【摘要】 煤气流影响高炉炉料及渣铁运动的基本力学因素不是热风(煤气)压强的绝对值或总压差,而是压强梯度矢量场的性质。压强梯度是作用于炉料及渣铁的一种体积力,本文通过理论推导和试验对此加以论证;并证明局部压强梯度超过炉料容积重量是炉内发生悬料的力学条件;对成渣带、风口循环区附近和渣铁滴落带的液相行为作了分析。此外,压强梯度是描述流速场和压强场,建立高炉散料流体力学模型的重要杠杆,而流体力学模型又是传热和传质模型的基础,从本研究得出指导生产的重要结论。更多还原

【Abstract】 Magnitude and direction of gas pressure gradient, i. e. pressure gradient field in the blast furnace has been proved theoretically and experimentally to be the fundamental aerodynamic factor for the descent or movement of granular solid beds and liquid droplets of iron and slag. Mechanism or mechanics of hanging in the furnace has also been analyzed.Importance of pressure gradient field for describing gas stream field in it was shown. On this basis we can further investigate the heat transfer and mass transfer processes mathematically and finally find out a reasonable model for the whole blast furnace process. Some very useful instructions for blast furnace operation were derived from this investigation.更多还原