含钒页岩实验回转窑焙烧过程数值模拟

Numerical simulation of roasting process of coal stone in experimental rotary kiln

通过采用CFX软件,以实验回转窑内的气相场、颗粒相为研究对象,建立含钒页岩实验回转窑内焙烧过程的数值模拟模型,获得在正常的操作状态下窑内烟气温度场、流场、组分场、颗粒的运动轨迹的分布情况.计算结果显示,该窑内形成两个相对高温区,在焙烧带窑内的烟气及颗粒的运动速度增大,能较准确地反应窑内的焙烧过程,对研究开发高效的含钒页岩复合焙烧专用回转窑具有重要意义.

The gas and the particles in experimental rotary kiln were studied.A mathematical model of the roasting process in coal stone experimental rotary kiln was established by using CFX.In the normal operating state;the distribution of temperature field,flow field,the component field,and the particle trajectory in the rotary kiln is obtained.The computation results indicate that the rotary kiln forms two relatively high-temperature zones.The speeds of the gas and the particles will be increased in the roasting process.The results can reflect the roasting process in the rotary kiln more accurately.The numerical simulation is important to research the efficient vanadium extraction kiln.