Analysis of temperature, stress, and displacement distributions of staves for a blast furnace

作者：Ning Xiao jun^*; Cheng Shu sen; Xie Ning qiang

来源：International Journal of Minerals Metallurgy and Materials, 2009, 16(5): 512-516.

DOI：10.1016/s1674-4799(09)60089-3

• blast furnace
• cool stave
• gas temperature
• numerical simulation

The temperature of gas flow inside a blast furnace (BF) changes significantly when the blast furnace is under unstable operations, and the temperature and stress distributions of cooling staves (CS) for BF work the same pattern. The effect of gas temperature on the temperature, stress, and displacement distributions of the cooling stave were analyzed as the gas temperature inside the blast furnace rose from 1000 to 1600 degrees C in 900 s. The results show that both the temperature and temperature gradient of the hot side of CS increase when the gas flow temperature inside BF rises. The temperature gradient of the hot side of CS is greater than that of the other area of CS and it can reach 65 degrees C/mm. In the vertical direction of the hot side of CS, closer to the central part of CS, the stress intensity is greater than that of the other area of the hot side of CS, which causes cracks on the hot side of CS in the vertical direction. As the gas temperature increases, the stress intensity rate near the fixed pin increases and finally reaches 45 MPa/s. Fatigues near the fixed pin and bolts are caused by great stress intensity rate and the area around the pin can be damaged easily. The edge of CS bends toward the cold side and the central part of CS shifts toward the hot surface.

• 出版日期2009-10
• 单位北京科技大学