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为了验证各种料层阻力公式对球团竖炉的适用性,选择了杭州钢铁厂竖炉的工艺参数,分别用各公式进行了阻力损失计算。结果表明,几种公式中,以厄贡公式计算得出的从喷火口至烘干床下沿的料层压力分布曲线与实测值较为接近。但仍不能正确反映其压力分布情况。为此,提出了在将厄贡公式用于非等温料层的计算时,应引入修正系数ψ=T喷/T烘对其进行修正;从喷火口至导风墙下沿这一段,宜采用下降移动球团料层空气阻力计算公式。
In order to verify the applicability of various layer resistance formulas to the pellet shaft furnace, the process parameters of the shaft furnace of Hangzhou Iron and Steel Plant were selected, and the resistance losses were calculated by the formulas. The results show that among the several formulas, the pressure distribution curves calculated from the Ogun formula from the spout to the bottom of the drying bed are close to the measured values. But still can not correctly reflect the pressure distribution. Therefore, it is proposed that when using the Egon equation in the calculation of non-isothermal layer, correction factor ψ = T / T should be introduced to correct it. From this point, The formula of calculating the air resistance of moving pellet on moving down.