Mechanical Analysis And Calculation Of The Large Rotary Kiln

Low taste of mineral resource will be an important source of future smelting raw materials. However, dressing such resource is very difficult and high energy consumption, which requires large-scale equipment. Metallurgy rotary kiln operates in high temperature and corrosive environment, resulting the mechanical behavior of rotary kiln is very complex. And thus to study the mechanical behaviors and master the relationships between force and distortion rule of rotary kiln is very important in engineering science.The main design parameters and3D geometric modeling of the large-scale rotary kiln which can handle1.2million tons ore per year have been done, including the distribution of the rotary kiln span, cylinder thickness distribution, and rectangular rolling circle cross-session parameters. Under the guidance of the beam theory, the completion of the load calculation of the rotary kiln, including the cylinder load calculation, the moment at each bearing, and the support reaction force calculation.This paper take a bold attempt to apply thin shell theory to solve stress-strain of the rotary kiln, depth derived the displacement function of rotary kiln of the load under the non-simply supported edges, and given a reasonable boundary conditions for16unknowns in solving the displacement function, these boundary conditions including surface pull pressure, surface torque, surface moment and surface shear, and finally export the stress-strain analytical solution of rotary kiln under the uniformly distributed load. ABAQUS simulation results show that the stress and strain is reasonable.Lateral stiffness and vertical flexibility affect the operational efficiency of the rotary kiln. When the stiffness is low will cause firebrick off. And cause additional bending stress when lack of the flexibility. Using shell theory to solve the stress and strain of the large scale rotary kiln is a very valuable attempt. Such attempt break the assumption of one-dimensional beam model, and take the problem back to the three-dimensional level. Through theory get the hoop stress and deformation, and axial stress and deformation. This has very important practical significance for optimization of the lateral stiffness and vertical flexibility of the rotary kiln.