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针对高炉风口容易损坏的部位,用数值模拟方法来模拟高炉风口的流场和温度场,得到流场与温度场的关系。结果表明,当进口水速为8m/s时,冷却效果最好;进口速度继续提高对冷却效果影响不明显,反而使压力损失急速增加。当冷却水中杂质含量较多时,会形成一层类似绝热层的水垢,水垢对风口温度的影响较大。模拟发现,当水垢的厚度达到0.4mm时,风口的温度超过了纯铜风口的许用温度,风口易损坏。
Aiming at the easily damaged parts of blast furnace tuyere, numerical simulation method was used to simulate the flow field and temperature field of blast furnace tuyere, and the relationship between flow field and temperature field was obtained. The results show that when the inlet water velocity is 8m / s, the cooling effect is the best; while the further increase of the inlet velocity has no obvious effect on the cooling effect, but the pressure loss rapidly increases. When the cooling water impurities more, it will form a layer of similar insulation scale, scale on the tuyere temperature greater impact. Simulation found that when the thickness of the scale reaches 0.4mm, the outlet temperature exceeds the allowable temperature of pure copper outlet, the outlet is easy to damage.