ABSTRACT

With the development of a large-scale blast furnace, hearth activity has an important impact on the longevity and efficiency. Based on the analysis of practical example of ShaSteel No. 3 blast furnace, the new hearth activity model was proposed and verified, namely, the slag-iron flow resistance coefficient. Besides, in the model, the prediction of the coke particle size in the hearth was used to predict the hearth activity. Furthermore, the slag-iron properties and coke properties were analysed to the influence degree on the resistance coefficient. The model has been applied to the hearth of ShaSteel No. 3 blast furnace, and it can timely respond to the internal state of hearth. Finally, the methods to activate hearth activity were explained, which not only has application value but also provides theoretical support for the evaluation of hearth activity in actual production.

摘要

随着大型高炉的发展，炉床活动对高炉寿命和效率有重要影响。在对沙钢3号高炉实例分析的基础上，提出并验证了新的炉缸活动模型，即渣铁流动阻力系数。此外，在该模型中，炉膛中焦炭粒度的预测用于预测炉膛活性。进一步分析了渣铁性能和焦炭性能对阻力系数的影响程度。该模型已应用于沙钢3号高炉炉膛，能及时响应炉膛内部状态。最后，解释了激活炉膛活动的方法，