Mathematical model of adjusting blast volume of blast furnace tuyeres

作者：Li Yang Long^*; Cheng Shu Sen; Chen Chuan

来源：Journal of Northeastern University, 2016, 37(3): 357-362.

DOI：10.3969/j.issn.1005-3026.2016.03.012

• Blast kinetics
• Flow resistance
• Hearth
• Tuyeres

A mathematical model of adjusting blast parameters of tuyere was built and the formula of tuyere flow resistance was proposed. Based on a domestic 5500 m3BF, the blast volume, velocity and kinetic energy of each tuyere were analyzed, respectively, when the lengths or areas of tuyeres were adjusted at the condition of constant total blast volume. The results showed that the flow resistance of adjusted tuyeres increases with increasing their lengths and decreasing their areas. Therefore, increasing the length of adjusted tuyeres can decrease their blast volume, velocity and kinetic energy. The blast volume of adjusted tuyeres can be also reduced by decreasing their areas. The blast velocity and kinetic energy of adjusted tuyeres can be enhanced when the areas of multiple tuyeres were decreased. What's more, the formula of critical adjusted tuyere number is put forward. This model can help to master the variation regulations of blast parameters and adjust the parameters of tuyeres quantitatively, which is benefit for stable and smooth work.

• 出版日期2016
• 单位北京科技大学