颗粒物料在回转窑内的运动特性模型

为了研究颗粒物料在回转窑内的运动特性，通过试验方法研究了操作条件（如回转窑转速、倾角、给料速率等）对颗粒物料在回转窑内停留时间等运动特性的影响，利用散体颗粒理论和矢量分析的方法建立了反映颗粒物料在回转窑内的运动特性的颗粒随机轨迹运动模型.该模型引入了在回转窑低填充率（小于10%)条件下给料速率对窑内物料运动特性的影响，可以更准确地预测固体颗粒状物料在回转窑内的平均停留时间.通过与试验数据的对比，证明随机颗粒轨迹模型是一种预测回转窑内颗粒物料运动平均停留时间和平均体积流率的有效工具.

Model of axial transport of particles in rotary kiln

A model of the axial transport of particles in the rotary kiln was built based on analysis and experiments on main factors influencing the mean residence time,hold-up and mean volume flow of particles in the rotary kiln,such as rotational speeds,angles of inclination and feed rates,using the discrete particle theory and vector analysis.The random particle trajectory model(PTM) was proved to be an effective way to predict the axial transport of particles in the rotary kiln.Effects of feed rates on the mean residue time were studied when the holdup was less than 10%.This model is more accurate than existing ones in predicting the mean residence time and mean volume flow of particles in the rotary kiln.