TO DETERMINATION OF SPEED AND TRACTION OF PARTICLE MOVEMENT IN THE HEAT FLOW

Abstract

The article presents experimental data on the basis of which a mathematical model of particle motion in a vortex layer during heat treatment is created, taking into account changes in their sizes. The peculiarities of particle motion in the vortex apparatus are determined in the work. There is also a dependence that allows you to control the duration of heat treatment. Based on the results of research and modeling, you can design a device for drying dispersed particles.
 The current level of development of vortex devices stimulates the relevance of research aimed at a deeper study of heat treatment processes, improving the design of devices and manufacturing technology of individual components. The lack of a strict modern theory is particularly acute in the design of systems and devices in which the vortex apparatus is one of the important units. In this regard, the priority today is to develop a theory that will provide a fairly reliable mathematical description of the processes occurring in the vortex chamber of the device.
 In many fields of technology use different mass transfer devices for drying granular material for various purposes. In general, the methods of designing such devices are known, and if the technological process is implemented without any features, the calculation methods justify themselves. In cases where the properties of the material in the heat treatment process change, traditional calculation methods give significant errors. Then there is a need for mathematical modeling of basic technological processes.
 In the hydrodynamics of the apparatus presented in the work, and accordingly in the processing, it is necessary to distinguish two main stages: pre-drying of particles in a flat jet of coolant and the final heat treatment in the vortex layer. In this paper, we dwelled in more detail on the first stage of technology.
 The equations presented in this paper reflect the features of heat treatment of particles in the vortex apparatus taking into account their variable sizes and can complement the existing methods of designing such installations.
 The equations obtained in this way reflect the above-mentioned features of heat treatment of particles in a vortex apparatus taking into account their variable sizes and can supplement the existing methods of designing such installations.