environments such as high temperature, high pressure, and wear, and its lifetime directly affects the stability of the blast furnace. Through the research of 141 offline cooling staves in the 5500 m3 blast furnace, the damage mode and failure mechanism of cooling stave were analyzed and suggestions were proposed for the longevity of the cooling staves. Statistics and analysis were conducted from the perspectives of lifetime, morphology, thickness and deflection. The damage to the cooling stave presents a concentrated and longitudinally connected characteristic. It was found that the failure of cooling staves is mainly caused by the combined effects of wear and high-temperature stress corrosion, and especially when the water channels are damaged and the cooling is insufficient, the cooling staves will accelerate damage. The protective refractory materials on surface can effectively delay the failure of cooling staves. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Temperature Materials, Other, Other |