Coke Collapse Model and Collapse Profile Variation Law for Bell-Less Top BF

钢铁研究学报(英文版), 2011, 18(10): 8-12.

Coke Collapse Model and Collapse Profile Variation Law for Bell-Less Top BF

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1.School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China

2.School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China

3.School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China

4.School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China

5.School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China

基金项目: National Natural Science Foundation of China(50974143)

关键词：数学模型 , 无料钟炉顶 , 变化规律 , 高炉 , 折叠 , 可乐 , 最小安全系数 , 技术发展方向

Coke Collapse Model and Collapse Profile Variation Law for Bell-Less Top BF

Keywords： blast furnace , coke layer stability , safety factor , coke collapse , burden profile ,

The mathematical model of minimum safety factor that investigated the collapse trends of coke layer under different charging parameters was established firstly on the basis of the slope stabilization theory in soil mechanics, and then the model of burden profile after coke collapse was improved by adopting the predetermination of quadratic curve and energy correction methods. The research will provide theoretical evidences for describing the coke profile more accurately and technical direction for choosing suitable charging parameters of blast furnace. The results show that： it is helpful to improve the stability of coke layer with increasing chute inclining angle and length of the coke flat; when the main falling point of ore moves toward furnace wall or the coke flat is wider, the curve radian of burden profile after coke collapse becomes smaller; the ore to coke ratio distribution agrees with the gas top temperature measurement well under considering coke collapse comparing with the result of ignoring coke collapse.

参考文献

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Coke Collapse Model and Collapse Profile Variation Law for Bell-Less Top BF

Coke Collapse Model and Collapse Profile Variation Law for Bell-Less Top BF

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